CN105024592B - A kind of BLDC electrical faults State Feedback Approach and application BLDC motors, air-conditioning system - Google Patents
A kind of BLDC electrical faults State Feedback Approach and application BLDC motors, air-conditioning system Download PDFInfo
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- CN105024592B CN105024592B CN201410172707.0A CN201410172707A CN105024592B CN 105024592 B CN105024592 B CN 105024592B CN 201410172707 A CN201410172707 A CN 201410172707A CN 105024592 B CN105024592 B CN 105024592B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D18/00—Testing or calibrating apparatus or arrangements provided for in groups G01D1/00 - G01D15/00
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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
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/08—Arrangements for controlling the speed or torque of a single motor
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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
- H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
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- General Physics & Mathematics (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
- Control Of Multiple Motors (AREA)
Abstract
The invention discloses a kind of BLDC electrical faults State Feedback Approach and application BLDC motors, air-conditioning system, what described BLDC motors had feedback port FG, the FG output of outside output motor rotating speed signal is pwm signal, it is characterised in that：When the outside output motor rotating speed signals of port FG, its frequency is defined on first frequency section, and the size of rotating speed is represented in the range of first frequency section, with the PWM signal frequency size；When outside output motor fault-signal, using the second frequency signal different from first frequency section, the malfunction feedback method is simple, easy to operate, can feed back the different fault-signal of motor, and reliability is high.
Description
Technical field：
The present invention relates to a kind of BLDC electrical faults State Feedback Approach and application BLDC motors, air-conditioning system.
Background technology：
Traditional air-conditioning system, the BLDC motors (i.e. DC brushless motor) of coiler fan have 5 companies in existing industry
Connect port, one be connected to ground earth terminal GND, a speed input mouth VSP, a DC bus-bar voltage input port VDC,
One low-voltage dc power supply input port VCC and motor speed signal feedback port FG, and the interface of most of air-conditioning manufacturers
Also it is designed so as to.
But this straight BLDC motors are not provided with the feedback of status of motor, therefore the master control borad of air-conditioning can not read direct current
The status information of brushless electric machine, such as the motor status letter of the failure of excess temperature, stall, excessively stream, Hall, clock failure, overvoltage etc.
Breath.With customer demand, it is desirable to which motor producer will feed back these motor status information on DC brushless motor.It is now universal
Solution is exactly to increase by a signal line on DC brushless motor to feed back these motor status information, but thus
It is high to change wire clamp mould, the air-conditioning mainboard interface, motor interface etc. of existing motor, very difficult operation, and cost.
The content of the invention：
It is an object of the invention to provide a kind of BLDC electrical faults State Feedback Approach and application BLDC motors, air-conditioning system
System, the malfunction feedback method is simple, easy to operate, can feed back the different fault-signal of motor, and reliability is high；BLDC electricity
Machine is simple in construction, in the case where not changing existing electric machine structure, can feed back the different fault-signal of motor, simple to operate, into
This is low, and reliability is high；The air-conditioning system is simple in construction, easy to operate, and reliability is high.
The purpose of the present invention is achieved by following technical proposals.
A kind of BLDC electrical faults State Feedback Approach, described BLDC motors have outside output motor rotating speed signal
Feedback port FG, FG output is pwm signal, and when the outside output motor rotating speed signals of port FG, its frequency is defined on first
Frequency band, the size of rotating speed is represented in the range of first frequency section, with the PWM signal frequency size；When outside output motor
During fault-signal, using the second frequency signal different from first frequency section.
When BLDC motors described above have various faults signal, using the different duty of the pwm signal of second frequency come
Represent different failures.
The dutycycle of all pwm signals of first frequency section described above is all 50%.
First frequency segment limit described above is 10HZ to 300HZ scopes, and second frequency signal is in 1KHZ frequencies.
A kind of BLDC motors, described BLDC motors include stator module, rotor assembly, control circuit board, stator module
With rotor assembly magnetic coupling, control circuit board is integrated with Micro-processor MCV, inverter and interface unit, Micro-processor MCV output
Signal controls inverter, every phase coil winding of inverter connection control stator module, and described interface unit is given birth to including frequency
Into circuit, an I/o mouth of Micro-processor MCV outwards exports different frequency and the PWM letters of dutycycle by frequency generation circuit
Number and form port FG.
Frequency generation circuit described above is a transistor switching circuit.
Transistor switching circuit described above includes triode Q1, the 6th resistance R106, the 5th resistance R105, the 4th electricity
Hinder R104 and electric capacity C107, the 4th resistance R104 of port FG series connection, the 5th resistance R105 and power supply VCC2, port FG and the 4th electricity
Hinder node connection electric capacity C107 one end between R104, electric capacity C107 other ends ground connection, the 4th resistance R104, the 5th resistance R105
Between node be connected with triode Q1 colelctor electrodes, triode Q1 emitter stages connection ground, triode Q1 base stages pass through the 6th resistance
One I/o mouth of R106 and Micro-processor MCV connects.
During the outside output motor rotating speed signal of port FG described above, its frequency is defined on first frequency section, first
The size of rotating speed is represented in the range of frequency band, with the PWM signal frequency size；When outside output motor fault-signal, adopt
With the second frequency signal different from first frequency section.
When BLDC motors described above have various faults signal, using the different duty of the pwm signal of second frequency
To represent different failures, the dutycycle of all pwm signals of first frequency section is all 50%.
The frequency of second frequency signal described above is 1KHZ, and 10% dutycycle represents overvoltage, and 20% dutycycle represents
Excessively stream, 30% dutycycle represent excess temperature, and 40% dutycycle represents Hall failure, and 50% dutycycle represents integrated power module IPM
Failure.
Interface unit described above is also connected to ground earth terminal GND, speed input mouth VSP, one including one
An individual DC bus-bar voltage input port VDC and low-voltage dc power supply input port VCC.
A kind of air-conditioning system, include air conditioning system controller and driving blower fan BLDC motors, air conditioning system controller with
BLDC motors have 5 connectivity ports, and one is connected to ground earth terminal GND, a speed input mouth VSP, a direct current mother
Line voltage input port VDC, a low-voltage dc power supply input port VCC and motor speed signal feedback port FG, it is special
Sign is：When BLDC motors are to air conditioning system controller output motor rotating speed signal, its frequency is defined on first frequency section,
The size of rotating speed is represented in the range of first frequency section, with the PWM signal frequency size；When outside output motor fault-signal
When, using the second frequency signal different from first frequency section.
When BLDC motors described above are to air conditioning system controller output various faults signal, using second frequency
The different duty of pwm signal represents different failures.
The dutycycle of all pwm signals of first frequency section described above is all 50%.
First frequency segment limit described above is 10HZ to 300HZ scopes, and second frequency signal is in 1KHZ frequencies.
The present invention compared with prior art, has the effect that：1) when the outside output motor rotating speed signal of BLDC motors,
Its frequency is defined on first frequency section, and the big of rotating speed is represented in the range of first frequency section, with the PWM signal frequency size
It is small；When outside output motor fault-signal, using the second frequency signal different from first frequency section, pass through common port
FG, on the FG of port i.e. can output motor rate signal or motor failure signal, without changing the wire clamp mould of existing motor
Tool, air-conditioning mainboard interface, motor interface etc., this method is simple, easy to operate, can feed back the different fault-signal of motor, can
High by property, cost is low；2) BLDC motor interfaces unit includes frequency generation circuit, and an I/o mouth of Micro-processor MCV passes through frequency
Rate generative circuit outwards exports different frequency segment signal and forms port FG, i.e. can on the FG of port by common port FG
Output motor rate signal or motor failure signal, in the case where not changing existing electric machine structure, motor difference can be fed back
Fault-signal, simple to operate, cost is low, and reliability is high；3) dutycycle of all pwm signals of first frequency section is all
50%, first frequency segment limit is 10HZ to 300HZ scopes, and second frequency signal is in 1KHZ frequencies, configures advantages of simple；4)
When BLDC motors are to air conditioning system controller output various faults signal, using the different duty of the pwm signal of second frequency
To represent different failures, it is easy to implement, it is convenient and swift.
Brief description of the drawings：
Fig. 1 is the structural representation of DC brushless motor of the present invention；
Fig. 2 is the circuit theory diagrams of the present invention；
Fig. 3 is the physical circuit figure of frequency generation circuit of the present invention；
Fig. 4 is the physical circuit figure of bleeder circuit of the present invention；
Fig. 5 is that port FG of the present invention feeds back a kind of schematic diagram of rate signal；
Fig. 6 is the schematic diagram that port FG of the present invention feeds back another rate signal；
Fig. 7 is that port FG of the present invention feeds back a kind of schematic diagram of fault-signal；
Fig. 8 is the schematic diagram that port FG of the present invention feeds back another fault-signal；
Fig. 9 is the structure principle chart of air-conditioning system.
Embodiment：
Below by specific embodiment and with reference to accompanying drawing, the present invention is described in further detail：
Embodiment one：As depicted in figs. 1 and 2, the present invention is a kind of BLDC motors, and described DC brushless motor includes fixed
Sub-component 1, rotor assembly 2, control circuit board 3, stator module 1 and the magnetic coupling of rotor assembly 2, control circuit board 3 are integrated with micro-
Processor MCU, inverter and interface unit, Micro-processor MCV output signal control inverter, inverter connection control stator pack
Every phase coil winding of part 1, described interface unit include frequency generation circuit, and an I/o mouth of Micro-processor MCV passes through frequency
Rate generative circuit outwards exports different frequency segment signal and forms port FG, and inverter can be integrated power module IPM, and it contains
There are multiple IGBT elements, Hall element HALL detection rotor-position signals are sent to Micro-processor MCV, Micro-processor MCV output letter
Number control inverter.
As shown in figure 3, described frequency generation circuit is a transistor switching circuit.Transistor switching circuit includes three
Pole pipe Q1, the 6th resistance R106, the 5th resistance R105, the 4th resistance R104 and electric capacity C107, port FG the 4th resistance of series connection
R104, the 5th resistance R105 and power supply VCC2+15V, the node connection electric capacity C107 mono- between port FG and the 4th resistance R104
End, electric capacity C107 other ends ground connection, node and triode Q1 colelctor electrodes between the 4th resistance R104, the 5th resistance R105 connect
Connect, triode Q1 emitter stages connection ground, triode Q1 base stages pass through the 6th resistance R106 and an I/o mouth of Micro-processor MCV
Connection.
What BLDC motors had feedback port FG, the FG output of outside output motor rotating speed signal is pwm signal, works as port
During the outside output motor rotating speed signals of FG, its frequency is defined on first frequency section, in the range of first frequency section, with the PWM
Signal frequency size represents the size of rotating speed；When outside output motor fault-signal, using different from first frequency section
Two frequency signals, when BLDC motors have various faults signal, represented not using the different duty of the pwm signal of second frequency
Same failure, the dutycycle of all pwm signals of first frequency section is all 50%, and first frequency segment limit is 10HZ to 300HZ
Scope, second frequency signal are in 1KHZ frequencies.As shown in Figure 5, the port FG of BLDC motors can externally export first frequency
Section f0=1/T1=50HZ, the T1=0.02 seconds, represent feedback is the first tach signal, and wherein dutycycle is 50%；Such as Fig. 6
Shown, the port FG of BLDC motors can externally export first frequency section f1=1/T2=100HZ, T2=0.01 second, but duty
Than being still 50%, represent feedback is second of tach signal, due to f2 ＞ f1, represents second of rotating ratio the first rotating speed more
It is high.
When port FG can externally export fault-signal, event is represented using the frequency signal different from first frequency section
Hinder signal.As shown in fig. 7, port FG can externally export a kind of failure-frequency f2=1/T3=1kHZ, the T3=0.001 seconds, when
When having various faults signal, difference is represented using the different duty of the fixed-frequency PWM signal different from first frequency section
Failure.10% represents overvoltage, and 20% represents excessively stream, and 30% represents excess temperature, and 40% represents Hall failure, 50% presenting set
Success rate module IPM failures, K are the frequency of high-frequency signal.The dutycycle of failure-frequency f2 in Fig. 7 is 80%, represents super
Cross rated speed failure；As shown in figure 8, port FG can externally export a kind of failure-frequency f2=1/T3=1kHZ, T3=
0.001 second, failure-frequency f2 dutycycle was 50%, and 50% dutycycle represents integrated power module IPM failures.
As shown in Figure 2 and Figure 4, described interface unit is also connected to ground earth terminal GND, a speed input including one
Port VSP, a DC bus-bar voltage input port VDC and a low-voltage dc power supply input port VCC.Micro-processor MCV
An I/o mouth by bleeder circuit receive outside input rate signal and form speed input mouth VSP.Described partial pressure
Circuit includes first resistor R101, second resistance R102,3rd resistor R103, electric capacity C105, electric capacity C106 and diode
VD101。
The present invention principle be：Interface unit includes frequency generation circuit, and an I/o mouth of Micro-processor MCV passes through frequency
Rate generative circuit outwards exports different frequency segment signal and forms port FG, i.e. can on the FG of port by common port FG
Output motor rate signal or motor failure signal, in the case where not changing existing electric machine structure, motor difference can be fed back
Fault-signal, simple to operate, cost is low, and reliability is high.
Embodiment two：As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 5, the present invention is a kind of BLDC motors, described BLDC motor bags
Stator module, rotor assembly, control circuit board are included, stator assembly and rotor assembly magnetic coupling, control circuit board is integrated with micro- place
Manage device MCU, inverter and interface unit, Micro-processor MCV output signal control inverter, inverter connection control stator module
Every phase coil winding, described interface unit includes frequency generation circuit, and an I/o mouth of Micro-processor MCV passes through frequency
Generative circuit outwards exports the pwm signal of different frequency and dutycycle and forms port FG.
The present invention principle be：During the outside output motor rotating speed signals of port FG, its frequency is defined on first frequency section,
The size of rotating speed is represented in the range of first frequency section, with the PWM signal frequency size；When outside output motor fault-signal
When, using the second frequency signal different from first frequency section, when BLDC motors have various faults signal, using second frequency
The different duty of pwm signal represents different failures, and the dutycycle of all pwm signals of first frequency section is all 50%,
The frequency of second frequency signal is 1KHZ, and 10% dutycycle represents overvoltage, and 20% dutycycle represents excessively stream, and 30% dutycycle represents
Excess temperature, 40% dutycycle represent Hall failure, and 50% dutycycle represents integrated power module IPM failures, and this method is simple, operation
It is convenient, the different fault-signal of motor can be fed back, reliability is high, and cost is low.
Embodiment three：As shown in figure 9, the present invention is a kind of air-conditioning system, including air conditioning system controller and driving blower fan
BLDC motors, air conditioning system controller and BLDC motors have 5 connectivity ports, one be connected to ground earth terminal GND, one
Speed input mouth VSP, a DC bus-bar voltage input port VDC, a low-voltage dc power supply input port VCC and motor
The feedback port FG of tach signal, it is characterised in that：When BLDC motors are to air conditioning system controller output motor rotating speed signal,
Its frequency is defined on first frequency section, and the big of rotating speed is represented in the range of first frequency section, with the PWM signal frequency size
It is small；When outside output motor fault-signal, using the second frequency signal different from first frequency section.Port FG is outwards exported
During motor speed signal, its frequency is defined on first frequency section, in the range of first frequency section, big with the PWM signal frequency
The small size for representing rotating speed；When outside output motor fault-signal, using the second frequency signal different from first frequency section,
When BLDC motors have various faults signal, different failures is represented using the different duty of the pwm signal of second frequency, the
The dutycycle of all pwm signals of one frequency band is all 50%., the frequency of second frequency signal is 1KHZ.
Above example is better embodiment of the invention, but the implementation of the present invention is not limited to this, and other are any
Without departing from the present invention Spirit Essence with made under principle change, modification, replacement, combine, simplification, be equivalent displacement side
Formula, it is included within protection scope of the present invention.
Claims (15)
1. a kind of BLDC electrical faults State Feedback Approach, described BLDC motors have the anti-of outside output motor rotating speed signal
Port FG is presented, FG outputs in port are pwm signals, it is characterised in that：When the outside output motor rotating speed signals of port FG, its frequency
Rate is defined on first frequency section, and the size of rotating speed is represented in the range of first frequency section, with the PWM signal frequency size；When
During outside output motor fault-signal, using the second frequency signal different from first frequency section.
A kind of 2. BLDC electrical faults State Feedback Approach according to claim 1, it is characterised in that：BLDC motors have more
During kind fault-signal, different failures is represented using the different duty of the pwm signal of second frequency.
A kind of 3. BLDC electrical faults State Feedback Approach according to claim 1 or 2, it is characterised in that：First frequency
The dutycycle of all pwm signals of section is all 50%.
A kind of 4. BLDC electrical faults State Feedback Approach according to claim 3, it is characterised in that：First frequency Duan Fan
It is 10HZ to 300HZ scopes to enclose, and second frequency signal is in 1KHZ frequencies.
5. a kind of BLDC motors for the BLDC electrical fault State Feedback Approachs realized described in claim 1, described BLDC electricity
Machine includes stator module, rotor assembly, control circuit board, and stator assembly and rotor assembly magnetic coupling, control circuit board are integrated with
Micro-processor MCV, inverter and interface unit, Micro-processor MCV output signal control inverter, inverter connection control stator
Every phase coil winding of component, described interface unit include frequency generation circuit, and an I/o mouth of Micro-processor MCV passes through
Frequency generation circuit outwards exports the pwm signal of different frequency and dutycycle and forms port FG.
A kind of 6. BLDC motors according to claim 5, it is characterised in that：Described frequency generation circuit is three poles
Pipe on-off circuit.
A kind of 7. BLDC motors according to claim 6, it is characterised in that：Described transistor switching circuit includes three poles
Pipe Q1, the 6th resistance R106, the 5th resistance R105, the 4th resistance R104 and electric capacity C107, the 4th resistance R104 of port FG series connection,
5th resistance R105 and power supply VCC2, node connection electric capacity C107 one end between port FG and the 4th resistance R104, electric capacity
The C107 other ends are grounded, and the node between the 4th resistance R104, the 5th resistance R105 is connected with triode Q1 colelctor electrodes, triode
Q1 emitter stages connection ground, triode Q1 base stages are connected by an I/o mouth of the 6th resistance R106 and Micro-processor MCV.
A kind of 8. BLDC motors according to claim 5 or 6 or 7, it is characterised in that：The outside output motor rotating speeds of port FG
During signal, its frequency is defined on first frequency section, turns in the range of first frequency section, with PWM signal frequency size representative
The size of speed；When outside output motor fault-signal, using the second frequency signal different from first frequency section.
A kind of 9. BLDC motors according to claim 8, it is characterised in that：When BLDC motors have various faults signal, adopt
Different failures, the duty of all pwm signals of first frequency section are represented with the different duty of the pwm signal of second frequency
Than being all 50%.
A kind of 10. BLDC motors according to claim 9, it is characterised in that：The frequency of second frequency signal is 1KHZ,
10% dutycycle represents overvoltage, and 20% dutycycle represents excessively stream, and 30% dutycycle represents excess temperature, and 40% dutycycle represents Hall mistake
Effect, 50% dutycycle represent integrated power module IPM failures.
A kind of 11. BLDC motors according to claim 7, it is characterised in that：Interface unit is also connected to ground including one
Earth terminal GND, a speed input mouth VSP, a DC bus-bar voltage input port VDC and a low-voltage dc power supply are defeated
Inbound port VCC.
12. a kind of air-conditioning system of BLDC motors using described in claim 5, including air conditioning system controller and driving blower fan
BLDC motors, air conditioning system controller and BLDC motors have 5 connectivity ports, one be connected to ground earth terminal GND, one
Speed input mouth VSP, a DC bus-bar voltage input port VDC, a low-voltage dc power supply input port VCC and motor
The feedback port FG of tach signal, it is characterised in that：When BLDC motors are to air conditioning system controller output motor rotating speed signal,
Its frequency is defined on first frequency section, and the big of rotating speed is represented in the range of first frequency section, with the PWM signal frequency size
It is small；When outside output motor fault-signal, using the second frequency signal different from first frequency section.
A kind of 13. air-conditioning system according to claim 12, it is characterised in that：BLDC motors are defeated to air conditioning system controller
When going out various faults signal, different failures is represented using the different duty of the pwm signal of second frequency.
A kind of 14. air-conditioning system according to claim 13, it is characterised in that：All pwm signals of first frequency section
Dutycycle is all 50%.
15. according to a kind of air-conditioning system described in claim 12 or 13 or 14, it is characterised in that：First frequency segment limit is
10HZ to 300HZ scopes, second frequency signal are in 1KHZ frequencies.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410172707.0A CN105024592B (en) | 2014-04-25 | 2014-04-25 | A kind of BLDC electrical faults State Feedback Approach and application BLDC motors, air-conditioning system |
| PCT/CN2014/077012 WO2015161530A1 (en) | 2014-04-25 | 2014-05-08 | Fault state feedback method for bldc motor and application of bldc motor and air-conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410172707.0A CN105024592B (en) | 2014-04-25 | 2014-04-25 | A kind of BLDC electrical faults State Feedback Approach and application BLDC motors, air-conditioning system |
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| CN105024592B true CN105024592B (en) | 2017-11-10 |
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| CN109004871B (en) * | 2018-07-19 | 2019-11-26 | 温州长江汽车电子有限公司 | A kind of time progress control method of on-board air conditioner controller direct current generator |
| CN111308344A (en) * | 2020-03-18 | 2020-06-19 | 珠海格力电器股份有限公司 | Electrical appliance, motor fault identification method and device thereof and storage medium |
| CN111912085B (en) * | 2020-05-22 | 2023-10-27 | 海信空调有限公司 | Driving circuit and air conditioner |
| CN112019101B (en) * | 2020-08-31 | 2022-05-17 | 中山大洋电机股份有限公司 | Reverse rotation dust removal control method of BLDC motor applied to air conditioner outdoor unit |
| CN118631126A (en) * | 2024-08-06 | 2024-09-10 | 中山大洋电机股份有限公司 | Novel PWM control method of ECM motor |
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|---|---|
| CN105024592A (en) | 2015-11-04 |
| WO2015161530A1 (en) | 2015-10-29 |
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