CN108649534B - A kind of motor of electric motor car controller hardware protection circuit and method based on CPLD - Google Patents
A kind of motor of electric motor car controller hardware protection circuit and method based on CPLD Download PDFInfo
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- CN108649534B CN108649534B CN201810490271.8A CN201810490271A CN108649534B CN 108649534 B CN108649534 B CN 108649534B CN 201810490271 A CN201810490271 A CN 201810490271A CN 108649534 B CN108649534 B CN 108649534B
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 34
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- 239000003990 capacitor Substances 0.000 claims description 45
- 238000001514 detection method Methods 0.000 claims description 45
- 239000011324 bead Substances 0.000 claims description 15
- 230000004888 barrier function Effects 0.000 claims description 4
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- 238000007689 inspection Methods 0.000 claims 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/0822—Integrated protection, motor control centres
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/122—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for inverters, i.e. DC/AC converters
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- Control Of Ac Motors In General (AREA)
Abstract
The present invention is a kind of motor of electric motor car controller hardware protection circuit and method based on CPLD; including CPU, CPLD chip, signal conversion circuit, fault-signal conversion circuit, CPLD output conversion circuit and other peripheral circuits; CPU is connected by signal conversion circuit with CPLD chip; other peripheral circuits are connected by faulty change-over circuit with CPLD chip, other peripheral circuits are also connected directly with CPLD.The invention has the advantages that carrying out logical process to signal using CPLD chip, the response time is short, the summary responses in the driving wheel system failure；Watchdo function is integrated into CPLD chip, part category and quantity is few, watchdog disabler rate is low；It can be operated with expansion switch amount signal processing and logical process etc., discharge a part of cpu resource.
Description
Technical field
The present invention relates to Motor Control Field more particularly to a kind of motor of electric motor car controller hardware guarantors based on CPLD
Protection circuit and method.
Background technique
Drive motor controller is one of component most crucial in electric car, increasingly with domestic New-energy electric vehicle
Increase and be gradually introducing 26262 standard of European Union ISO, security function relevant design is related to for vehicle and requires higher and higher, active
Safe design is industry development trend.Such as be abnormal suddenly when vehicle high-speed cruising, inverter is in high speed weak magnetic at this time
Operation is failed, and actively initiating three-phase shortcircuit protection at this time can make vehicle enter comparatively safe on-position, final safety
Parking.
Judge to be carried out by CPU software about state processing after the Collections such as overcurrent-overvoltage in conventional motors controller
Operation, response speed are executed all duration values by collection of simulant signal frequency and software code, and failure response time needs several hundred micro-
Time second, IGBT is still being worked normally during this process, it is easy to failure or uncontrollable torque.
The crash detection of CPU generallys use special hello dog chip in conventional motors controller or discrete component carries out
It builds, dedicated watchdog chip or discrete device, which are built, will bring additional cost and component failure probability to rise.
Traditional fault-signal logical process, indicator light processing and other on-off models require to occupy the I/O port of CPU, cpu resource
Occupancy is high.
Summary of the invention
, cost long for the fault-signal operation response time that present invention mainly solves electric machine controllers in the prior art
Problem high, cpu resource occupancy is high, providing one kind can protect power conversion module, at low cost, cpu resource to occupy immediately
The low motor of electric motor car controller hardware protection circuit and method based on CPLD of rate.
The technical solution adopted by the present invention to solve the technical problems is: a kind of motor of electric motor car control based on CPLD
Device hardware protection circuit, including CPU, CPLD chip, signal conversion circuit, fault-signal conversion circuit, CPLD output conversion electricity
Road and other peripheral circuits, CPU are connected by signal conversion circuit with CPLD chip, other peripheral circuits pass through Conversion fault electricity
Road is connected with CPLD chip, other peripheral circuits are also connected directly with CPLD.
In the present invention overcurrent, over-voltage, driving are managed while acquired to the CPU pwm signal exported using CPLD chip
The signals such as failure carry out prime processing to the higher signal of failure priority；Using the nanosecond response time of CPLD to signal
The operations such as output pwm signal carries out three-phase shortcircuit, six phases are opened a way are directly controlled after carrying out logical process, power can be protected to turn immediately
Change the mold block.The functions such as watchdog, fault logic processing, indicating fault are integrated in a chip using CPLD chip, can be subtracted
Few number of devices simultaneously reduces crash rate caused by device, while reducing cost, release part cpu resource.
Scheme as a preference of the above scheme, the signal conversion circuit include the letter of resistance R and capacitor C, CPU
Number output end is electrically connected with resistance R, and the resistance R other end is electrically connected with the pin of capacitor C and CPLD chip respectively, and capacitor C is another
End ground connection.Signal conversion circuit is used to convert the PWMX-T of CPU output, and PWMX-B signal, which is converted to, is input to CPLD chip
PWMF-XT, PWMF-XB signal, X can be U, V, W, i.e. motor three-phase.Signal conversion circuit is equally used for other output letters of CPU
It number is converted to slow-speed of revolution signal speed1, high tach signal speed2, actively triggers three-phase shortcircuit signal CPLD-EN, overcurrent shape
State clear signal OC_Clear, overvoltage condition clear signal OV_Clear, feeding-dog signal SW-5KHz, crash state clear signal
Die_Clear and reset signal RST1, RST2.
Scheme as a preference of the above scheme, the fault-signal conversion circuit include input Fault-T,
Fault-B, magnetic bead FB3, FB4, resistance R62, R63, R64, R65, R66, R67, R68, R69, capacitor C91, C92, C104,
C105, C106, C107 and electrical level transferring chip U5, input Fault-T be electrically connected with magnetic bead FB3, the magnetic bead FB3 other end respectively with
Resistance R63 and resistance R64 electrical connection, resistance R63 connect+5V power supply, the resistance R64 other end respectively with electrical level transferring chip U5 the
Seven pins are connected with capacitor C105 to be connected, and capacitor C105 other end ground connection, input Fault-B is electrically connected with magnetic bead FB4, magnetic bead
The FB4 other end is connected with resistance R62 and resistance R67 respectively, and resistance R62 connects+5V power supply, the resistance R67 other end respectively with level
The 6th pin of conversion chip U5 is connected with capacitor C104, battery C104 other end ground connection, the 5th pipe of electrical level transferring chip U5
Foot ground connection, the 8th pin connect+5V power supply, and the 8th pin and+5V power connection points are connected to capacitor C91, another termination of capacitor C91
Ground, the first pin of electrical level transferring chip U5 connect+3.3V power supply, and the first pin and+3.3V power connection points are connected to capacitor C92,
Capacitor C92 other end ground connection, the second pin of electrical level transferring chip U5 is electrically connected with resistance R65, the resistance R65 other end respectively with
The 37th pin electrical connection of resistance R68, capacitor C106 and CPLD chip, resistance R68 and the capacitor C106 other end are grounded, electricity
The third pin of flat conversion chip U5 is electrically connected with resistance R66, the resistance R66 other end respectively with resistance R69, capacitor C107 and
38th pin of CPLD chip is electrically connected, and resistance R69 and the capacitor C107 other end are grounded, and the 4th of electrical level transferring chip U5 the
Pin ground connection.Fault-signal conversion circuit will drive upper bridge fault-signal Fault-T and lower bridge fault-signal Fault-B driven to turn
It is changed to CPLD-T and CPLD-B signal, is input to CPLD chip.
The preferred embodiment of one kind as above scheme, the 94th to the 99th pin of the CPLD chip, the
14 to the 22nd pin is electrically connected with signal conversion circuit all the way respectively, the first to the 4th pin of CPLD chip, and the 8th
19 pins, the 91st pin and the 100th pin receive overcurrent and over-voltage signal respectively, the 5th pin to the 9th pin, and
11 pins, the 20th three-prong, the 68th to the 70th outside output signal of three-prong.68th to the 73rd pipe
The outside output pwm signal of foot, the 5th pin to the 9th pin, the 11st pin, the 20th three-prong output status signal and multiple
Position signal.
The motor of electric motor car controller hardware guard method based on CPLD that the present invention also provides a kind of, using claim
Motor of electric motor car controller hardware described in 1 or 2 or 3 or 4 protects circuit, comprising the following steps:
S1:CPLD carries out crash detection；
S2: if detecting deadlock, deadlock processing is carried out；If not detecting deadlock, it is carried out
His fault detection and processing；
S3: after the completion of deadlock processing or other fault detections and processing, the open circuit output of six phases is carried out；
S4: carrying out crash detection again, and the open circuit output of six phases is persistently carried out if still having deadlock, if not crashing event
Barrier restores the normal output state of PWM, restarts S1 step.
Scheme as a preference of the above scheme, the described deadlock processing the following steps are included:
S01:CPLD chip exports crash status signal and cpu reset signal outward；
S02: control pwm signal carries out the open circuit output of six phases；
S03: bridge arm fault detection and processing are carried out；
S04: deadlock processing is completed.
Scheme as a preference of the above scheme, the bridge arm fault detection and processing the following steps are included:
S11: detection upper and lower bridge arm malfunction；
S12: upper bridge three-phase shortcircuit is carried out if lower bridge failure；Lower bridge three is carried out if upper bridge failure or without bridge arm failure
Mutually short circuit；Six Xiang Kailu are maintained if the equal failure of upper and lower bridge；
S13: bridge arm fault detection and processing are completed.
Scheme as a preference of the above scheme, other described fault detections and processing the following steps are included:
S21: the state that do not crash is exported；
S22: overcurrent and over-voltage signal detection are carried out if not detecting overcurrent-overvoltage signal and restarts S1 step；
If detecting overcurrent-overvoltage signal, detect whether CPU actively initiates three-phase shortcircuit operation；
S23: if not CPU is actively initiated, then six phase open circuits is first carried out and carry out revolving speed judgement again；If CPU is actively initiated,
Then directly carry out revolving speed judgement；
S24: if detection revolving speed is high speed, bridge arm fault detection and processing are carried out；If detection revolving speed is low speed, do not do
Processing；
S25: other fault detections and processing are completed.
The invention has the advantages that carrying out logical process to signal using CPLD chip, the response time is short, in the event of driving wheel system
Summary responses when barrier；Watchdo function is integrated into CPLD chip, part category and quantity is few, watchdog disabler
Rate is low；It can be operated with expansion switch amount signal processing and logical process etc., discharge a part of cpu resource.
Detailed description of the invention
Fig. 1 is a kind of circuit diagram of signal conversion circuit.
Fig. 2 is a kind of circuit diagram of fault-signal conversion circuit.
Fig. 3 is a kind of pin connection figure of CPLD chip.
Fig. 4 is a kind of flow chart of motor of electric motor car controller hardware guard method of the present invention.
Fig. 5 is a kind of flow chart of deadlock processing.
Fig. 6 is a kind of flow chart of bridge arm fault detection and processing.
Fig. 7 is a kind of flow chart of other fault detections and processing.
Specific embodiment
Below with reference to the embodiments and with reference to the accompanying drawing further description of the technical solution of the present invention.
Embodiment:
A kind of motor of electric motor car controller hardware based on CPLD of the present embodiment protects circuit, it is characterized in that: including
CPU, CPLD chip, signal conversion circuit, fault-signal conversion circuit, CPLD output conversion circuit and other peripheral circuits, CPU
It is connected by signal conversion circuit with CPLD chip, other peripheral circuits are connected by faulty change-over circuit with CPLD chip,
He is also connected directly with CPLD peripheral circuit.
As shown in Figure 1, the signal output end that signal conversion circuit includes resistance R and capacitor C, CPU is electrically connected with resistance R,
The resistance R other end is electrically connected with the pin of capacitor C and CPLD chip respectively, capacitor C other end ground connection.The circuit exports CPU
PWMX-T, PWMX-B signal is converted to PWMF-XT, and PWMF-XB signal, X can be U, V, W, i.e. motor three-phase.The circuit will also
PPC_Speed1, PPC_Speed2, PPC_5KHz, PPC_ClearDie, PPC_ClearOC, PPC_ of CPU output
ClearOV, PPC_EN, PPC_RST1, PPC_RST2 are converted into slow-speed of revolution signal speed1, high tach signal speed2, active
It triggers three-phase shortcircuit signal CPLD-EN, over-current state clear signal OC_Clear, overvoltage condition clear signal OV_Clear, feed
Dog signal SW-5KHz, crash state clear signal Die_Clear and reset signal RST1, RST2.
As shown in Fig. 2, fault-signal conversion circuit includes input Fault-T, Fault-B, magnetic bead FB3, FB4, resistance
R62, R63, R64, R65, R66, R67, R68, R69, capacitor C91, C92, C104, C105, C106, C107 and electrical level transferring chip
U5, input Fault-T are electrically connected with magnetic bead FB3, and the magnetic bead FB3 other end is electrically connected with resistance R63 and resistance R64 respectively, resistance
R63 connects+5V power supply, and the resistance R64 other end is connected with the 7th pin and capacitor C105 of electrical level transferring chip U5 respectively to be connected, electricity
Hold the C105 other end ground connection, input Fault-B be electrically connected with magnetic bead FB4, the magnetic bead FB4 other end respectively with resistance R62 and resistance
R67 is connected, and resistance R62 connects+5V power supply, the resistance R67 other end respectively with the 6th pin and capacitor of electrical level transferring chip U5
C104 is connected, battery C104 other end ground connection, and the 5th pin ground connection of electrical level transferring chip U5, the 8th pin connects+5V power supply, the
Eight pins and+5V power connection points are connected to capacitor C91, capacitor C91 other end ground connection, and the first pin of electrical level transferring chip U5 connects
+ 3.3V power supply, the first pin and+3.3V power connection points are connected to capacitor C92, capacitor C92 other end ground connection, electrical level transferring chip
The second pin of U5 is electrically connected with resistance R65, the resistance R65 other end respectively with resistance R68, capacitor C106 and CPLD chip
The electrical connection of 37 pins, resistance R68 and the capacitor C106 other end are grounded, the third pin and resistance of electrical level transferring chip U5
R66 electrical connection, the resistance R66 other end are electrically connected with the 38th pin of resistance R69, capacitor C107 and CPLD chip respectively,
Resistance R69 and the capacitor C107 other end are grounded, the 4th pin ground connection of electrical level transferring chip U5.Fault-T is to drive upper bridge event
Hindering signal, Fault-B is to drive lower bridge fault-signal, and electrical level transferring chip U5 is SN74LVC2T45QDCURQ1 chip,
Fault-T, Fault-B signal are converted into CPLD-T, CPLD-B signal and are separately input to the 37th of CPLD chip the, 38
Pin.
As shown in figure 3, CPLD chip uses LAMXO640C-3TN100E chip, the 94th of the CPLD chip is arrived
99th pin sequentially inputs PWMF_VB, PWMF_UB, PWMF_UT, PWMF_VT, PWMF_WB, PWMF_VT, and the 14th arrives
22nd pin is electrically connected with signal conversion circuit all the way respectively, and the 14th to the 22nd pin sequentially inputs crash state
Clear signal Die_Clear, high tach signal speed2, slow-speed of revolution signal speed1, over-current state clear signal OC_Clear,
Overvoltage condition clear signal OV_Clear, reset signal RST2, reset signal RST1, three-phase shortcircuit signal CPLD- is actively triggered
The first to the 4th pin of EN, feeding-dog signal SW-5KHz, CPLD chip, the 89th pin, the 91st pin and the 100th
Pin successively receives motor U phase negative current over-current signal OC_U_L, motor U phase positive current over-current signal OC_U_H, motor W phase and bears
Overcurrent signal OC_W_L, motor W phase positive current over-current signal OC_W_H, motor V phase negative current over-current signal OC_V_L, electricity
Machine V phase positive current over-current signal OC_U_H and over-voltage signal DCV_OV, the 5th pin to the 9th pin, the 11st pin, second
Ten three-prongs, the 68th to the 70th three-prong successively outside output status signal and reset signal.
The motor of electric motor car controller hardware guard method based on CPLD that the present invention also provides a kind of, as shown in figure 4, packet
Include following steps:
S1:CPLD carries out crash detection；
S2: if detecting deadlock, deadlock processing is carried out；If not detecting deadlock, it is carried out
His fault detection and processing；
S3: after the completion of deadlock processing or other fault detections and processing, the open circuit output of six phases is carried out；
S4: carrying out crash detection again, and the open circuit output of six phases is persistently carried out if still having deadlock, if not crashing event
Barrier restores the normal output state of PWM, restarts S1 step.
As shown in figure 5, the described deadlock processing the following steps are included:
S01:CPLD chip exports crash status signal and cpu reset signal outward；
S02: control pwm signal carries out the open circuit output of six phases；
S03: bridge arm fault detection and processing are carried out；
S04: deadlock processing is completed.
As shown in fig. 6, the bridge arm fault detection and processing the following steps are included:
S11: detection upper and lower bridge arm malfunction；
S12: upper bridge three-phase shortcircuit is carried out if lower bridge failure；Lower bridge three is carried out if upper bridge failure or without bridge arm failure
Mutually short circuit；Six Xiang Kailu are maintained if the equal failure of upper and lower bridge；
S13: bridge arm fault detection and processing are completed.
As shown in fig. 7, other described fault detections and processing the following steps are included:
S21: the state that do not crash is exported；
S22: overcurrent and over-voltage signal detection are carried out if not detecting overcurrent-overvoltage signal and restarts S1 step；
If detecting overcurrent-overvoltage signal, detect whether CPU actively initiates three-phase shortcircuit operation；
S23: if not CPU is actively initiated, then six phase open circuits is first carried out and carry out revolving speed judgement again；If CPU is actively initiated,
Then directly carry out revolving speed judgement；
S24: if detection revolving speed is high speed, bridge arm fault detection and processing are carried out；If detection revolving speed is low speed, do not do
Processing；
S25: other fault detections and processing are completed.
Specific embodiment described herein is only an example for the spirit of the invention.The neck of technology belonging to the present invention
The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Claims (5)
1. a kind of motor of electric motor car controller hardware based on CPLD protects circuit, it is characterized in that: including CPU, CPLD chip
LAMXO640C-3TN100E, signal conversion circuit, fault-signal conversion circuit, CPLD output conversion circuit and peripheral circuit,
CPU is connected by signal conversion circuit with CPLD chip, and peripheral circuit is connected by faulty change-over circuit with CPLD chip, periphery
Circuit is also connected directly with CPLD, the 94th to the 99th pin of the CPLD chip, the 14th to the 22nd pipe
Foot is electrically connected with signal conversion circuit all the way respectively, the first to the 4th pin of CPLD chip, the 89th pin, and the 91st
Pin and the 100th pin receive overcurrent and over-voltage signal respectively, the 5th pin to the 9th pin, the 11st pin, and the 23rd
Pin, the 68th to the 70th outside output signal of three-prong, the signal conversion circuit include resistance R and capacitor C,
The signal output end of CPU is electrically connected with one end of resistance R, the resistance R other end pipe with one end of capacitor C and CPLD chip respectively
Foot electrical connection, capacitor C other end ground connection, the fault-signal conversion circuit include input Fault-T, Fault-B, magnetic bead
FB3, FB4, resistance R62, R63, R64, R65, R66, R67, R68, R69, capacitor C91, C92, C104, C105, C106, C107 and
Electrical level transferring chip U5, input Fault-T are electrically connected with one end of magnetic bead FB3, and the magnetic bead FB3 other end is respectively with resistance R63's
One end and the electrical connection of one end of resistance R64, another termination+5V power supply of resistance R63, the resistance R64 other end turn with level respectively
The 7th pin for changing chip U5 is connected with one end of capacitor C105, and capacitor C105 other end ground connection inputs Fault-B and magnetic bead
One end of FB4 is electrically connected, and the magnetic bead FB4 other end is connected with one end of one end of resistance R62 and resistance R67 respectively, resistance R62's
Another termination+5V power supply, the resistance R67 other end respectively with the 6th pin of electrical level transferring chip U5 and one end phase of capacitor C104
Even, capacitor C104 other end ground connection, the 5th pin ground connection of electrical level transferring chip U5, the 8th pin connect+5V power supply, the 8th pin
One end of capacitor C91, capacitor C91 other end ground connection are connected to+5V power connection points, the first pin of electrical level transferring chip U5 connects
+ 3.3V power supply, the first pin and+3.3V power connection points are connected to one end of capacitor C92, capacitor C92 other end ground connection, and level turns
The second pin for changing chip U5 is electrically connected with one end of resistance R65, the resistance R65 other end respectively with one end of resistance R68, capacitor
One end of C106 and the 37th pin electrical connection of CPLD chip, the other end and the capacitor C106 other end of resistance R68 are grounded,
The third pin of electrical level transferring chip U5 is electrically connected with one end of resistance R66, the resistance R66 other end respectively with resistance R69 one
The 38th pin electrical connection at end, one end of capacitor C107 and CPLD chip, the other end and capacitor C107 of resistance R69 are another
End ground connection, the 4th pin ground connection of electrical level transferring chip U5.
2. a kind of motor of electric motor car controller hardware guard method based on CPLD, using electric vehicle described in claim 1
With electric machine controller hardware protection circuit, it is characterized in that: the following steps are included:
S1:CPLD carries out crash detection；
S2: if detecting deadlock, deadlock processing is carried out；If not detecting deadlock, overcurrent event is carried out
Barrier and over-voltage fault detection and processing；
S3: after the completion of deadlock processing or over current fault and over-voltage fault detection and processing, the open circuit output of six phases is carried out；
S4: carrying out crash detection again, and the open circuit output of six phases is persistently carried out if still having deadlock, if without deadlock,
Restore the normal output state of PWM, restarts S1 step.
3. the motor of electric motor car controller hardware guard method according to claim 2 based on CPLD, it is characterized in that: institute
State deadlock processing the following steps are included:
S01:CPLD chip exports crash status signal and cpu reset signal outward；
S02: control pwm signal carries out the open circuit output of six phases；
S03: bridge arm fault detection and processing are carried out；
S04: deadlock processing is completed.
4. the motor of electric motor car controller hardware guard method according to claim 3 based on CPLD, it is characterized in that: institute
The bridge arm fault detection and processing stated the following steps are included:
S11: detection upper and lower bridge arm malfunction；
S12: upper bridge three-phase shortcircuit is carried out if lower bridge failure；It is short that lower bridge three-phase is carried out if upper bridge failure or without bridge arm failure
Road；It is not processed if the equal failure of upper and lower bridge；
S13: bridge arm fault detection and processing are completed.
5. the motor of electric motor car controller hardware guard method according to claim 4 based on CPLD, it is characterized in that: institute
State over current fault and over-voltage fault detection and processing the following steps are included:
S21: the state that do not crash is exported；
S22: overcurrent and over-voltage signal detection are carried out if not detecting overcurrent-overvoltage signal and restarts S1 step；If inspection
Overcurrent-overvoltage signal is measured, then detects whether CPU actively initiates three-phase shortcircuit operation；
S23: if not CPU is actively initiated, then six phase open circuits is first carried out and carry out revolving speed judgement again；If CPU is actively initiated, then directly
Tap into the judgement of row revolving speed；
S24: if detection revolving speed is high speed, bridge arm fault detection and processing are carried out；If detection revolving speed is low speed, does not do and locate
Reason；
S25: other fault detections and processing are completed.
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| CN201810490271.8A CN108649534B (en) | 2018-05-21 | 2018-05-21 | A kind of motor of electric motor car controller hardware protection circuit and method based on CPLD |
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| CN111106788B (en) * | 2018-10-26 | 2022-02-25 | 上海汽车集团股份有限公司 | Active short-circuit protection system of motor |
| CN110380386B (en) * | 2019-06-14 | 2021-06-08 | 浙江零跑科技有限公司 | Electric seat controller with protection function and control method thereof |
| CN112751521A (en) * | 2020-12-31 | 2021-05-04 | 安徽工程大学 | Controller system applied to motor |
| CN114401463B (en) * | 2021-12-31 | 2024-03-29 | 广州芯德通信科技股份有限公司 | Method and device for reducing clock component port radiation of OLT (optical line terminal) equipment |
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| CN201909983U (en) * | 2010-11-30 | 2011-07-27 | 中国汽车技术研究中心 | CPLD-based fault treatment device for motor system of electric automobile |
| US10447195B2 (en) * | 2013-07-23 | 2019-10-15 | Atieva, Inc. | Electric vehicle motor torque safety monitor |
| CN105244846A (en) * | 2015-11-13 | 2016-01-13 | 清华大学 | Overcurrent protection system of motor controller of electric vehicle |
| CN208399937U (en) * | 2018-05-21 | 2019-01-18 | 浙江零跑科技有限公司 | A kind of motor of electric motor car controller hardware protection circuit based on CPLD |
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