CN110394462B - Modularized high-speed motorized spindle driver based on GaN/SiC power device - Google Patents
Modularized high-speed motorized spindle driver based on GaN/SiC power device Download PDFInfo
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- CN110394462B CN110394462B CN201910706767.9A CN201910706767A CN110394462B CN 110394462 B CN110394462 B CN 110394462B CN 201910706767 A CN201910706767 A CN 201910706767A CN 110394462 B CN110394462 B CN 110394462B
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- 238000004891 communication Methods 0.000 claims description 21
- 230000003993 interaction Effects 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000003754 machining Methods 0.000 abstract description 9
- 229910002601 GaN Inorganic materials 0.000 description 14
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 14
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 7
- 229910010271 silicon carbide Inorganic materials 0.000 description 7
- 239000004065 semiconductor Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010076 replication Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/70—Stationary or movable members for carrying working-spindles for attachment of tools or work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/02—Driving main working members
- B23Q5/04—Driving main working members rotary shafts, e.g. working-spindles
- B23Q5/10—Driving main working members rotary shafts, e.g. working-spindles driven essentially by electrical means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Multiple Motors (AREA)
Abstract
The invention relates to a modularized high-speed electric spindle driver based on a GaN/SiC power device, which comprises more than one high-speed electric spindle driver module capable of being expanded in cascade, wherein each high-speed electric spindle driver module is a minimum unit driver independent module; the minimum unit driver independent module outputs three-phase voltage and current, and the three-phase voltage and current are transmitted to the high-speed electric spindle motor through the power filter module to control the high-speed electric spindle motor to work; the minimum unit driver independent module comprises a bus protection circuit, a bus brake circuit, a GaN half-bridge circuit, an over-temperature protection circuit, a direct-current bus input interface, a 24V logic power input interface, a module cascading RJ11 interface and a CPU module. The invention improves the switching frequency of the high-speed electric spindle, reduces the harmonic wave of the output current of the driver, reduces the temperature of the high-speed electric spindle during operation, and improves the machining precision of the machine tool.
Description
Technical Field
The invention relates to a high-speed motorized spindle driver, in particular to a modularized high-speed motorized spindle driver based on a GaN/SiC power device.
Background
Currently, the mainstream high-speed electric spindle driver on the market basically adopts a traditional second-generation power semiconductor device IGBT (insulated gate bipolar transistor) or mos fet (metal oxide semiconductor field effect transistor) and the like, the voltage switching frequency of the power output of the high-speed electric spindle driver formed by using the second-generation band power semiconductor device (IGBT, mos fet and the like) is lower, and the device loss is larger, so that the overall efficiency of the high-speed electric spindle driver is lower. When the high-speed motorized spindle driver drives the high-speed motorized spindle at a higher rotating speed, the switching times in the output current fundamental wave are less, and the output carrier wave is lower, so that the harmonic wave of the output current of the driver is larger, the phenomena of vibration, heating and the like of the motorized spindle can occur when the high-speed motorized spindle is driven at a high speed section, and finally the machining precision of a machine tool in machining a workpiece is lower.
On the other hand, the development trend of the existing machine tool is that one machine tool can simultaneously carry out multi-axis workpiece machining so as to improve the machining efficiency, multi-dimension and multi-angle machining and the like. If the traditional independent high-speed motorized spindle driver is adopted, a plurality of independent devices are needed, the mutual cooperative control of each driver needs to be carried out, communication and coordination are carried out through the machine tool master control, and therefore the drivers cannot communicate in time and the burden of the machine tool master control is increased. And because the redundant condition exists between the traditional single independent devices, the device cannot be well expanded, and the space utilization rate in the machine tool is low, the development trend of the existing machine tool is towards high integration, and the development direction of small volume has a large defect.
Disclosure of Invention
Aiming at the problems, the invention aims to provide a modularized high-speed electric spindle driver based on a GaN/SiC power device, which improves the switching frequency of a high-speed electric spindle, reduces the harmonic wave of the output current of the driver, reduces the temperature of the high-speed electric spindle during operation and improves the machining precision of a machine tool.
In order to achieve the above purpose, the present invention adopts the following technical scheme: a modularized high-speed electric spindle driver based on a GaN/SiC power device comprises more than one high-speed electric spindle driver module capable of being expanded in a cascading way, wherein each high-speed electric spindle driver module is a minimum unit driver independent module; the minimum unit driver independent module outputs three-phase voltage and current, and the three-phase voltage and current are transmitted to the high-speed electric spindle motor through the power filter module to control the high-speed electric spindle motor to work; the minimum unit driver independent module comprises a bus protection circuit, a bus brake circuit, a GaN half-bridge circuit, an over-temperature protection circuit, a direct current bus input interface, a 24V logic power input interface, a module cascading RJ11 interface and a CPU module; the externally input power direct current is connected to the bus brake circuit through the direct current bus input interface, and the power is supplied to the GaN half-bridge circuit, the bus protection circuit and the over-temperature protection circuit through the bus brake circuit; externally input direct-current 24V logic power is accessed through the 24V logic power input interface to provide energy for the work of the CPU module; the bus protection circuit performs protection work when bus voltage and bus current exceed preset voltage and bus current under the control of the CPU module; the bus brake circuit works under the control of the CPU module, and when the high-speed electric spindle motor suddenly decelerates or suddenly brakes, the bus voltage is suddenly lifted, and then the bus brake circuit works; three GaN half-bridge circuits are arranged to form a three-phase two-level inverter, the input power direct current is inverted into three-phase alternating current to be output, and the power filter module is used for controlling the high-speed electric spindle motor to work; the over-temperature protection circuit detects the temperature of the independent module of the minimum unit driver in real time and transmits the temperature to the CPU module, and when the temperature inside the independent module of the minimum unit driver exceeds a set temperature value, the CPU module controls the over-temperature protection circuit to perform over-temperature protection; and the module cascade RJ11 interface is connected with the CPU module to realize information transmission with other minimum unit driver independent modules.
Further, the minimum unit driver independent module further comprises a USB module, a display control RJ45 interface, a PLC connection interface, an RS 485/CAN interface, an address selector and a nixie tube display; the USB module, the display control RJ45 interface, the PLC connection interface, the RS 485/CAN interface, the address selector and the nixie tube display are all connected with the CPU module for information interaction; the display control RJ45 interface is used for being connected with the display controller, and the PLC connection interface is used for communicating with an external PLC; the RS 485/CAN interface is used for connecting a field bus and performing remote bus control of the high-speed electric spindle; the address selector is responsible for giving the drive a determined bus address, and the nixie tube display is responsible for displaying the current running and error state of the drive.
Furthermore, more than two independent modules of the minimum unit driver are cascaded through the RJ11 interfaces of the module cascade connection to form a high-speed electric spindle driving expansion module group, and the inside of the expansion module group is connected into a system through power and communication to drive the high-speed electric spindle motor to operate.
Further, the direct current bus input interface and the 24V logic power input interface are correspondingly connected between two adjacent minimum unit driver independent modules directly through cables, so that all the minimum unit driver independent modules commonly use a power direct current input bus and a 24V control logic power supply; the two adjacent independent modules of the minimum unit driver are directly inserted into the RJ11 interface of the module cascade through an external communication line, and all the independent modules of the minimum unit driver are cascade into a whole and then are in communication connection with the outside; and two adjacent independent modules of the minimum unit driver are connected with an external display control device after being cascaded through the display control RJ45 interface.
Further, a switching power supply module and a display controller are arranged outside the high-speed motorized spindle driving expansion module group; the high-speed electric spindle driving expansion module group is respectively in information interaction with the switch power supply module and the display controller, the switch power supply module group provides energy for the modularized high-speed electric spindle driving expansion module group, and the high-speed electric spindle driving expansion module group monitors the power supply state of the switch power supply module.
Further, the switching power supply module comprises a 24V logic switching power supply, a power logic switching power supply and another module cascade RJ11 interface; and the 24V logic switch power supply and the power logic switch power supply are communicated with the high-speed motorized spindle driving expansion module group in real time through the RJ11 interface of the other module cascade connection.
Further, the display controller comprises a display module TFT-LCD, another display control RJ45 interface and a key control module, wherein the other display control RJ45 interface and the key control module are connected with the display module TFT-LCD; and the display module TFT-LCD performs information interaction with the high-speed electric spindle driving expansion module group through CAN communication.
Due to the adoption of the technical scheme, the invention has the following advantages: 1. the invention can greatly improve the switching frequency of the power circuit in the driver by utilizing the third generation power semiconductor devices (GaN, siC) compared with the second generation power semiconductor devices (IBGT, mosFET and the like). Particularly, when the rotating speed of the high-speed motorized spindle exceeds 6 ten thousand revolutions per minute, the high-speed motorized spindle needs a fundamental wave with a larger frequency. At this time, if the carrier ratio is more than 30 times, the output current harmonic wave is very small, the temperature of the high-speed motorized spindle during operation is reduced, and the machining precision of a machine tool for machining a workpiece is greatly improved. 2. For the existing multi-axis simultaneous processing machine tool, an indefinite number of high-speed motorized spindle drivers may be needed, and the extensible module is formed by replication, extension and construction based on the minimum unit driver, so that a single driver is the minimum unit, and the single high-speed motorized spindle can be independently driven, and a plurality of drivers can be subjected to cascade extension to form a module, so that the cascade extension of the drivers is convenient. 3. According to the invention, the driver modules are in cascade connection for cooperative communication, the communication adopts communication protocols such as industrial isolation CAN, isolation RS485 and industrial Ethernet, and the like, and the cascade connection is easily expanded through RJ11 and RJ45 interfaces, so that the communication among the modules is completed, and the problem of communication duration is well solved. 4. The function of the extensible module can jointly utilize the power direct current input bus and the 24V control logic power supply, so that the whole size is greatly reduced, and the whole size of the driver is improved. 5. The individual drivers of the present invention may also communicate in connection with an HMI display controller, whereby each driver extended in the integrated system may be easily controlled by an HMI display controller through the integrated communication cascade module.
Drawings
FIG. 1 is a schematic illustration of the mechanical construction of a minimum unit driver of the present invention;
FIG. 2 is a schematic diagram of a minimum cell driver principle module of the present invention;
FIG. 3 is a schematic mechanical diagram of a cascade extension module of the present invention;
fig. 4 is a schematic diagram illustrating the principle of the cascade extension module of the present invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
As shown in fig. 1 and 2, the invention provides a modularized high-speed motorized spindle driver based on a GaN/SiC power device, which is based on a high-speed motorized spindle modularized driver of a third-generation power GaN (gallium nitride) and SiC (silicon carbide) device and has strong expandability, and particularly has strong applicability for an application in which a plurality of motorized spindles with high rotational speeds (rotational speeds higher than 6 ten thousand rpm) need to be expanded simultaneously. The invention comprises more than one high-speed motorized spindle driver module that can be cascade extended, each of which is a minimum unit driver independent module 17. The minimum unit driver independent module 17 outputs three-phase voltage and current, and the three-phase voltage and current are transmitted to the high-speed electric spindle motor 16 through the power filter module 15 to control the high-speed electric spindle motor 16 to work; wherein the minimum unit driver independent module 17 and the power filter module 15 are both disposed in a housing.
The minimum unit driver independent module 17 comprises a bus protection circuit 1, a bus brake circuit 2, a GaN half-bridge circuit 3, an over-temperature protection circuit 4, a direct-current bus input interface 5, a 24V logic power input interface 6, a USB module 8, a display control RJ45 interface 9, a PLC connection interface 10, an RS 485/CAN interface 11, a module cascade RJ11 interface 12, an address selector 13, a nixie tube display 14 and a CPU module 7.
The externally input power direct current is connected to a bus brake circuit 2 through a direct current bus input interface 5, and the power is supplied to a GaN half-bridge circuit 3, a bus protection circuit 1 and an over-temperature protection circuit 4 through the bus brake circuit 2; the externally input direct current 24V logic power is connected through the 24V logic power input interface 6 to provide energy for the work of the CPU module 7. The bus protection circuit 1 performs a protection operation when the bus voltage and current exceed a predetermined voltage and current under the control of the CPU module 7. Under the control of the CPU module 7, the bus brake circuit 2 operates when the bus voltage is suddenly raised when the high-speed electric spindle motor 16 suddenly decelerates or suddenly brakes, and the bus brake circuit 2 consumes excessive energy in the form of heat energy on a brake resistor in the bus brake circuit 2, so that the bus is protected. The GaN half-bridge circuit 3 is provided with three inverters which form a three-phase two-level inverter, the input power direct current is inverted into three-phase alternating current to be output, the high-speed electric spindle motor 16 is controlled to work through the power filter module 15, and the high-frequency voltage components output by the driver are filtered by the power filter module 15 to protect the high-speed electric spindle. The over-temperature protection circuit 4 detects the temperature of the independent module 17 of the minimum unit driver in real time and transmits the temperature to the CPU module 7, and when the temperature inside the independent module 17 of the minimum unit driver exceeds a set temperature value, the CPU module 7 controls the over-temperature protection circuit 4 to work so as to perform over-temperature protection.
The module cascade RJ11 interface 12 is connected with the CPU module 7 to realize information transmission with other minimum unit driver independent modules 17. The USB module 8, the display control RJ45 interface 9, the PLC connection interface 10, the RS 485/CAN interface 11, the address selector 13 and the nixie tube display 14 are all connected with the CPU module 7 for information interaction. The display control RJ45 interface 9 is used for being connected with a display controller, and can monitor and control the high-speed motorized spindle on line when being connected with the display controller; the PLC interface 10 is used for communicating with an external PLC; the RS 485/CAN interface 11 is used for connecting a field bus and performing remote bus control of the high-speed electric spindle; the address selector 13 is responsible for giving the drive a certain bus address and the nixie tube display 14 is responsible for displaying the current operation and error status of the drive.
In a preferred embodiment, as shown in fig. 3 and fig. 4, after more than two minimum unit driver independent modules 17 are cascaded through the module cascade RJ11 interface 12, a high-speed electric spindle driving expansion module group 23 is formed, and the inside of the expansion module group is connected into a system through power and communication to drive the corresponding high-speed electric spindle motor 16 to operate. The direct current bus input interfaces 5 and 24V logic power input interfaces 6 are correspondingly connected between the two adjacent minimum unit driver independent modules 17 directly through cables, so that all the minimum unit driver independent modules 17 commonly use power direct current input buses and 24V control logic power sources; the two adjacent minimum unit driver independent modules 17 are directly inserted into the module cascading RJ11 interface 12 through an external communication line, all the minimum unit driver independent modules 17 are cascaded into a whole and then are in communication connection with the outside, and communication among each minimum unit driver independent module 17 is completed. The two adjacent minimum unit driver independent modules 17 are connected with an external display control device after being cascaded through a display control RJ45 interface 9.
As shown in fig. 4, a switching power supply module 20 and a display controller 30 are further disposed outside the high-speed motorized spindle drive extension module group 23. The high-speed electric spindle driving expansion module group 23 performs information interaction with the switch power supply module 20 and the display controller 30 respectively, the switch power supply module 20 provides energy for the modularized high-speed electric spindle driving expansion module group 23, and the high-speed electric spindle driving expansion module group 23 monitors the power supply state of the switch power supply module 20. The high-speed electric spindle driver extensible system with higher integration level is formed by the switch power supply module 20, the high-speed electric spindle driver extension module group 23 and the display controller 30. Wherein:
the switching power supply module 20 comprises a 24V logic switching power supply 21, a power logic switching power supply 22 and another module cascading RJ11 interface 12; the 24V logic switch power supply 21 and the power logic switch power supply 22 are in real-time communication with the high-speed motorized spindle drive extension module group 23 through another module cascade RJ11 interface 12.
The display controller 30 comprises a display module TFT-LCD31, another display control RJ45 interface 9 and a key control module 32, and the other display control RJ45 interface 9 and the key control module 32 are connected with the display module TFT-LCD 31; the display module TFT-LCD31 performs information interaction with the high-speed electric spindle driving expansion module group 23 through CAN communication.
The foregoing embodiments are only illustrative of the present invention, and the structure, dimensions, placement and shape of the components may vary, and all modifications and equivalents of the individual components based on the teachings of the present invention should not be excluded from the scope of protection of the present invention.
Claims (4)
1. A modularized high-speed motorized spindle driver based on a GaN/SiC power device is characterized in that: the high-speed motorized spindle driver comprises more than one high-speed motorized spindle driver module capable of being expanded in a cascading manner, wherein each high-speed motorized spindle driver module is a minimum unit driver independent module; the minimum unit driver independent module outputs three-phase voltage and current, and the three-phase voltage and current are transmitted to the high-speed electric spindle motor through the power filter module to control the high-speed electric spindle motor to work;
the minimum unit driver independent module comprises a bus protection circuit, a bus brake circuit, a GaN half-bridge circuit, an over-temperature protection circuit, a direct current bus input interface, a 24V logic power input interface, a module cascading RJ11 interface and a CPU module;
The externally input power direct current is connected to the bus brake circuit through the direct current bus input interface, and the power is supplied to the GaN half-bridge circuit, the bus protection circuit and the over-temperature protection circuit through the bus brake circuit; externally input direct-current 24V logic power is accessed through the 24V logic power input interface to provide energy for the work of the CPU module; the bus protection circuit performs protection work when bus voltage and bus current exceed preset voltage and bus current under the control of the CPU module; the bus brake circuit works under the control of the CPU module, and when the high-speed electric spindle motor suddenly decelerates or suddenly brakes, the bus voltage is suddenly lifted, and then the bus brake circuit works; three GaN half-bridge circuits are arranged to form a three-phase two-level inverter, the input power direct current is inverted into three-phase alternating current to be output, and the power filter module is used for controlling the high-speed electric spindle motor to work; the over-temperature protection circuit detects the temperature of the independent module of the minimum unit driver in real time and transmits the temperature to the CPU module, and when the temperature inside the independent module of the minimum unit driver exceeds a set temperature value, the CPU module controls the over-temperature protection circuit to perform over-temperature protection; the module cascading RJ11 interface is connected with the CPU module to realize information transmission with other minimum unit driver independent modules;
after more than two independent modules of the minimum unit driver are cascaded through the module cascading RJ11 interface, a high-speed electric spindle driving expansion module group is formed, and the inside of the expansion module group is connected into a system through power and communication to drive the high-speed electric spindle motor to operate;
A switching power supply module and a display controller are arranged outside the high-speed motorized spindle drive expansion module group; the high-speed electric spindle driving expansion module group is respectively in information interaction with the switch power supply module and the display controller, the switch power supply module group provides energy for the modularized high-speed electric spindle driving expansion module group, and the high-speed electric spindle driving expansion module group monitors the power supply state of the switch power supply module;
the switching power supply module comprises a 24V logic switching power supply, a power logic switching power supply and another module cascade RJ11 interface; the 24V logic switch power supply and the power logic switch power supply are communicated with the high-speed motorized spindle driving expansion module group in real time through the RJ11 interface of the other module cascade;
the direct current bus input interface and the 24V logic power input interface are correspondingly connected between two adjacent independent modules of the minimum unit driver through cables, so that all the independent modules of the minimum unit driver commonly use a power direct current input bus and a 24V control logic power supply; and two adjacent independent modules of the minimum unit driver are directly inserted into the RJ11 interface of the module cascade through an external communication line, and all the independent modules of the minimum unit driver are cascade into a whole and then are in communication connection with the outside.
2. The modular high-speed motorized spindle drive as set forth in claim 1, wherein: the minimum unit driver independent module further comprises a USB module, a display control RJ45 interface, a PLC connection interface, an RS 485/CAN interface, an address selector and a nixie tube display; the USB module, the display control RJ45 interface, the PLC connection interface, the RS 485/CAN interface, the address selector and the nixie tube display are all connected with the CPU module for information interaction; the display control RJ45 interface is used for being connected with the display controller, and the PLC connection interface is used for communicating with an external PLC; the RS 485/CAN interface is used for connecting a field bus and performing remote bus control of the high-speed electric spindle; the address selector is responsible for giving the drive a determined bus address, and the nixie tube display is responsible for displaying the current running and error state of the drive.
3. The modular high-speed motorized spindle drive as set forth in claim 2, wherein: and two adjacent independent modules of the minimum unit driver are connected with an external display control device after being cascaded through the display control RJ45 interface.
4. A modular high speed motorized spindle drive as set forth in claim 3, wherein: the display controller comprises a display module TFT-LCD, another display control RJ45 interface and a key control module, wherein the other display control RJ45 interface and the key control module are connected with the display module TFT-LCD; and the display module TFT-LCD performs information interaction with the high-speed electric spindle driving expansion module group through CAN communication.
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| CN207965568U (en) * | 2018-02-09 | 2018-10-12 | 深圳市祈飞科技有限公司 | A kind of motor controller system |
| CN108696223A (en) * | 2018-07-27 | 2018-10-23 | 清正源华（北京）科技有限公司 | A kind of ultrahigh speed spindle controller based on GaN power devices |
| CN210548149U (en) * | 2019-08-01 | 2020-05-19 | 清正源华（北京）科技有限公司 | Modularized high-speed electric spindle driver based on GaN/SiC power device |
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