CN109586618A - A kind of drive system for electrical equipment - Google Patents
A kind of drive system for electrical equipment Download PDFInfo
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- CN109586618A CN109586618A CN201710910613.2A CN201710910613A CN109586618A CN 109586618 A CN109586618 A CN 109586618A CN 201710910613 A CN201710910613 A CN 201710910613A CN 109586618 A CN109586618 A CN 109586618A
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- Prior art keywords
- power cell
- safe torque
- drive system
- high level
- sto
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
- H02P3/06—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter
- H02P3/18—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an ac motor
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- Power Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
Present disclose provides a kind of drive systems for electrical equipment.According to embodiment of the present disclosure, which includes power cell array, and the power cell array includes being used for out of phase multiple power cells.It is configured to respond to receive safe torque cut-off signals at least one power cell in the power cell of at least one phase in the power cell array, disconnects the power supply in corresponding phase, to execute safe torque shutdown operation.According to embodiment of the present disclosure, the safe torque shutdown operation to electrical equipment may be implemented, required security level is provided.
Description
Technical field
Embodiment of the present disclosure is related to electrical equipment actuation techniques, relates more specifically to a kind of power cell and one kind
Drive system for electrical equipment.
Background technique
Damage to person accident is caused due to the accidental activation of electrical equipment in order to prevent, be directed to such as frequency converter,
The products such as motor servo driver propose STO function.The function can prevent driver when such as motor stops still at it
Middle generation torque, so that the motor can become a part of security system.STO function becomes increasingly necessary to now,
Even have the tendency that becoming driving standard feature.
Usually has the function of STO in existing low-voltage driving system.In low-voltage driving system, it is usually provided with two
Either three industrial sidings or printed circuit board trace, they be used to control user by the STO that client child issues
Signal is transferred to power cell, to control the insulated gate transistor IGBT in the power cell, to allow in urgent feelings
Shutdown driving output under condition, so that for example motor device is shut down.Power cell be rectified using power power electronic device,
The high-voltage frequency converter component of filtering, inversion.It generally includes the semiconductor devices arranged according to full bridge structure, such as insulated gate electrode
Transistor (IGBT), STO control signal will be provided to the grid of IGBT, be turned off with controlling IGBT.
And due to safety concerns, it needs to control signal to these STO and be isolated, this is because the STO signal is on the one hand
It is to be triggered by user, and on the other hand the STO signal will be sent to high-pressure area, therefore there are users to touch danger
A possibility that high pressure.In low-voltage driving system, such isolation can be realized by optical coupling mode.
There is also the needs for being directed to STO function in middle pressure drive system.However, not yet proposing in the prior art any
The actuation techniques of medium voltage network appropriate realize STO function.
Summary of the invention
In view of this, present disclose provides a kind of new drive schemes for electrical equipment, to overcome or alleviate such as
Preceding at least part defect existing in the prior art.
According to one aspect of the disclosure, a kind of drive system for electrical equipment is provided.The drive system can be with
It include: power cell array, the power cell array includes being used for out of phase multiple power cells.The power cell battle array
It is configured to respond to receive safe torque at least one power cell in the power cell of at least one phase in column
Cut-off signals disconnect the power supply in corresponding phase, to execute safe torque shutdown operation.
According to one embodiment, at least one power list in the power cell of a phase in the different phases
Member, which can be configured as, executes the safe torque shutdown operation.
According to another embodiment, at least one power list in the power cell of each phase in the different phases
Member, which can be configured as, executes the safe torque shutdown operation.
According to a further embodiment, can wrap for executing at least one power cell described in the safe torque shutdown
It includes: semiconductor devices and communication monitoring module.The communication check module can be configured for leading in monitoring electrical system
Believe the communication data on route, and in response to detecting the information comprising instruction safe torque shutdown in the communication data,
The cut-off signals turned off for safe torque are provided to the semiconductor devices.
According to embodiment of the present disclosure, the safe torque shutdown operation to electrical equipment may be implemented, provide required
Security level.Moreover, can be realized in some embodiments in simple, inexpensive mode.
Detailed description of the invention
By the way that the embodiment in conjunction with shown by attached drawing is described in detail, above-mentioned and other features of the disclosure will
More obvious, identical label indicates the same or similar component in the attached drawing of the disclosure.In the accompanying drawings:
Fig. 1, which is schematically shown, presses driving in the example for electrical equipment in accordance with one embodiment of the present disclosure
The block diagram of system；
Fig. 2 schematically shows press in another example for electrical equipment in accordance with one embodiment of the present disclosure
The block diagram of drive system；
Fig. 3 schematically shows the block diagram of user interface control device in accordance with one embodiment of the present disclosure；
Fig. 4 schematically shows the block diagrams of power cell in accordance with one embodiment of the present disclosure；
Fig. 5 schematically shows the frame of an example communication monitoring modular in accordance with one embodiment of the present disclosure
Figure；
Fig. 6 schematically shows the generation for being used to illustrate STO control signal in accordance with one embodiment of the present disclosure
Timing diagram；
Fig. 7 schematically shows the frame of another example communication monitoring modular in accordance with one embodiment of the present disclosure
Figure；
Fig. 8 schematically shows the frame of another example communication monitoring modular in accordance with one embodiment of the present disclosure
Figure；
Fig. 9 schematically shows the method for handling STO control signal in accordance with one embodiment of the present disclosure
Flow chart；And
Figure 10 schematically shows the flow chart of the method for STO in accordance with one embodiment of the present disclosure.
Specific embodiment
Hereinafter, each illustrative embodiments of the disclosure will be described in detail with reference to the attached drawings.It should be noted that these are attached
What figure and description were related to is merely possible to exemplary preferred embodiment.It can be it should be noted that according to subsequent description, very
It is easy to dream up the replacement embodiment of structures and methods disclosed herein, and can be not depart from the disclosure claimed
These alternate embodiments are used in the case where principle disclosed.
It should be appreciated that providing these illustrative embodiments just for the sake of keeping those skilled in the art more preferable geographical
It solves and then realizes the disclosure, and not limit the scope of the present disclosure in any way.Furthermore in the accompanying drawings, for the mesh of explanation
, optional step, module, module etc. are shown with dotted line frame.
The terms "include", "comprise" and similar terms as used herein are understood to open term, i.e. " packet
Include/including but not limited to ".Term "based" is " being based at least partially on ".Term " one embodiment " expression " at least one reality
Apply example "；Term " another embodiment " expression " at least one other embodiment ".The related definition of other terms will be retouched below
It is provided in stating.
As previously mentioned, in middle pressure drive system, there is also the needs for being directed to STO function.However, in the prior art still
The actuation techniques of any medium voltage network appropriate are not proposed to realize STO function.For this purpose, providing in the disclosure a kind of new
Drive system for power equipment.The drive system may include: power cell array, and the power cell array includes using
In out of phase multiple power cells.At least one of the power cell of at least one phase is used in the power cell array
Power cell is configured to respond to receive safe torque cut-off signals, disconnects the power supply in corresponding phase, to execute peace
Full torque shutdown operation.For the power cell array of drive system, it will will wherein be used for the power of at least one phase in other words
At least one power cell in unit is configured to safe torque shutdown operation be executed, to realize in response to STO signal
STO function.
It should be noted that STO function can be realized using the power cell similar with by the way of low-voltage driving system.
Further, it is also possible to be realized using new power cell.It is understood that compared with low-voltage driving system, middle pressure driving system
The system of system is huger, more complicated, makes to realize that STO needs increased cost in a like fashion.For this purpose, STO function can be with
It is realized using the improved power cell for being used in particular for medium voltage network, wherein for example carrying STO by way of communication data
Control signal.Hereinafter, the power cell that Primary Reference is used in particular for medium voltage network is described.
Fig. 1, which is schematically shown, presses driving in the example for electrical equipment in accordance with one embodiment of the present disclosure
The block diagram of system, wherein thering is a power cell to be configured as executing in the power cell for a phase being used in the different phases
The safe torque shutdown operation.
As shown in Figure 1, user interface control panel 101 provides the I/ between user and system in middle pressure drive system 100
O Interface control function.The user interface control panel 101 can receive STO control signal from the user.It is controlled in response to the STO
Signal processed, the information of instruction STO control signal can be generated in user interface control panel 101, and the information is included in communication number
In, to be transmitted to fibre optic plate 106 by communication line.Microcontroller 102 can be used for controlling the place to user's I/O data
Reason, such as PFGA can be notified to execute corresponding operation, logical operation.Signal Regulation plate 105 is received to be surveyed such as voltage, electric current
Magnitude converts thereof into suitable value and then executes analog-to-digital conversion by Σ Δ module 104, and the digital signal after conversion is provided to
FGPA103 is handled.Fibre optic plate 106 receives the communication data from user interface controller 101, FPGA103, therein multiple
Miscellaneous programmable logic device (CPLD) 107 carries out branch to these signals and timing adjusts, and is provided to POC gusts of power cell
Column 120.POC array 120 includes being used for out of phase multiple power cell 121-129.It is one in the POC array 120 shown
3X3 array, the array are used for three phases, three POC of each phase.Electric power from transformer 130 is provided to POC 121to
129。
In the POC array, one of POC 124 is the POC with STO function, which can monitor electrical system
Communication data on middle communication line to check in communication data whether include the information of instruction safe torque shutdown, and is rung
Ying Yu detects the information comprising instruction safe torque shutdown in the communication data, and the semiconductor devices into power cell mentions
For the cut-off signals turned off for safe torque.
It should be noted that the POC in POC array with STO function can be any one of the phase.If at this
Using a POC with STO function in POC array, then STO turn-off function can be provided in a phase, this may be implemented
The safe torque of motor 140 turns off.It can achieve the security level of STO SIL1 in this way.Further it is also possible in a phase
The POC that more than one has STO is provided.
It is still further contemplated that being provided which the power cell with STO function in each phase in three phases.It below will ginseng
Examine the block diagram that drive system is pressed in another example for electrical equipment of Fig. 2 description in accordance with one embodiment of the present disclosure.
The system architecture of Fig. 2 and Fig. 1 is substantially similar, the differ in that, difference is located in the POC array
POC 124, POC 128, POC 123 in phase are the POC with STO function, i.e., there are a support STO function in each phase
Each in the POC of energy, these POC can monitor the communication data in electrical system on communication line, to check communication data
In know it is no include instruction safe torque shutdown information, and in response to detect in the communication data comprising instruction safety turn
The information of square shutdown, the semiconductor devices into power cell provide the cut-off signals for safe torque shutdown.Other component
Operation and Fig. 3 shown in component operation it is substantially similar, details are not described herein again.
It should be noted that can be appointing in the phase comprising the POC with STO function in each phase of POC array
What one.Each mutually uses the POC with STO function in the POC array, then can provide STO in each phase
Turn-off function, this can be provided which no-voltage in three phases when the safe torque of motor 140 turns off.It can reach in this way
To the security level of STO SIL2.Further it is also possible to provide the POC that more than one has STO in a phase.
In addition, as previously mentioned, for drive system of the invention, can using mode identical with low-voltage driving system come
Realize STO function.But, it may be desirable to increase large number of signal lines cable to transmit required STO signal, this will make system
Become huge and complicated, and the increase for generating cost is also higher, furthermore security isolation is also not easy to realize in a simple manner.For
This also suggests carrying STO control information by communication line in the disclosure.It, will be the letter of instruction STO according to the program
Breath is included in communication data to be transmitted on communication line, by indicating the information of STO in monitoring communication data, to
Semiconductor devices (such as IGBT) in power cell provides the enable signal of STO.
Hereinafter, will be described in detail with reference to Fig. 3 to Figure 10 for realizing Fig. 1 and user board shown in Fig. 2 and
The example embodiment of POC.However it should be noted that embodiment shown in attached drawing and the implementation being described below
Mode provides for purposes of illustration, and the disclosure is not limited to these shown embodiments.
The control dress of user interface in accordance with one embodiment of the present disclosure is schematically shown referring initially to Fig. 3, Fig. 3
Set 300 block diagram.One of all Fig. 1 in this way of user interface control device 300 and user interface control panel 101 shown in Fig. 2
Exemplary device is used to receive input from the user and provides a user system output.The control panel, which can receive, to be come from
The power supply of user is connected and power-down signal (such as being issued by user by power knob), comes in addition, it can also be received
Signal is controlled from the STO of user.For example, can provide two STO buttons for user, any one can trigger STO control
Signal processed.Herein, Safety Redundancy may be implemented by providing two STO buttons.It is appreciated, however, that being provided solely for a STO
Button is also feasible.In addition it is also necessary to explanation, what STO button was also possible to be implemented as to touch on screen virtual is pressed
Button, or in the case where two STO buttons, one of them is virtual push button, and the other is mechanical button.
The STO control signal that user issues can be received by signal processing module 301.But it is passed with tradition by special circuit
It gives unlike STO control signal, signal processing module 301 is configured to respond to receive STO control from the user
The information of instruction STO is added, in communication data to be transmitted on communication line in signal.In other words, signal processing
The instruction STO that module 301 is responsible for being converted to the control signal that instruction STO from the user is enabled include in communication data is needed
The information to be activated, the information will will be transmitted as communication data by communication line.For example, the letter of instruction STO
Breath can have the mode different from ordinary communication data, so that it can be identified.
On the other hand, at power cell, it will be monitored to the communication data on communication line, wherein wrapped with detection
The instruction STO contained needs the information being activated.When detecting the information, power cell will be appreciated that user it is expected to enable STO
Function.Next, by the power cell provided in the disclosure is described with reference to Fig. 4 to Fig. 8.
With reference to Fig. 4, it illustrates the block diagrams of power cell 400 in accordance with one embodiment of the present disclosure.Such as Fig. 2 institute
Show, power cell 400 be rectified, filtered using power power electronic device, the high-voltage frequency converter component of inversion comprising
Communication monitoring module 401 and semiconductor devices 402.Semiconductor devices 402 is, for example, insulated gate transistor (IGBT), can be with
It is arranged according to full bridge structure.The circuit structure for the semiconductor device device arranged in a manner of full-bridge in power cell be it is known, this
Place repeats no more.
In addition, it should be noted that, be hereinafter illustrated the example using IGBT as semiconductor devices 402, however
It is understood that they can also use other kinds of semiconductor devices or other topological structures.For IGBT, at IGBT
The voltage that pole applies can control IGBT and turn on and off.
Communication monitoring module 401 has input terminal, and wherein the communication data on communication line is transferred to communication monitoring
The input terminal of module 401, the communication monitoring module can be configured for the communication data of monitoring input, and in response to inspection
The information comprising instruction safe torque shutdown in the communication data is measured, is provided in output terminal to the semiconductor devices
Cut-off signals for safe torque shutdown.
Communication monitoring module 401 can be realized by various modes, can for example be digitally implemented, also can use
Analog form.Hereinafter, for purposes of illustration, mode is described implementation of the disclosure by specific example.
With reference to Fig. 5, example communication monitoring modular 401 ' in accordance with one embodiment of the present disclosure is shown, this is logical
Letter monitoring modular 401 ' is counted by the high and low level to communication data to realize that communication system monitors.As shown in figure 5, communication
Monitoring modular 401 ' may include two counters, i.e. high level counter 4011 and low level counter 4012.The high electricity
Flat counter 4011 is configured for counting the high level in the communication data.4012 quilt of low level counter
It is configured to count the low level in the communication data.Clock source 2013a and 2013b are two clock sources, point
Not Wei high level counter 4011 and low level counter 4012 clock signal is provided, so that two counters are counted.It is high
Level counter 4011 and low level counter 4012 can realize using identical counter, but in this case low
It is needed before the communication data input terminal of level counter 4012 using a phase inverter, for inverting input data, thus real
Now to low level counting.
If reaching corresponding predetermined threshold to the counting of high level, high level counter 4011 is in its output terminal
High level signal is provided as counter output signal；If reaching corresponding predetermined threshold to the low level counting,
Then low level counter 4012 also provides high level signal in its output terminal as counting indicator signal.Low level counter
4012 and the output of high level counter 4011 be provided to signal generation portion part 4014.The signal generation portion part 4014 is configured
For the counting indicator based on the high level at the output of any of the high level counter and the low level counter
Signal provides the cut-off signals for safe torque shutdown.Signal generation portion part 4014 another example is or door.Or door is for example
OR operation is executed to two counter output signals, as long as any one is high level, or Men Qi output
High level signal is provided as the cut-off signals for STO, i.e. STO enables signal.The STO signal, which can be provided to, partly leads
Body device 402 is particularly provided to the gate pole of IGBT, to keep semiconductor devices in an off state, thereby executing STO function
Energy.
Turn in addition, communication monitoring module 401 ' can also send instruction safety to the master controller (not shown) of power cell
Square turn-off function is in the signal of effective status.Such as the STO of generation can be controlled into signal and be supplied to power cell simultaneously
Master controller is in effective status to notify main control STO that function is enabled at present.In this way, master controller can stop pair
The processing such as decoding of communication data.
In addition, for security isolation, it is also contemplated that provide being isolated between security and dangerous part.For example,
It is contemplated that for notifying STO function is on the route that the slave communication monitoring module of effective status goes to master controller to increase
One isolated part 4015, which is, for example, diode or buffer, so that signal is merely capable of producing component in signal
4014 are passed up to the side of master controller.Even if in this way, will not be caused to security when master controller occurs abnormal
Any influence.
It is still further contemplated that also increasing isolated part on the route of communication data to master controller itself, so as to only
Only allow communication data to the transmission of master controller, so that the signal from master controller does not interfere with communication monitoring mould
The monitoring result of block.Such as, it may be considered that increase an isolated part 4016 on the route that communication data goes to master controller,
The component equally can be such as diode or buffer, so that communication data is merely capable of in the direction to master controller
Upper transmission, the signal from master controller will not have any impact to security.
It is in furthermore it is also possible to further send instruction safe torque turn-off function to the electrical system where power cell
The signal of effective status, to inform that the current safe torque shutdown of electrical system has been activated.The transmission of the signal can be according to
Be sent to the class signal of master controller as mode send, i.e., from communication monitoring module 401 ' send；It can also be in master controller
It receives after the signal, there is the master controller to send the letter that instruction safe torque turn-off function is in effective status to electrical system
Number.In response to the signal, electrical system can for example shown STO initiate mode on display screen or man-machine interface
Or update, and can such as stop to the coding of communication data and transmission operate.
It should be noted that turning it off required level may be different for different types of semiconductor devices.
Therefore, a phase inverter can be increased before STO control signal enters gate pole, so as to energy according to the property of semiconductor devices
It is enough properly to make semiconductor devices for required state.It is still further contemplated that using protective redundancy, it can consider by attached
Another group of low level counter 4012 and high level counter 4011 added, to generate other STO signal, to semiconductor device
Part is controlled, such as may be respectively used for the upper bridge arm and lower bridge arm of control full bridge structure.Even if going out in this way in set of circuits
When now abnormal, another set of circuits remains to work normally, and realizes STO function.
Fig. 6 schematically show in accordance with one embodiment of the present disclosure for illustrating communication monitoring circuit operation
Timing diagram.As shown in fig. 6, respectively illustrating clock signal 601, data 602 in figure.Clock signal 601 is, for example, by clock source
4013a and 4013b is supplied to the clock signal of high level counter and low level counter.Data 602 are, for example, to want communication line
The initial data of road transmission.It can use high level counter to count data 602, while utilizing low level counter
Communication data 602 is counted.For example, high level can be carried out to communication data 602 in the rising edge of each clock signal
It counts and low level counts.If the counting of any one reaches corresponding predetermined threshold, such as 8, then STO is being generated
Enable signal.
In the communication monitoring module being shown in FIG. 5, while high level counter and low level counter are used, in this way
The power cell can both support multiple high level as the application of STO control information, can also support multiple high level conducts
The application of STO control information.In addition, in the communication failure for occurring to indicate with high level or the communication indicated with low level occurs
It, also can be with automatic trigger STO function in the case where failure.
It should be noted that although the specific structure of communication monitoring circuit is described above, it should be noted that
This is merely for illustrative purposes and the example communication observation circuit that provides, and other embodiments are also feasible.Next,
Other two exemplary communication monitoring circuit will be described with reference to Fig. 5 and Fig. 6.
Fig. 7 schematically shows the frame of another example communication monitoring modular in accordance with one embodiment of the present disclosure
Figure.As shown in fig. 7, exemplary communication monitoring module 401 " is different from communication monitoring module 401 ' shown in Fig. 3, only include
One high level counter 4011, the high level counter 4011 are more than that will export height after predetermined threshold to the counting of high level
Level, high level will be provided to semiconductor devices as STO signal, to execute STO.Other component such as clock in Fig. 5
Component shown in source 4013a, isolated part 4015 and 4016 and Fig. 3 executes similar operations, realizes similar functions, herein for
Simplified purpose, repeats no more.
Fig. 8 schematically shows the frame of another example communication monitoring modular in accordance with one embodiment of the present disclosure
Figure.As shown in fig. 6, exemplary communication monitoring module 401 " ' is similar with communication monitoring module 401 " shown in fig. 5, only wrap
A counter is included, but differently include in the communication monitoring module 401 " ' is low level counter 4012, Er Feigao
Level counter.High level will be exported after the low level counter 4012 is more than predetermined threshold to low level counting, it should
High level will be provided to semiconductor devices as STO signal, to execute STO.Other component such as clock source 4013b, isolation
Component shown in component 4015 and 4016 and Fig. 3 and Fig. 5 executes similar operations, similar functions is realized, herein for simplified
Purpose repeats no more.
According to embodiment of the present disclosure, a kind of STO technical solution based on communication data monitoring is provided, volume is not necessarily to
Outer cable or route support STO function, system and original system with STO function are had preferable compatible
Property, while its implementation is relatively simple, cost of implementation is lower.And due to carrying STO control information by communication line,
Rather than special circuit, therefore user can be made to be isolated with the dangerous part of high pressure, protect user security.
It should be noted that although in the above description, the scheme proposed in the present invention is directed to middle pressure driving system
System, but the program also in fact can be used in other drive systems of such as low-pressure system.
Next, the embodiment for the method that reference Fig. 9 and Figure 10 description are provided in the disclosure.
Fig. 9 schematically shows the method for handling STO control signal in accordance with one embodiment of the present disclosure
900 flow chart.As shown in figure 9, user interface control panel receives safe torque shutdown from the user at step 901
Control signal.Such as user issues STO by the STO button that system provides and controls signal, which controls signal can be by user
Interface Control Panel receives.In step 902, after user interface control panel receives STO control signal, believe in response to the control
Number, the information for indicating safe torque shutdown is included in communication data to be transmitted by communication line.It thus can be with
Save special circuit required for being used for transmission STO control signal.For example, the information of instruction STO can have and common communications
The different mode of data, so that it can be identified.
Figure 10 schematically shows the process of the method 1000 for STO in accordance with one embodiment of the present disclosure
Figure.As shown in Figure 10, the communication data in step 1001, communication monitoring module monitors electrical system on communication line.In step
Rapid 1002, communication monitoring module is in response to detecting the information comprising instruction safe torque shutdown in the communication data, Xiang Gong
Semiconductor devices in rate unit provides the cut-off signals for safe torque shutdown.Communication monitoring and cut-off signals generate can be with
It realizes by various modes.
In in accordance with one embodiment of the present disclosure, the high level in the communication data is counted, wherein such as
The counting of high level described in fruit reaches predetermined threshold, it means that detects in the communication data and turns safely comprising the instruction
The information of square shutdown, therefore the cut-off signals for safe torque shutdown are provided.The counting can by high level counter come
It realizes, when the counting of the high level reaches predetermined threshold, high level can be provided in the output of counter, which can
Using as the control signal for STO.
In another embodiment according to the disclosure, the low level in the communication data is counted, wherein such as
Low level counting described in fruit reaches predetermined threshold, it means that detects in the communication data and turns safely comprising the instruction
The information of square shutdown.At this point it is possible to provide the cut-off signals for safe torque shutdown.The counting can be counted by low level
Device is realized, when the low level counting reaches predetermined threshold, can provide high level in the output of counter, height is electric
The flat control signal that can be used as STO.
It, can be respectively to the high level and low level in the communication data in another embodiment according to the disclosure
It is counted, wherein if the counting of any of the high voltage and described low-voltage reaches corresponding predetermined threshold, this meaning
Taste detect in the communication data comprising it is described instruction safe torque shutdown information.At this point it is possible to provide for safety
The cut-off signals of torque shutdown.The counting of the high level can be realized by high level counter, in the meter of the high level
When number reaches predetermined threshold, high level can be provided at the output of counter.The low level counting can pass through low level
Counter is realized, when the low level counting reaches predetermined threshold, can provide high level in the output of counter.So
It afterwards, can be based on the counting of the high level at the output of any of the high level counter and the low level counter
Indication signal provides the cut-off signals for safe torque shutdown.For example, can be to high level counter and low level counter
Output execute or operation, i.e., any one output is high level, then exports high level, or the result of operation will be as using
In the control signal of STO.
It, can also be further in step 1003 to the master of the power cell in accordance with one embodiment of the present disclosure
Controller sends the signal that instruction safe torque turn-off function is in effective status.Such as the STO of generation can be controlled into signal
It is supplied to the master controller of power cell simultaneously, to notify main control STO that function is enabled at present, is in effective status.This
Sample, master controller can stop the processing such as decoding to communication data.
In in accordance with one embodiment of the present disclosure, step 1004 can also be included in and referred to electrical system transmission
Show that safe torque turn-off function is in the information of effective status, to inform that the current safe torque shutdown of electrical system has been opened
With.Electrical system for example can shown or updated to STO initiate mode on display screen or man-machine interface, and
Can such as stop to the coding of communication data and transmission operate.
In in accordance with one embodiment of the present disclosure, can also step 1005 by the power cell for realizing
The security of safe torque shutdown is isolated with other dangerous parts in the power cell.The isolation passes through buffering
Device and diode any one realize.Such as, it may be considered that for notifying STO function to be in going to for effective status
Increase an isolated part 4015 on the route of master controller, so that signal is merely capable of in signal generation portion part 4014 to master control
The side of device processed is passed up, even if in this way, will not have any impact to security when master controller occurs abnormal.This
Outside, it is also contemplated that also increase isolated part on the route of communication data to master controller itself, only to allow to communicate
Data to master controller transmission so that the signal from master controller does not interfere with the monitoring knot of communication monitoring module
Fruit.
It should be noted that embodiment of the present disclosure can be come in fact with the combination of hardware, software or software and hardware
It is existing.Hardware components can use special logic to realize；Software section can store in memory, by instruction execution appropriate
System, such as microprocessor or special designs hardware execute.
It will be understood by those skilled in the art that above-mentioned method and apparatus part may can be used and include
It is realized in processor control routine, such as in such as mounting medium of disk, CD or DVD-ROM, such as read-only memory
Such code is provided in the data medium of the programmable memory of (firmware) or such as optics or electrical signal carrier.
The device and its component of present embodiment can be by such as ultra large scale integrated circuit or gate array, such as logic cores
The programmable hardware device of the semiconductor or field programmable gate array of piece, transistor etc., programmable logic device etc.
Hardware circuit realize, the software realization executed by various types of processors can also be used, can also be by above-mentioned hardware circuit
Combination such as firmware with software is realized.
Although describing the disclosure by reference to the embodiment being presently contemplated that, but it is understood that the present disclosure is not limited to institutes
Disclosed embodiment.On the contrary, the disclosure is intended to cover in the spirit and scope of the appended claims included various repair
Change and equivalent arrangements.The scope of the appended claims meets most broad interpretation, to include all such modifications and equivalent knot
Structure and function.
Claims (13)
1. a kind of drive system for electrical equipment, comprising:
Power cell array, the power cell array include being used for out of phase multiple power cells,
Wherein it is configured in the power cell array at least one power cell in the power cell of at least one phase
The power supply in corresponding phase to be disconnected, to execute safe torque shutdown operation in response to receiving safe torque cut-off signals.
2. drive system according to claim 1, wherein being used in the power cell of a phase in the different phases
At least one power cell is configured as executing the safe torque shutdown operation.
3. drive system according to claim 1, wherein being used in the power cell of each phase in the different phases
At least one power cell is configured as executing the safe torque shutdown operation.
4. drive system described in -3 any items according to claim 1, wherein for executing the safe torque shutdown
At least one described power cell includes:
Semiconductor devices, and
Communication monitoring module is configured for the communication data in monitoring electrical system on communication line, and in response to detection
Information into the communication data comprising instruction safe torque shutdown, Xiang Suoshu semiconductor devices is provided to close for safe torque
Disconnected cut-off signals.
5. drive system according to claim 4, wherein the communication monitoring module is additionally configured to:
The signal that instruction safe torque turn-off function is in effective status is sent to the master controller of the power cell.
6. drive system according to claim 4, wherein the communication monitoring module is additionally configured to:
The information that instruction safe torque turn-off function is in effective status is sent to the electrical system.
7. drive system according to claim 4 is configured wherein the communication monitoring module includes high level counter
For being counted to the high level in the communication data,
Wherein if the counting of the high level reaches predetermined threshold, the communication monitoring module detects the communication data
In comprising it is described instruction safe torque shutdown information.
8. drive system according to claim 4 is configured wherein the communication monitoring module includes low level counter
For being counted to the low level in the communication data,
Wherein if the low level counting reaches predetermined threshold, the communication monitoring module detects the communication data
In comprising it is described instruction safe torque shutdown information.
9. drive system according to claim 4, wherein the communication monitoring module includes:
High level counter is configured for counting the high level in the communication data, and if the high electricity
Flat counting reaches predetermined threshold, then provides the counter output signal of high level；
Signal generation portion part is configured for counting the low level in the communication data, and if the low electricity
Flat counting reaches predetermined threshold, then provides the counter output signal of high level；And
Signal generation portion part is configured as based in the defeated of any of the high level counter and the low level counter
The counting indicator signal of the high level in source provides the cut-off signals for safe torque shutdown.
10. drive system according to claim 4, further includes:
At least one isolated part is configured for the security that will be turned off in the power cell for realizing safe torque
It is isolated with other dangerous parts in the power cell.
11. drive system according to claim 10, wherein the isolating device includes that buffer and diode are wherein appointed
What one.
12. drive system according to claim 4, further includes: user interface control device, wherein the user interface control
Device processed includes processing module, is configured as receiving the control signal of safe torque shutdown from the user, and the processing mould
Block is configured to, and in response to the control signal, the information for indicating safe torque shutdown is included in communication data by logical
Letter route is transmitted.
13. the drive system is middle pressure drive system according to claim 1 to method described in 3.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710910613.2A CN109586618B (en) | 2017-09-29 | 2017-09-29 | Driving system for electrical equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710910613.2A CN109586618B (en) | 2017-09-29 | 2017-09-29 | Driving system for electrical equipment |
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| CN109586618A true CN109586618A (en) | 2019-04-05 |
| CN109586618B CN109586618B (en) | 2022-10-04 |
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| CN109586618B (en) | 2022-10-04 |
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