CN206283443U - Motor-drive circuit - Google Patents
Motor-drive circuit Download PDFInfo
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- CN206283443U CN206283443U CN201621021792.1U CN201621021792U CN206283443U CN 206283443 U CN206283443 U CN 206283443U CN 201621021792 U CN201621021792 U CN 201621021792U CN 206283443 U CN206283443 U CN 206283443U
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- drive module
- motor
- drive
- circuit
- drive circuit
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Abstract
The utility model discloses motor-drive circuit, including：First drive module, the second drive module, first drive module, the second drive module structure are identical, are connected with motor parallel.
Description
Technical field
The utility model is related to field of electric control, more particularly to motor-drive circuit.
Background technology
With the development and the adjustment of energy resource structure of Power Electronic Technique, electric automobile is increasingly popularized.But
The integrity problem of electric automobile is slowly displayed, and electric automobile is compared with traditional energy automobile.The reliability of electronic component
Property require high, especially high-power driving module section, once component failure occurs in high speed in driving, that consequence can't bear
Envision.
Except electric automobile field, other industrial circles are also in this way, such as some important production links or application
Occasion, once motor driving part point goes wrong, consequence is inestimable.
Utility model content
The problem that the utility model is solved is that existing motor driver reliability is low；To solve described problem, this practicality is new
Type provides a kind of motor driver.
The motor driver that the utility model is provided includes：First drive module, the second drive module, described first drives
Module, the second drive module structure are identical, are connected with motor parallel.
Further, first drive module is three half-bridge driven modules or full-bridge drive module.
Further, first drive module includes MOS device and reverse two pole being connected in parallel with the MOS device
Pipe.
Further, first drive module includes IGBT device and reverse two pole being connected in parallel with the IGBT device
Pipe.
Further, the first drive module bus end and the second drive module bus end are separately installed with and always open
Close, the master switch controls on/off.
Further, also include：Drive module failure detector circuit, fault display circuit, switching circuit, rectification feedback conditioning
Circuit.
Brief description of the drawings
Fig. 1 is the structural representation of motor driver provided by the utility model；
Fig. 2 is that the electric current of motor driver provided by the utility model, voltage, temperature compare with set threshold voltage
Circuit diagram, D1 ~ D3 is diode in figure, and U1 is comparator chip, and R1 is voltage regulation resistance；
The control signal switching circuit schematic diagram of the motor driver that Fig. 3 is stated by the utility model is carried.
Specific embodiment
Hereinafter, motor driver provided by the utility model is further elaborated in conjunction with the accompanying drawings and embodiments.
As shown in figure 1, the motor driver that the utility model is provided includes：First drive module, the second drive module, institute
State the first drive module, the second drive module structure identical, be connected in parallel with motor M1.In the present embodiment, described first drive
Dynamic model block includes metal-oxide-semiconductor Q1~Q6, and the backward dioded in parallel with each metal-oxide-semiconductor, and second drive module includes MOS
Pipe Q7~Q12, and the backward dioded in parallel with each metal-oxide-semiconductor；In other embodiment of the present utility model, described first
Drive module and the second drive module can also be other three half-bridge driven modules being made up of MOS device or IGBT device or
Full-bridge drive module.
First drive module and the second drive module are mutually redundant, and can mutually be cut by drive module switching circuit
Change.The control signal of untapped drive module is drawn high or is dragged down so that its MOSFET or IGBT are closed.Not
The drive module for using, rectification can be participated in motor operation course by the diode in parallel with MOS or IGBT, passed through
Charged a battery or other purposes after circuit conditioning.
In embodiment of the present utility model, can according to the electric current for flowing through MOS or IGBT, the pressure drop at their two ends,
And operating temperature etc. judges the state of drive module internal component.Once there is abnormal, hardware view moment closing PWM
Export or be switched to another drive module.The switching of driver can be operated with manual switches or by controller according to signal
Detection case automatic identification is controlled.
When the heat alarm of excessively stream, over-pressed signal and motor to drive module feeds back, can only pass through
One comparator enters line level and redirects feedback, can be by the comparator of several signals by the adjustment of sensor periphery parameter
Threshold values is set to same value, so as to reduces cost while reliability is ensured.
Control signal as seen from Figure 3, drive module is switched by one speed-sensitive switch of control.Switch on bus
It is to be cut off when breaking down, the driver for preventing failure produces influence to the normal work of spare drive.Do not having
Connection can be kept during failure, as charging a battery or other needs for electricity.In Fig. 1, can be combined according to three-phase current and turned on
Sequential extrapolates the electric current being passed on MOS or IGBT, and the every phase voltage amplitude that can be exported according to driver combines conducting sequential
The pressure drop of each conducting MOSFET or IGBT is calculated, whether the normal works of MOSFET or IGBT are judged in conjunction with state of temperature
Make.Fig. 2 is that busbar voltage and electric current and temperature signal are sent into same comparator, in advance adjusts the threshold values of these signals
It is whole for consistent, which save component.
Although the utility model is disclosed as above with preferred embodiment, it is not for limiting the utility model, appointing
What those skilled in the art is not being departed from spirit and scope of the present utility model, may be by the method and skill of the disclosure above
Art content makes possible variation and modification to technical solutions of the utility model, therefore, it is every without departing from the utility model technology
The content of scheme, any simple modification made to above example according to technical spirit of the present utility model, equivalent variations and
Modification, belongs to the protection domain of technical solutions of the utility model.
Claims (6)
1. motor-drive circuit, it is characterised in that including：First drive module, the second drive module, described first drives mould
Block, the second drive module structure are identical, are connected with motor parallel.
2. according to the motor-drive circuit described in claim 1, it is characterised in that first drive module is that three half-bridges drive
Dynamic model block or full-bridge drive module.
3. according to the motor-drive circuit described in claim 1, it is characterised in that first drive module includes MOS device
And the backward dioded being connected in parallel with the MOS device.
4. according to the motor-drive circuit described in claim 1, it is characterised in that first drive module includes IGBT device
And the backward dioded being connected in parallel with the IGBT device.
5. according to the motor-drive circuit described in claim 1, it is characterised in that the first drive module bus end and described
Second drive module bus end is separately installed with master switch, and the master switch controls on/off.
6. according to the motor-drive circuit described in claim 1, it is characterised in that also include：Drive module failure detector circuit,
Fault display circuit, switching circuit, rectification feedback modulate circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621021792.1U CN206283443U (en) | 2016-08-31 | 2016-08-31 | Motor-drive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621021792.1U CN206283443U (en) | 2016-08-31 | 2016-08-31 | Motor-drive circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206283443U true CN206283443U (en) | 2017-06-27 |
Family
ID=59084404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621021792.1U Active CN206283443U (en) | 2016-08-31 | 2016-08-31 | Motor-drive circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206283443U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107317533A (en) * | 2017-07-27 | 2017-11-03 | 中国船舶重工集团公司第七二四研究所 | The online switching device of double servo-drivers and method based on magnetic latching contactor |
| CN107547025A (en) * | 2017-10-22 | 2018-01-05 | 南京理工大学 | The redundancy fault-tolerant control system and method for ultrahigh speed permagnetic synchronous motor |
| CN107769649A (en) * | 2017-10-22 | 2018-03-06 | 南京理工大学 | Ultrahigh speed permagnetic synchronous motor drive control device based on redundancy fault-tolerant |
-
2016
- 2016-08-31 CN CN201621021792.1U patent/CN206283443U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107317533A (en) * | 2017-07-27 | 2017-11-03 | 中国船舶重工集团公司第七二四研究所 | The online switching device of double servo-drivers and method based on magnetic latching contactor |
| CN107547025A (en) * | 2017-10-22 | 2018-01-05 | 南京理工大学 | The redundancy fault-tolerant control system and method for ultrahigh speed permagnetic synchronous motor |
| CN107769649A (en) * | 2017-10-22 | 2018-03-06 | 南京理工大学 | Ultrahigh speed permagnetic synchronous motor drive control device based on redundancy fault-tolerant |
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