CN110596587A - Motor pair drag durability test system and safety protection method thereof - Google Patents
Motor pair drag durability test system and safety protection method thereof Download PDFInfo
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- CN110596587A CN110596587A CN201910846128.2A CN201910846128A CN110596587A CN 110596587 A CN110596587 A CN 110596587A CN 201910846128 A CN201910846128 A CN 201910846128A CN 110596587 A CN110596587 A CN 110596587A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
- G01R31/343—Testing dynamo-electric machines in operation
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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
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- General Physics & Mathematics (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
The invention discloses a motor twin-dragging durability test system and a safety protection method thereof, wherein the motor twin-dragging durability test system comprises a three-phase alternating current motor to be tested, a motor controller to be tested, a durability test control terminal, a torque sensor, a rotating speed sensor and a vibration sensor; the device comprises a motor controller to be tested, an accompanying motor controller, an endurance test control terminal and a communication network, wherein the motor controller to be tested is used for controlling output torque of a motor to be tested, the accompanying motor controller is used for controlling output rotating speed of an accompanying motor, and three nodes of the motor controller to be tested, the accompanying motor controller and the endurance test control terminal are connected with the same communication network; the safety protection method of the motor drag endurance test system comprises accompany test end protection control, test end protection control and endurance test control terminal protection control. The three nodes are connected with the same communication network, so that any node can monitor the state information of the other two nodes in real time, and the other two nodes can rapidly enter the abnormal protection when any node is abnormal.
Description
Technical Field
The invention relates to the field of motor testing, in particular to a motor pair drag endurance testing system and a safety protection method thereof.
Background
The durability test of the driving motor of the new energy automobile is based on the running condition of the motor in the actual road condition, and an equivalent strengthening experiment is carried out to accelerate the aging of the motor. Unexpected accidents may occur in the aging process, and the safety protection of the motor durability test system is particularly important for avoiding casualties and economic losses caused by untimely protection when the accidents occur.
Patent document 1 (publication number: CN 206946305U) discloses a high-power motor controller output capability testing and aging device, which uses a reactor to replace a motor to test and age the output capability of a motor controller, thereby improving the safety of detection and aging and achieving the effects of energy conservation and emission reduction. The patent applied for the aging method of the controller in the solution of the document does not mention how the motor and the electric drive system age.
Patent document 2 (publication number: CN 103235261A) discloses a symmetric motor durability test system and a test method thereof, which only describes the structure of the symmetric motor durability test system and the test method, and does not mention how to perform safety protection.
The motor is to dragging durable system in trade and is mostly adopted and is monitored controller that awaits measuring and accompany and survey the controller by control terminal, and the mode that controller that awaits measuring does not monitor the other side's state with accompany and survey the controller promptly carries out safety protection, and this kind of protection mode needs control terminal to send the protection instruction for other one end when one end is unexpected, and the protection is rapid inadequately, can lose because of control terminal communication moreover and lead to the system out of control.
Disclosure of Invention
The invention aims to: the motor twin-dragging durability test system and the safety protection method thereof are provided, the mutual monitoring links of the controller to be tested and the accompanying test controller are added, the system can be protected quickly when an accident occurs, and the probability of system out of control caused by communication loss of any party is greatly reduced.
The technical scheme of the invention is as follows:
a motor counter-dragging durability test system comprises a three-phase alternating current motor to be tested, a motor controller to be tested, an accompanying three-phase alternating current motor, an accompanying motor controller, a durability test control terminal, a torque sensor, a rotating speed sensor and a vibration sensor; the device comprises a motor controller to be tested, an accompanying motor controller and a durability test control terminal, wherein three nodes of the motor controller to be tested, the accompanying motor controller and the durability test control terminal are connected with the same communication network; the three-phase alternating current motor to be tested and the rotating shaft of the accompanied three-phase alternating current motor are fixedly connected through a coupler, and the endurance test control terminal collects torque, rotating speed and vibration signals of the rotating shaft through a torque sensor, a rotating speed sensor and a vibration sensor.
A safety protection method for a motor drag endurance test system comprises an accompanying test end protection control, a to-be-tested end protection control and an endurance test control terminal protection control, wherein a to-be-tested motor controller, an accompanying test motor controller and an endurance test control terminal are connected to the same communication network, any node monitors state information of the other two nodes in real time, and the other two nodes enter abnormal protection when any node is abnormal.
Preferably, the protection control of the accompanying measuring terminal comprises the following steps:
a1, confirming that the condition of the three-phase alternating current motor accompanying the test is not abnormal, if a fault signal is detected, sending fault information to a durability test control terminal and a motor controller to be tested, and entering a protection mode;
a2, confirming that signals of the endurance test control terminal and a motor controller to be tested are updated all the time, namely, no communication loss occurs, if the communication loss occurs, controlling the accompanied and tested three-phase alternating current motor to enter a 0 rotating speed mode, and not responding to a rotating speed instruction sent by the endurance test control terminal any more;
a3, judging whether a fault signal is sent out by the motor controller to be tested, if the fault signal is sent out by the motor controller to be tested, controlling the three-phase alternating current motor to enter a 0 rotating speed mode by the motor controller to be tested, not responding to a rotating speed instruction sent out by the endurance test control terminal any more, and if the motor controller cannot enter the 0 rotating speed mode, immediately entering a protection mode.
Preferably, in steps a1 and A3, the fault signals include overvoltage, overcurrent, overtemperature and overspeed signals; and the protection mode is that the lower three bridges of the driving module are opened to enter an ASC protection mode and wait for the system to restart.
Preferably, in step a2, whether signal communication between the endurance test control terminal and the motor controller to be tested is lost or not is determined by comparing the received data counter value with the transmission data counter values sent by the endurance test control terminal and the motor controller to be tested, if the counter values are equal, it is determined that no communication loss occurs, and if the counter values are not equal, or if the received data counter and the transmission data counter values stop updating, it is determined that the system lost communication is in a runaway state.
Preferably, the protection control of the end to be measured includes the steps of:
b1, confirming that the three-phase alternating current motor to be tested is not abnormal, if a fault signal is detected, sending fault information to the endurance test control terminal and the accompanying motor controller, and entering a protection mode;
b2, confirming that signals of the endurance test control terminal and the accompanying motor controller are updated all the time, namely, no communication loss occurs, and if the communication loss occurs, controlling the three-phase alternating current motor to be tested to enter a 0-speed mode and not responding to a torque instruction sent by the endurance test control terminal any more;
and B3, judging whether a fault signal is sent out by the auxiliary motor controller, if the fault signal is sent out by the auxiliary motor controller, controlling the to-be-tested three-phase alternating current motor to enter a 0-torque mode by the to-be-tested motor controller, and not responding to a torque instruction sent out by the endurance test control terminal any more.
Preferably, in step B2, whether the signal communication between the endurance test control terminal and the testing-accompanying motor controller is lost or not is determined by comparing the value of the received data counter with the values of the transmitted data counters sent by the control terminal and the testing-accompanying controller, if the values of the counters are equal, it is determined that no communication loss occurs, and if the values of the counters are not equal, or the values of the received data counter and the transmitted data counter stop updating, it is determined that the communication lost system is in an out-of-control state.
Preferably, the protection control of the endurance test control terminal includes the steps of:
c1, collecting signals of a torque sensor, a rotating speed sensor and a vibration sensor, judging whether the running state of the motor twin-dragging endurance test system is normal or not, if the running state of the endurance test system is abnormal, immediately sending a 0-torque mode instruction to a motor controller to be tested by the endurance test control terminal, and sending a 0-rotating speed mode instruction to an accompanying test motor controller;
c2, confirming that signals of the motor controller to be tested and the accompanying motor controller are updated all the time, namely, no communication loss occurs, if the communication loss occurs, the endurance test control terminal immediately sends a 0-torque mode instruction to the motor controller to be tested and a 0-rotation speed mode instruction to the accompanying motor controller;
and C3, judging whether fault signals are sent out by the motor controller to be tested and the accompanying motor controller, if any node has a fault signal, immediately sending a 0-torque mode instruction to the motor controller to be tested and a 0-rotating speed mode instruction to the accompanying motor controller by the durable test control terminal.
Preferably, in step C2, whether signal communication between the motor controller to be tested and the testing-accompanying motor controller is lost or not is judged by comparing the value of the received data counter with the values of the transmitted data counters sent by the motor controller to be tested and the testing-accompanying motor controller, if the values of the counters are equal, no communication loss occurs, and if the values of the counters are not equal, or the values of the received data counter and the transmitted data counter stop updating, the system that communication has been lost is considered to be in an out-of-control state.
The invention has the advantages that:
according to the invention, the motor controller to be tested, the accompanying motor controller and the endurance test control terminal are connected to the same communication network, so that any node can monitor the state information of the other two nodes in real time, and the other two nodes can rapidly enter abnormal protection when any node is abnormal. The application proposal is safe and reliable, has a simple structure and is easy to realize, and the cost is not required to be additionally increased.
Drawings
The invention is further described with reference to the following figures and examples:
FIG. 1 is a schematic structural diagram of a motor pair drag endurance testing system according to the present invention;
FIG. 2 is a flow chart of the protection control of the accompanying terminal;
FIG. 3 is a flowchart of protection control of the terminal to be tested;
FIG. 4 is a flowchart of protection control of the endurance test control terminal.
Detailed Description
As shown in fig. 1, the motor pair-dragging durability test system of the present invention includes a three-phase ac motor to be tested, a motor controller to be tested, a durability test control terminal, a torque sensor, a rotation speed sensor, and a vibration sensor; the device comprises a motor controller to be tested, an accompanying motor controller and a durability test control terminal, wherein three nodes of the motor controller to be tested, the accompanying motor controller and the durability test control terminal are connected with the same communication network; the three-phase alternating current motor to be tested and the rotating shaft of the accompanied three-phase alternating current motor are fixedly connected through a coupler, and the endurance test control terminal collects torque, rotating speed and vibration signals of the rotating shaft through a torque sensor, a rotating speed sensor and a vibration sensor.
The motor controller to be tested, the accompanying motor controller and the endurance test control terminal are connected to the same communication network, so that any node can monitor the state information of the other two nodes in real time, and the other two nodes can rapidly enter abnormal protection when any node is abnormal. The safety protection method of the motor drag endurance test system comprises accompany test end protection control, test end protection control and endurance test control terminal protection control, which are respectively and specifically described below.
As shown in fig. 2, the protection control of the accompanied measuring terminal includes the steps of:
and A1, confirming that the three-phase alternating current motor is detected without abnormity, namely fault signals such as overvoltage, overcurrent, overtemperature, overspeed and the like are not detected. If a fault signal is detected, sending fault information to the endurance test control terminal and the motor controller to be tested, opening a three-bridge under the driving module to enter an asc protection mode to wait for restarting of the system, and if the fault signal is not detected, entering the next operation;
a2, confirming that signals of the endurance test control terminal and the motor controller to be tested are updated all the time, namely, no communication loss occurs, judging by comparing the value of a received data counter with the value of a sent data counter sent by the endurance test control terminal and the motor controller to be tested, and entering the next step if the counter values are equal, which indicates that no communication loss occurs; if the counter values are not equal or the values of the received data counter and the sent data counter stop updating, the communication lost system is considered to be in an out-of-control state, the test-accompanying three-phase alternating-current motor is controlled to enter a 0 rotating speed mode, and a rotating speed instruction sent by the endurance test control terminal is not responded;
a3, after confirming that the endurance test control terminal and the accompanying motor controller are not in communication loss, judging whether a fault signal is sent out by the motor controller to be tested, if the fault signal is sent out by the motor controller to be tested, controlling the accompanying three-phase alternating current motor to enter a 0 rotating speed mode by the accompanying motor controller, not responding to a rotating speed instruction sent out by the endurance test control terminal, and if the motor controller cannot enter the 0 rotating speed mode, immediately opening a driving module and then entering an ASC protection mode to wait for system restart.
As shown in fig. 3, the protection control of the terminal to be measured includes the steps of:
and B1, confirming that the system to be tested has no abnormal condition, namely, fault signals such as overvoltage, overcurrent, overtemperature, overspeed and the like are not detected. And if a fault signal is detected, sending fault information out to the control terminal and the accompanying control device, opening the three bridges under the driving module to enter an asc protection mode to wait for the system to restart, and if the fault signal is not detected, entering the next operation.
B2, confirming that signals of the control terminal and the accompanying controller are updated all the time, namely, no communication loss occurs, judging by comparing the value of a received data counter with the value of a sent data counter sent by the control terminal and the accompanying controller, and entering the next step if the counter values are equal, which indicates that no communication loss occurs. And if the counter values are not equal or the values of the received data counter and the sent data counter stop updating, the communication lost system is considered to be in a runaway state, and the motor to be tested is controlled to enter a 0-torque mode and no longer responds to a torque instruction sent by the control terminal.
B3, after the situation that communication loss does not occur in the control terminal and the accompanying controller is confirmed, whether a fault signal exists in the accompanying controller is judged, if the fault signal exists in the accompanying controller, the controller to be tested controls the accompanying motor to enter a 0-torque mode and does not respond to a torque command sent by the control terminal any more.
As shown in fig. 4, the protection control of the endurance test control terminal includes the steps of:
and C1, collecting signals of the torque sensor, the rotating speed sensor and the vibration sensor, and judging whether the running state of the endurance testing system is normal. And if the running state of the endurance test system is abnormal, the endurance test control terminal immediately sends a 0-torque mode instruction to the motor controller to be tested and a 0-rotating speed mode instruction to the motor controller to be tested. If the signals of the sensors are not abnormal, the next step is carried out;
and C2, confirming that signals of the controller to be tested and the accompanying controller are updated all the time, namely, no communication loss occurs, judging by comparing the value of the received data counter with the value of the sent data counter sent by the controller to be tested and the accompanying controller, and entering the next step if the counter values are equal, which indicates that no communication loss occurs. If the counter values are not equal or the receiving data counter and the sending data counter values stop updating, the communication lost system is considered to be in an out-of-control state, the endurance test control terminal immediately sends a 0-torque mode instruction to the motor controller to be tested and a 0-rotation speed mode instruction to the accompanying test motor controller;
and C3, after the situation that the communication loss does not occur in the controller to be tested and the accompanying controller is confirmed, whether a fault signal exists in the controller to be tested and the accompanying controller is sent out or not is judged, if any node has the fault signal, the durable test control terminal immediately sends a 0-torque mode instruction to the motor controller to be tested, and a 0-rotating-speed mode instruction to the accompanying motor controller.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All modifications made according to the spirit of the main technical scheme of the invention are covered in the protection scope of the invention.
Claims (9)
1. A motor counter-dragging durability test system is characterized by comprising a three-phase alternating current motor to be tested, a motor controller to be tested, an accompanying three-phase alternating current motor, an accompanying motor controller, a durability test control terminal, a torque sensor, a rotating speed sensor and a vibration sensor; the device comprises a motor controller to be tested, an accompanying motor controller and a durability test control terminal, wherein three nodes of the motor controller to be tested, the accompanying motor controller and the durability test control terminal are connected with the same communication network; the three-phase alternating current motor to be tested and the rotating shaft of the accompanied three-phase alternating current motor are fixedly connected through a coupler, and the endurance test control terminal collects torque, rotating speed and vibration signals of the rotating shaft through a torque sensor, a rotating speed sensor and a vibration sensor.
2. A safety protection method of a motor drag endurance test system is characterized by comprising an accompanying test end protection control, a to-be-tested end protection control and an endurance test control terminal protection control, wherein a to-be-tested motor controller, an accompanying test motor controller and an endurance test control terminal are connected to the same communication network, any node monitors state information of the other two nodes in real time, and the other two nodes enter abnormal protection when any node is abnormal.
3. The safety protection method for the motor pair-dragging endurance testing system according to claim 2, wherein the test accompanying end protection control includes the steps of:
a1, confirming that the condition of the three-phase alternating current motor accompanying the test is not abnormal, if a fault signal is detected, sending fault information to a durability test control terminal and a motor controller to be tested, and entering a protection mode;
a2, confirming that signals of the endurance test control terminal and a motor controller to be tested are updated all the time, namely, no communication loss occurs, if the communication loss occurs, controlling the accompanied and tested three-phase alternating current motor to enter a 0 rotating speed mode, and not responding to a rotating speed instruction sent by the endurance test control terminal any more;
a3, judging whether a fault signal is sent out by the motor controller to be tested, if the fault signal is sent out by the motor controller to be tested, controlling the three-phase alternating current motor to enter a 0 rotating speed mode by the motor controller to be tested, not responding to a rotating speed instruction sent out by the endurance test control terminal any more, and if the motor controller cannot enter the 0 rotating speed mode, immediately entering a protection mode.
4. The method for safeguarding a motor-driven durability test system according to claim 3, wherein the fault signals comprise over-voltage, over-current, over-temperature and over-speed signals in steps A1 and A3; and the protection mode is that the lower three bridges of the driving module are opened to enter an ASC protection mode and wait for the system to restart.
5. The safety protection method for motor pair-driven endurance test system according to claim 3, wherein in step a2, the endurance test control terminal and the motor controller under test are judged whether signal communication is lost by comparing the received data counter value with the transmission data counter value sent by the endurance test control terminal and the motor controller under test, if the counter values are equal, no communication loss occurs, and if the counter values are not equal, or the received data counter and the transmission data counter value stop updating, the communication lost system is considered to be in a runaway state.
6. The safety protection method for the motor pair drag endurance test system according to claim 2, wherein the protection control of the end to be tested includes the steps of:
b1, confirming that the three-phase alternating current motor to be tested is not abnormal, if a fault signal is detected, sending fault information to the endurance test control terminal and the accompanying motor controller, and entering a protection mode;
b2, confirming that signals of the endurance test control terminal and the accompanying motor controller are updated all the time, namely, no communication loss occurs, and if the communication loss occurs, controlling the three-phase alternating current motor to be tested to enter a 0-speed mode and not responding to a torque instruction sent by the endurance test control terminal any more;
and B3, judging whether a fault signal is sent out by the auxiliary motor controller, if the fault signal is sent out by the auxiliary motor controller, controlling the to-be-tested three-phase alternating current motor to enter a 0-torque mode by the to-be-tested motor controller, and not responding to a torque instruction sent out by the endurance test control terminal any more.
7. The safety protection method for the motor pair-driven endurance test system according to claim 6, wherein in step B2, the endurance test control terminal and the accompanied test motor controller are judged whether signal communication is lost by comparing the received data counter value with the transmitted data counter value sent by the control terminal and the accompanied test controller, if the counter values are equal, no communication loss occurs, and if the counter values are not equal, or the received data counter and the transmitted data counter value stop updating, the communication lost system is considered to be in a runaway state.
8. The safety protection method for the motor pair-dragging endurance test system according to claim 2, wherein the endurance test control terminal protection control comprises the steps of:
c1, collecting signals of a torque sensor, a rotating speed sensor and a vibration sensor, judging whether the running state of the motor twin-dragging endurance test system is normal or not, if the running state of the endurance test system is abnormal, immediately sending a 0-torque mode instruction to a motor controller to be tested by the endurance test control terminal, and sending a 0-rotating speed mode instruction to an accompanying test motor controller;
c2, confirming that signals of the motor controller to be tested and the accompanying motor controller are updated all the time, namely, no communication loss occurs, if the communication loss occurs, the endurance test control terminal immediately sends a 0-torque mode instruction to the motor controller to be tested and a 0-rotation speed mode instruction to the accompanying motor controller;
and C3, judging whether fault signals are sent out by the motor controller to be tested and the accompanying motor controller, if any node has a fault signal, immediately sending a 0-torque mode instruction to the motor controller to be tested and a 0-rotating speed mode instruction to the accompanying motor controller by the durable test control terminal.
9. The safety protection method for motor pair-driven endurance test system according to claim 8, wherein in step C2, whether signal communication between the motor controller under test and the motor controller under test is lost or not is judged by comparing the received data counter value with the sent data counter values sent by the motor controller under test and the motor controller under test, if the counter values are equal, no communication loss occurs, and if the counter values are not equal, or the received data counter and the sent data counter values stop updating, the system under communication loss is considered to be in a runaway state.
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| CN113138613A (en) * | 2021-04-13 | 2021-07-20 | 合肥巨一动力系统有限公司 | Method for reducing over-regulation of rotating speed of twin-dragging system |
| CN113721144A (en) * | 2021-08-30 | 2021-11-30 | 珠海泰芯半导体有限公司 | Motor aging test method and device, storage medium and electronic equipment |
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| CN113721144A (en) * | 2021-08-30 | 2021-11-30 | 珠海泰芯半导体有限公司 | Motor aging test method and device, storage medium and electronic equipment |
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| CN110596587B (en) | 2022-02-08 |
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