Motor test special power supply capable of absorbing back electromotive force

Abstract

The utility model belongs to the technical field of motor test power supplies, and particularly relates to a motor test special power supply capable of absorbing back electromotive force. A motor test special power supply capable of absorbing back electromotive force is characterized by comprising a transformer, a rectification circuit, a filter circuit, a voltage stabilizing circuit and a back electromotive force absorption circuit. The back electromotive force absorption circuit comprises an absorption capacitor, a current-limiting resistor, an anti-backflow diode and a voltage-regulating potentiometer. According to the special power supply for the motor test, the back electromotive force absorption circuit is additionally arranged in the power supply, so that the back electromotive force generated by the motor can be absorbed in time in the motor test process, the influence of the back electromotive force on the stability of the test process and the reliability of the test result is avoided, and meanwhile, the adverse influence on the test power supply can be avoided.

Description

Technical Field

[0001] The present application belongs to the technical field of motor test power supplies, and in particular relates to a motor test-specific power supply capable of absorbing back electromotive force. Background Art

[0002] When using a test power supply to perform motor performance tests, such as burn-in tests, a back EMF is generated in the motor. This back EMF opposes the test voltage applied to the rotating motor. This not only affects the stability and reliability of the motor test results but can also affect the test power supply, potentially damaging or even destroying it. Utility Model Content

[0003] In view of this, the present application provides a motor test-specific power supply capable of absorbing back electromotive force to solve all or part of the technical problems described in the background technology section of the present application.

[0004] The technical solutions adopted by this application to solve its technical problems are:

[0005] A power supply dedicated to motor testing capable of absorbing back electromotive force comprises a transformer, a rectifier circuit, a filter circuit, a voltage stabilizing circuit and a back electromotive force absorption circuit; the absorption circuit is used for absorbing the back electromotive force generated by the motor.

[0006] Preferably, the back electromotive force absorption circuit includes an absorption capacitor, a current limiting resistor, an anti-backflow diode, and a voltage regulating potentiometer; the absorption capacitor is used to convert the reverse electromotive force into electrical energy and store the electrical energy, the current limiting resistor is used to limit the charging current of the absorption capacitor, the anti-backflow diode is used to prevent the current from flowing back into the power supply, and the voltage regulating potentiometer is used to adjust the voltage of the absorption capacitor.

[0007] Preferably, the motor test-specific power supply capable of absorbing back electromotive force further includes a controller, which is used to provide system control functions.

[0008] Preferably, the motor test power supply capable of absorbing back electromotive force further comprises a sensor detection module for detecting operating parameters of the test power supply and the back electromotive force absorption circuit.

[0009] Preferably, the motor test-specific power supply capable of absorbing back electromotive force further comprises a motor speed monitoring module, which is used to monitor the real-time speed of the motor and transmit the detected data to the controller.

[0010] Preferably, the motor test-specific power supply capable of absorbing back electromotive force further comprises a motor temperature monitoring module, which is used to monitor the real-time temperature of the motor and transmit the detected data to the controller.

[0011] Preferably, the motor test-specific power supply capable of absorbing back electromotive force further includes a communication module, which is used to provide a data sharing and transmission function.

[0012] Preferably, the motor test-specific power supply capable of absorbing back electromotive force further includes a display module for displaying real-time parameters of the power supply operation.

[0013] Beneficial technical effects:

[0014] The dedicated power supply for motor testing disclosed in the present application can absorb the reverse electromotive force generated by the motor in a timely manner during the motor testing process by adding a reverse electromotive force absorption circuit in the power supply, thereby preventing the reverse electromotive force from affecting the stability of the testing process and the reliability of the test results, and at the same time preventing the reverse electromotive force from having an adverse effect on the test power supply.

[0015] The technical solutions and technical effects of this application are described in detail below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 : Schematic diagram of the structure of a special power supply for motor testing that can absorb back electromotive force. DETAILED DESCRIPTION

[0017] See also Figure 1 The power supply for motor testing capable of absorbing back EMF disclosed in this application includes a test power supply and a back EMF absorption circuit. The test power supply includes a transformer, a rectifier circuit, a filter circuit, and a voltage regulator circuit; the back EMF absorption circuit includes an absorption capacitor, a current-limiting resistor, a backflow prevention diode, and a voltage regulator potentiometer.

[0018] in:

[0019] The transformer is used to complete the voltage conversion function, and the rectifier circuit, filter circuit, and voltage stabilization circuit are used to complete the rectification, filtering, and voltage stabilization functions of the circuit respectively; the transformer, rectifier circuit, filter circuit, and voltage stabilization circuit can be various components or standard modules in the existing technology, and the circuit structure and connection are not described in detail here.

[0020] The snubber capacitor converts the reverse electromotive force into electrical energy and stores it. The current-limiting resistor limits the charging current of the snubber capacitor. The backflow prevention diode prevents reverse current from flowing into the power supply and conducts the charging circuit of the snubber capacitor. The voltage regulator potentiometer adjusts the voltage of the snubber capacitor. The capacitor, diode, resistor, and potentiometer can be various standard components or modules known in the art, and their composition and connection relationships are not detailed here.

[0021] In a variant embodiment, the motor test-specific power supply capable of absorbing back electromotive force further includes a controller. The controller is used to provide system control functions and can be various industrial control modules such as a micro industrial computer.

[0022] In one embodiment, the motor test power supply capable of absorbing back EMF also includes a sensor detection module. Sensors help improve the accuracy and reliability of motor testing. Commonly used sensors in motor testing include Hall sensors, torque sensors, digital temperature sensors, and magnetic sensors.

[0023] In a variant embodiment, the motor test-specific power supply capable of absorbing back electromotive force further includes a motor speed monitoring module, which is used to monitor the real-time speed of the motor and transmit the detected data to the controller.

[0024] In a variant embodiment, the motor test-specific power supply capable of absorbing back electromotive force further includes a motor temperature monitoring module, which is used to monitor the real-time temperature of the motor and transmit the detected data to the controller.

[0025] In a variant embodiment, the motor test-specific power supply capable of absorbing back electromotive force further includes a communication module, which is used to provide a shared data transmission function.

[0026] In a variant embodiment, the motor test power supply capable of absorbing back electromotive force further includes a display module. The display module is configured to display real-time parameters of the power supply operation. The display module may be a touch screen, etc.

[0027] Principle and effect description:

[0028] When using the dedicated motor test power supply disclosed in this application to test a motor, when a reverse electromotive force is generated within the motor, the backflow prevention diode can conduct and direct the reverse electromotive force to the absorption capacitor, while preventing the reverse electromotive force from flowing back into the test power supply and affecting the test power supply. Thus, the dedicated motor test power supply disclosed in this application, by adding a reverse electromotive force absorption circuit within the power supply, can promptly absorb the reverse electromotive force generated by the motor during the motor test, preventing the reverse electromotive force from affecting the stability of the test process and the reliability of the test results, while also preventing the reverse electromotive force from adversely affecting the test power supply.

[0029] The above describes the technical solution and technical effects of the present application in detail in combination with the drawings and specific embodiments of the specification. It should be noted that technicians in this field can also develop other embodiments on this basis; any simple deformation and equivalent substitution that does not deviate from the innovative concept of the present application are covered by the present application and fall within the scope of protection of this patent.

Claims

1. A power supply specifically designed for motor testing capable of absorbing back electromotive force, characterized by: It includes a transformer, a rectifier circuit, a filter circuit, a voltage stabilizing circuit, and a back electromotive force absorption circuit; the absorption circuit is used to absorb the back electromotive force generated by the motor.

2. The motor test-specific power supply capable of absorbing back electromotive force according to claim 1, characterized in that: The back electromotive force absorption circuit includes an absorption capacitor, a current limiting resistor, an anti-backflow diode, and a voltage regulating potentiometer; The absorption capacitor is used to convert the reverse electromotive force into electrical energy and store the electrical energy, the current limiting resistor is used to limit the charging current of the absorption capacitor, the anti-backflow diode is used to prevent the current from flowing back into the power supply, and the voltage regulating potentiometer is used to adjust the voltage of the absorption capacitor.

3. The motor test-specific power supply capable of absorbing back electromotive force according to claim 1, characterized in that: The dedicated power supply for motor testing capable of absorbing back electromotive force also includes a controller.

4. The motor test-specific power supply capable of absorbing back electromotive force according to claim 1, characterized in that: The motor test-specific power supply capable of absorbing back electromotive force also includes a sensor detection module.

5. The motor test-specific power supply capable of absorbing back electromotive force according to claim 1, characterized in that: The motor test-specific power supply capable of absorbing back electromotive force also includes a motor speed monitoring module.

6. The motor test-specific power supply capable of absorbing back electromotive force according to claim 1, characterized in that: The motor test-specific power supply capable of absorbing back electromotive force also includes a motor temperature monitoring module.

7. The motor test-specific power supply capable of absorbing back electromotive force according to claim 1, characterized in that: The dedicated power supply for motor testing capable of absorbing back electromotive force also includes a communication module.

8. The motor test-specific power supply capable of absorbing back electromotive force according to claim 1, characterized in that: The special power supply for motor testing capable of absorbing back electromotive force also includes a display module.

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