CN215728667U - Motor traction transmission test bed system - Google Patents
Motor traction transmission test bed system Download PDFInfo
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- CN215728667U CN215728667U CN202122035028.7U CN202122035028U CN215728667U CN 215728667 U CN215728667 U CN 215728667U CN 202122035028 U CN202122035028 U CN 202122035028U CN 215728667 U CN215728667 U CN 215728667U
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Abstract
The utility model relates to a motor traction transmission test bed system, which comprises a high-voltage isolation switch cabinet isolation protection and a high-voltage alternating current output device, wherein the high-voltage isolation switch cabinet isolation protection is used for isolating and outputting the high-voltage alternating current; the first transformer converts the input high-voltage alternating current into low-voltage alternating current; the first rectifier converts low-voltage alternating current into low-voltage direct current, and the chopper regulates direct current voltage; the inverter converts the direct current into alternating current with frequency and voltage required by the motor to be tested; the motor to be tested operates to drive the loading device on the test system surface to work; the rotating speed and torque sensor detects the torque of the output shaft of the motor to be detected; the high-voltage isolation switch cabinet, the first transformer, the first rectifier, the chopper, the inverter, the motor to be tested, the rotating speed and torque sensor and the loading device are sequentially connected to form a loop. The high-voltage isolation switch cabinet, the chopper and the inverter are arranged to meet the requirements of various functional tests, and the loop in the application can run in the positive direction and the negative direction, has the same performance and precision, and saves energy and cost.
Description
Technical Field
The utility model belongs to the technical field of testing, and particularly relates to a traction drive test bed system of a motor.
Background
The motor test system is a test system aiming at improving the energy efficiency of a motor, saving energy and reducing emission, standardizes and instrumentalizes a complex system, improves the reliability of the system, simplifies the installation and debugging process, integrates a distributed measurement and control system based on an optical fiber bus with the powerful computing capability of a computer, realizes the process control and test data processing of the whole test through software, and has the characteristics of test data accuracy, system reliability, system flexibility, diversified test data processing modes, test process automation and the like.
In the related art, a motor test system can only test a motor to be tested, and has the problems of high power consumption and single test function.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention is directed to overcome the defects in the prior art, and provides a motor traction drive test bed system to solve the problems that the existing test can only be performed on a motor to be tested, the power consumption is large, and the test function which can be completed is single.
In order to realize the above purpose, the utility model adopts the following technical scheme: an electric motor traction drive test stand system comprising:
the high-voltage isolation switch cabinet is used for isolation protection and outputting high-voltage alternating current;
a first transformer for converting an input high-voltage alternating current into a low-voltage alternating current;
a first rectifier for converting the low-voltage AC power into a low-voltage DC power
A chopper for regulating the DC voltage;
the inverter is used for converting the direct current into alternating current with the frequency and the voltage required by the motor to be tested;
the motor to be tested is used for operating and driving the loading device on the test system surface to work;
the rotating speed torque sensor is used for detecting the torque of the output shaft of the motor to be detected;
the loading device is used for loading different frequencies of the motor to be tested;
the high-voltage isolation switch cabinet, the first transformer, the first rectifier, the chopper, the inverter, the motor to be tested, the rotating speed and torque sensor and the loading device are sequentially connected to form a loop.
Further, the loading device includes:
the test-accompanying speed increasing box, the test-accompanying direct current motor, the second rectifier and the second transformer are arranged in the transformer;
the test accompanying speed increasing box is used for generating mechanical energy by rotating under the driving of the motor to be tested;
the test-accompanying direct current motor is used for converting mechanical energy generated by the test-accompanying speed increasing box into direct current;
the second rectifier is used for converting the direct current into alternating current;
the second transformer is used for boosting voltage;
a transmission shaft on one side of the test accompanying speed increasing box is connected with the rotating speed and torque sensor, and the other side of the test accompanying speed increasing box is sequentially connected with the test accompanying direct current motor, the second rectifier and the second transformer.
Further, the method also comprises the following steps:
and the input end of the filter is connected with the first transformer, and the other end of the filter is connected with the first rectifier.
Further, the method also comprises the following steps:
the voltage sensor is used for detecting the voltage of the input end of the motor to be detected;
the current sensor is used for detecting the current of the input end of the motor to be detected;
and the temperature sensor is used for detecting the temperature of the motor to be detected.
Further, the display is used for displaying the test data of the motor to be tested;
the test data includes: the torque, the rotating speed and the power of the output end of the motor to be tested, and the voltage, the current, the frequency and the power of the input end of the motor to be tested and the temperature of the motor.
Further, the method also comprises the following steps:
the fault self-detection module and the alarm are arranged;
the fault self-detection module is used for detecting the loop and sending a signal to the alarm to give an alarm when a fault is detected.
Further, the method also comprises the following steps:
and the emergency stop buttons are used for controlling the relay to power off the loop after receiving the emergency stop signal.
Further, the method also comprises the following steps:
a UPS power supply.
By adopting the technical scheme, the utility model can achieve the following beneficial effects:
the motor traction transmission test bed system provided by the embodiment of the application comprises a high-voltage isolation switch cabinet, a high-voltage isolation switch cabinet and a high-voltage alternating current output module, wherein the high-voltage isolation switch cabinet is used for isolation protection and output of high-voltage alternating current; the first transformer converts the input high-voltage alternating current into low-voltage alternating current; the first rectifier converts the low-voltage alternating current into low-voltage direct current, and the chopper regulates the direct current voltage; the inverter converts the direct current into alternating current with frequency and voltage required by the motor to be tested; the motor to be tested operates to drive the loading device on the test system surface to work; the rotating speed and torque sensor detects the torque of the output shaft of the motor to be detected; the loading device loads different frequencies of the motor to be tested; the high-voltage isolation switch cabinet, the transformer, the rectifier, the chopper, the inverter, the motor to be tested, the rotating speed and torque sensor and the loading device are sequentially connected to form a loop. The high-voltage isolation switch cabinet, the chopper and the inverter are arranged to meet the requirements of various functional tests, the requirements of two motors of YQ-568 and YQ-587 can be met, and the tests comprise idling, locked rotor, temperature rise and characteristic tests, wherein the temperature rise tests comprise two working conditions of a sine wave power supply temperature rise test and an inverter power supply temperature rise test, and the characteristic tests comprise two working conditions of traction and braking.
In addition, the motor traction transmission test bed system has an independent display interface, displays monitoring signals such as voltage, current, temperature and the like of key components of the system, can record the running state in real time, can detect the fault state in real time, and gives an alarm when finding the fault.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a traction drive test bed system for an electric motor according to the present invention;
fig. 2 is a circuit configuration diagram of an inverter provided in the present invention;
FIG. 3 is a diagram of the forward energy conversion of a motor traction drive test stand system of the present invention;
FIG. 4 is a reverse energy conversion diagram of a motor traction drive test stand system of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
A specific motor traction drive test stand system provided in an embodiment of the present application will now be described with reference to the accompanying drawings.
As shown in fig. 1, the present invention provides a motor traction drive test stand system, comprising:
a high-voltage isolation switch cabinet (not shown in the figure) for isolation protection and outputting high-voltage alternating current;
a first transformer 1 for converting an input high-voltage alternating current into a low-voltage alternating current;
a first rectifier 2 for converting the low-voltage alternating current into a low-voltage direct current
A chopper 3 for adjusting a direct current voltage;
the inverter 4 is used for converting the direct current into alternating current with the frequency and the voltage required by the motor 5 to be tested;
the motor 5 to be tested is used for operating and driving the loading device 7 on the test system surface to work;
the rotating speed and torque sensor 6 is used for detecting the torque of the output shaft of the motor 5 to be detected;
the loading device 7 is used for loading different frequencies of the motor 5 to be tested;
the high-voltage isolation switch cabinet, the first transformer 1, the first rectifier 2, the chopper 3, the inverter 4, the motor 5 to be tested, the rotating speed and torque sensor 6 and the loading device 7 are sequentially connected to form a loop.
The application provides a theory of operation of motor traction drive test bench system is, system front end 10kV alternating current power supply, carry for first transformer 1T1 after the protection of high-voltage isolation switch cabinet, first transformer 1T1 invariable output 1100V alternating current exports 1700V DC power supply through first rectifier 2, chopper 3 adjusts 1700V DC power supply, the output provides DC2700 ~ 3600V's power supply for inverter 4U4, after the contravariant of inverter 4U4, for test system await measuring motor 5 provides frequency, voltage adjustable drive power supply. The motor 5 to be tested operates according to the output frequency of the inverter 4 to drive the loading device 7 on the test system surface to work, and the rotating speed and torque sensor 6 detects the torque of the output shaft of the motor 5 to be tested. The high-voltage isolation switch cabinet, the transformer, the rectifier, the chopper 3, the inverter 4, the motor 5 to be tested, the rotating speed and torque sensor 6 and the loading device 7 are sequentially connected to form a loop.
Specifically, the chopper 3 provided in the present application needs to keep the intermediate DC bus loop voltage at DC 2700V-3600V, so that the voltage output by the inverter 4 to the motor 5 to be tested can be guaranteed to reach the rated voltage, i.e., AC 2100V-2800V, and therefore, in the present application, the output voltage (DC1700V) of the four-quadrant rectifier is boosted to DC 2700V-3600V by the chopper 3, thereby meeting the requirement of the supply voltage at the front end of the inverter 4.
The rectifier that provides in this application is the four-quadrant rectifier, converts alternating current into direct current, and its output direct current busbar voltage is adjustable, and when the motor 5 that awaits measuring was as the load, this rectifier can convert direct current into alternating current, with the electric quantity repayment to the electric wire netting. The four-quadrant rectifier is mainly provided with a high-power IGBT rectifying unit, a high-power supporting capacitor, a current and voltage sensor and the like, and the cooling mode adopts water cooling heat dissipation. The four-quadrant rectifier that adopts in this application can not only eliminate higher harmonic, improves power factor, does not receive the undulant influence of electric wire netting moreover, has outstanding dynamic characteristic. In power control, it provides as stable and reliable performance as DTC technology in motor control.
A main circuit diagram of the inverter 4 adopted in the present application is shown in fig. 2, and mainly includes an IGBT inverter unit, an inverter controller, a sensor, a capacitor, an inductor, and other related auxiliary electrical appliances. The inverter 4 can conveniently carry out voltage regulation and frequency modulation control, and is suitable for factory tests and type tests of the alternating current asynchronous motor.
Preferably, the loading device 7 comprises:
an accompanying test speed increasing box 71, an accompanying test direct current motor 72, a second rectifier 73 and a second transformer 74;
the test-accompanying speed increasing box 71 is used for generating mechanical energy by rotating under the driving of the motor 5 to be tested;
the test-accompanying direct current motor 72 is used for converting mechanical energy generated by the test-accompanying speed increasing box 71 into direct current;
the second rectifier 73 is used for converting the direct current into alternating current;
the second transformer 74 is used for boosting the voltage;
a transmission shaft at one side of the test accompanying speed increasing box 71 is connected with the rotating speed and torque sensor 6, and the other side of the test accompanying speed increasing box is sequentially connected with a test accompanying direct current motor 72, a second rectifier 73 and a second transformer 74.
Preferably, the method further comprises the following steps:
and the input end of the filter is connected with the first transformer 1, and the other end of the filter is connected with the first rectifier 2.
Specifically, in the loop formed in the application, the motor 5 to be measured can be used as a driving motor and a load motor.
The energy conversion diagram is shown in fig. 3. The motor 5 to be tested is used as a driving motor: electric energy led out by a power supply grid is converted into mechanical energy by a motor 5 to be tested after passing through a transformer, a rectifier, a chopper 3 and an inverter 4, the mechanical energy is transmitted to an accompanying test direct current motor 72 through an accompanying test speed increasing box 71, and the mechanical energy is converted into direct current electric energy which is fed back to the alternating current side of the power supply grid through the existing system of the original test system.
When the motor 5 to be tested is used as a driving motor and the accompanying DC motor 72 is used as a load motor, the working principle is as follows:
the direct current power supply of the DC1700V is subjected to smoothing treatment and then is supplied to the direct current chopper 3, a power supply of DC 2700-3600V is provided for the inverter 4U4, and after inversion is carried out by the inverter 4U4, a driving power supply with adjustable frequency and voltage is provided for the motor 5 to be tested of the test system and is used as a driving part of the test system. The driving power supply drives the alternating current motor to be tested 5 to operate and drives the loading device 7 on the test system surface to operate.
The electric energy generated by the accompanying direct current motor 72 is converted into alternating current by the second rectifier 73, and then is returned to the 10kV alternating current side of the system after being boosted and transformed by the second transformer 74, and then is supplied to the inverter 4. The output of the motor 5 to be tested and the output of the accompanying direct current motor 72 are intersected after a 10kV alternating current circuit to form electric energy for recycling, and the power grid only needs to supplement system loss.
When the accompanying DC motor 72 is used as a driving motor, and the motor 5 to be tested is used as a load motor, the working principle is as follows:
the DC power supply of the DC1700V is directly supplied to the inverter 4U3, is supplied to the multi-tap transformer after being filtered, and is connected to the terminal of the motor 5 to be tested through the selector switch, so as to provide a load for the motor 5 to be tested of the test system. The loading device 7 is used as a driving unit for driving the test-accompanying direct current motor 72 to operate, and driving the test-accompanying speed increasing box 71 and the rotating speed torque sensor 6 on the test system surface to operate.
The inverter 4U3 drives the motor 5 to be tested, loads with different proportions are applied to a tested piece, the motor 72 is tested to work in a power generation state, the generated electric energy is rectified and filtered by a PWM four-quadrant to output 1100V alternating current, and the alternating current is boosted by the booster transformer to output 10kV alternating current to be fed back to a power grid.
Therefore, the power grid is only required to provide energy required by system electrical loss and mechanical friction loss, and a large-power test can be completed with less power grid energy.
The energy conversion diagram is shown in fig. 4. The motor 5 to be tested is used as a load motor, the existing system of the original test system is supplied with electricity from a power grid and used as a driving system, a direct current motor is driven to operate, electric energy is converted into mechanical energy, the mechanical energy is transmitted to the motor 5 to be tested through the accompanying test speed increasing box 71, and the mechanical energy is converted into alternating current which is converted into alternating current electric energy through the multi-tap transformer, the inverter 4, the rectifying unit and the transformer and fed back to the alternating current side of the power grid. Wherein, the transformer that takes a percentage more is just for on the former test bench, and this application is no longer repeated.
The application provides a motor traction transmission test bench system, but two positive and negative directions operation to have the same performance and precision.
In some embodiments, the present application provides a motor traction drive test stand system further comprising:
the voltage sensor is used for detecting the voltage of the input end of the motor 5 to be detected;
the current sensor is used for detecting the current of the input end of the motor 5 to be detected;
and the temperature sensor is used for detecting the temperature of the motor 5 to be detected.
It is understood that other sensors may be provided, and the present application is not described herein.
In some implementations, further comprising:
the display is used for displaying the test data of the motor 5 to be tested;
the test data includes: the torque, the rotating speed and the power of the output end of the motor 5 to be tested, and the voltage, the current, the frequency and the power of the input end of the motor 5 to be tested and the temperature of the motor.
The system has an independent monitoring display interface, displays monitoring signals such as voltage, current, temperature and the like of key components of the system, and can record the running state in real time.
In some embodiments, further comprising:
the fault self-detection module and the alarm are arranged;
the fault self-detection module is used for detecting the loop and sending a signal to the alarm to give an alarm when a fault is detected.
The system provided by the application has the functions of over-limit alarm and protection such as overvoltage, undervoltage, overcurrent, overload, short circuit, overtemperature, phase loss and the like. Specifically, the test bed has a self-checking function when being started, and a user sets parameter checking, state detecting and fault diagnosis functions, so that the test bed can give an alarm in time when a fault is found, and simultaneously records fault conditions and operation suggestions, and when a serious fault occurs, the system is automatically stopped or not started, and the reason for stopping the system is recorded.
Preferably, the method further comprises the following steps:
and the emergency stop buttons are used for controlling the relay to power off the loop after receiving the emergency stop signal.
The system is provided with an emergency stop button, and a loop can be closed in time. The test bed is provided with a plurality of emergency stop buttons, so that when a fault occurs at any time, the test bed can be subjected to emergency stop and fault removal with the aid of a monitoring and diagnosing program, and the safe operation of the test bed is guaranteed.
Preferably, the method further comprises the following steps:
a UPS power supply. The UPS serves as a power supply and has the function of protecting the external sudden power failure.
Under the condition that the main circuit is suddenly powered off, the test bed can ensure continuous power supply of the control system through the UPS, realize corresponding protection operation, ensure personal safety and equipment safety, and record fault information.
The voltage regulating range of the inverter 4 is 2100-3600V.
Adopt the water-cooling cabinet to provide the condition for the test bench heat dissipation in this application, the radiating power is 80kW, and structural style is the water-cooling heat dissipation, is equipped with the pump that supplies water circulation in the cabinet, and the exchange board dispels the heat through the exchange of interior water and outer water for the temperature difference range is allowed in the temperature decline equipment in order to supply the heat dissipation.
The system provided by the application can meet the requirements of two motors of YQ-568 and YQ-587, and the requirements of tests including idling, locked rotor, temperature rise and characteristic tests are met, wherein the temperature rise tests comprise two working conditions of sine wave power supply temperature rise tests and inverter 4 power supply temperature rise tests, and the characteristic tests comprise two working conditions of traction and braking.
In summary, the motor traction transmission test bed system provided by the utility model meets the requirements of various functional tests by arranging the high-voltage isolating switch cabinet, the chopper and the inverter, can meet the requirements of two motors of YQ-568 and YQ-587, and meets the requirements of tests including idling, locked rotor, temperature rise and characteristic tests, wherein the temperature rise tests comprise two working conditions of a sine wave power supply temperature rise test and an inverter power supply temperature rise test, and the characteristic tests comprise two working conditions of traction and braking. In addition, the motor traction transmission test bed system has an independent display interface, displays monitoring signals such as voltage, current, temperature and the like of key components of the system, can record the running state in real time, can detect the fault state in real time, and gives an alarm when finding the fault.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (9)
1. An electric motor traction drive test bed system, comprising:
the high-voltage isolation switch cabinet is used for isolation protection and outputting high-voltage alternating current;
a first transformer for converting an input high-voltage alternating current into a low-voltage alternating current;
a first rectifier for converting the low-voltage AC power into a low-voltage DC power
A chopper for regulating the DC voltage;
the inverter is used for converting the direct current into alternating current with the frequency and the voltage required by the motor to be tested;
the motor to be tested is used for operating and driving the loading device on the test system surface to work;
the rotating speed torque sensor is used for detecting the torque of the output shaft of the motor to be detected;
the loading device is used for loading different frequencies of the motor to be tested;
the high-voltage isolation switch cabinet, the first transformer, the first rectifier, the chopper, the inverter, the motor to be tested, the rotating speed and torque sensor and the loading device are sequentially connected to form a loop.
2. The motor traction drive test stand system of claim 1, wherein the loading device comprises:
the test-accompanying speed increasing box, the test-accompanying direct current motor, the second rectifier and the second transformer are arranged in the transformer;
the test accompanying speed increasing box is used for generating mechanical energy by rotating under the driving of the motor to be tested;
the test-accompanying direct current motor is used for converting mechanical energy generated by the test-accompanying speed increasing box into direct current;
the second rectifier is used for converting the direct current into alternating current;
the second transformer is used for boosting voltage;
a transmission shaft on one side of the test accompanying speed increasing box is connected with the rotating speed and torque sensor, and the other side of the test accompanying speed increasing box is sequentially connected with the test accompanying direct current motor, the second rectifier and the second transformer.
3. The motor traction drive test stand system of claim 1, further comprising:
and the input end of the filter is connected with the first transformer, and the other end of the filter is connected with the first rectifier.
4. The motor traction drive test stand system of claim 1, further comprising:
the voltage sensor is used for detecting the voltage of the input end of the motor to be detected;
the current sensor is used for detecting the current of the input end of the motor to be detected;
and the temperature sensor is used for detecting the temperature of the motor to be detected.
5. The motor traction drive test stand system of claim 4, further comprising:
the display is used for displaying the test data of the motor to be tested;
the test data includes: the torque, the rotating speed and the power of the output end of the motor to be tested, and the voltage, the current, the frequency and the power of the input end of the motor to be tested and the temperature of the motor.
6. The motor traction drive test stand system of claim 1, further comprising:
the fault self-detection module and the alarm are arranged;
the fault self-detection module is used for detecting the loop and sending a signal to the alarm to give an alarm when a fault is detected.
7. The motor traction drive test stand system of claim 1, further comprising:
and the emergency stop buttons are used for controlling the relay to power off the loop after receiving the emergency stop signal.
8. The electric motor traction drive test bed system according to any one of claims 1 to 7, further comprising:
a UPS power supply.
9. The motor traction drive test stand system of claim 8,
the range of the voltage regulated by the inverter is 2100-3600V.
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| CN202122035028.7U CN215728667U (en) | 2021-08-26 | 2021-08-26 | Motor traction transmission test bed system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116735054A (en) * | 2023-05-18 | 2023-09-12 | 湘潭恒欣实业股份有限公司 | An online monitoring method and system for monorail crane traction force |
| CN119471161A (en) * | 2025-01-08 | 2025-02-18 | 山东天瑞重工有限公司 | A motor driver test system and control method thereof |
-
2021
- 2021-08-26 CN CN202122035028.7U patent/CN215728667U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116735054A (en) * | 2023-05-18 | 2023-09-12 | 湘潭恒欣实业股份有限公司 | An online monitoring method and system for monorail crane traction force |
| CN119471161A (en) * | 2025-01-08 | 2025-02-18 | 山东天瑞重工有限公司 | A motor driver test system and control method thereof |
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