CN219625655U - Motor test device - Google Patents
Motor test device Download PDFInfo
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- CN219625655U CN219625655U CN202223426958.6U CN202223426958U CN219625655U CN 219625655 U CN219625655 U CN 219625655U CN 202223426958 U CN202223426958 U CN 202223426958U CN 219625655 U CN219625655 U CN 219625655U
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Abstract
The utility model relates to a motor test device, which comprises a test machine table, a motor to be tested and an execution motor; the motor to be tested is powered by the direct current bus of the motor to be tested, an output shaft of the motor to be tested is connected with one end of the dynamic torque sensor through the first coupler, the other end of the dynamic torque sensor is connected with an output shaft of the executing motor through the second coupler, and the compensation feedback of the output end of the direct current bus of the executing motor is connected to the power supply end of the direct current bus of the motor to be tested. The utility model recovers energy by the kinetic energy generated in the motor test process, compensates and feeds back the energy to the original power supply, thereby realizing energy conservation and environmental protection and reducing energy waste.
Description
[ field of technology ]
The utility model mainly relates to the technical field of motor tests, in particular to a motor test device.
[ background Art ]
The motor products equipped with the existing mechanical equipment are various, the test process of the motor is finished by adopting a test bed, and whether various indexes of the motor reach the design requirements is tested in the test process.
As shown in chinese patent (ZL 2021225874704), a common test stand is that a generator is connected to a mounting sleeve at its end by a transmission shaft, a coupling, and the like, and fan blades are disposed on the mounting sleeve. During testing, the generator is started to drive the fan blade executing component to work, and then various parameter performances in the working process of the generator are tested. In the testing process, the fan blade belongs to an energy consumption component, and kinetic energy generated by the motor can be finally consumed.
Because the types of the motors are different, the energy consumption components are configured differently according to different motors, and the universal motor is not provided. Meanwhile, kinetic energy generated in the motor testing process is only completely consumed by the executing component, and energy waste exists. The inventors therefore conceived a device that is capable of recycling this portion of energy, thereby producing this solution.
[ utility model ]
The utility model aims to provide a motor test device, which is used for recovering energy from kinetic energy generated in a motor test process, feeding back the energy back to an original power supply in a compensation way, so that the energy conservation and environmental protection are realized, the energy waste is reduced, and meanwhile, the energy consumption device is reduced.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
a motor test device comprises a test machine table, a motor to be tested and an execution motor; the motor to be tested is powered by the direct current bus of the motor to be tested, an output shaft of the motor to be tested is connected with one end of the dynamic torque sensor through the first coupler, the other end of the dynamic torque sensor is connected with an output shaft of the executing motor through the second coupler, and the compensation feedback of the output end of the direct current bus of the executing motor is connected to the power supply end of the direct current bus of the motor to be tested.
The motor to be tested is characterized in that a direct current bus power supply end of the motor to be tested is connected with a three-phase connection end of the motor to be tested through a triode, the triode is simultaneously connected with an output end of a motor switch module IGBT1 to be tested, and an input end of the motor switch module IGBT1 to be tested is connected with a motor control unit P1 to be tested.
The three-phase wiring terminal of the motor to be tested comprises a first winding wiring terminal U1, a second winding wiring terminal V1 and a third winding wiring terminal W1; an emitter of the first switching tube T1 is connected with a first winding terminal U1, an emitter of the second switching tube T2 is connected with a second winding terminal V1, and an emitter of the third switching tube T3 is connected with a third winding terminal W1; the collectors of the first switching tube T1, the second switching tube T2 and the third switching tube T3 are connected to the positive electrode of the direct current bus of the motor to be tested, and the bases of the first switching tube T1, the second switching tube T2 and the third switching tube T3 are respectively and independently connected to one output pin of the motor switch module IGBT1 to be tested.
The triode also comprises a fourth switching tube T4, a fifth switching tube T5 and a sixth switching tube T6, wherein the collector of the fourth switching tube T4 is connected with the first winding terminal U1, the collector of the fifth switching tube T5 is connected with the second winding terminal V1, the collector of the sixth switching tube T6 is connected with the third winding terminal W1, the emitters of the fourth switching tube T4, the fifth switching tube T5 and the sixth switching tube T6 are all connected to the negative electrode of a direct current bus of the motor to be tested, and the bases of the fourth switching tube T4, the fifth switching tube T5 and the sixth switching tube T6 are respectively and independently connected to one output pin of the motor switch module IGBT1 to be tested.
The executing motor is characterized in that the output end of a direct current bus of the executing motor is connected with the three-phase connection end of the direct current bus through a triode, the triode is simultaneously connected with the output end of an executing motor switch module IGBT2, and the input end of the executing motor switch module IGBT2 is connected with an executing motor control unit P2.
The three-phase wiring terminal of the execution motor comprises a first winding wiring terminal U2, a second winding wiring terminal V2 and a third winding wiring terminal W2; an emitter of the seventh switching tube T7 is connected with the second winding terminal U2, an emitter of the eighth switching tube T8 is connected with the second winding terminal V2, and an emitter of the ninth switching tube T9 is connected with the third winding terminal W3; the collectors of the seventh switching tube T7, the eighth switching tube T8 and the ninth switching tube T9 are all connected to the positive pole of the direct current bus of the execution motor, and the bases of the seventh switching tube T7, the eighth switching tube T8 and the ninth switching tube T9 are respectively and independently connected to one output pin of the IGBT2 of the execution motor.
The triode also comprises a tenth switching tube T10, an eleventh switching tube T11 and a twelfth switching tube T12, wherein a collector of the tenth switching tube T10 is connected with the first winding terminal U2, a collector of the eleventh switching tube T11 is connected with the second winding terminal V2, a collector of the twelfth switching tube T12 is connected with the third winding terminal W3, emitters of the tenth switching tube T10, the eleventh switching tube T11 and the twelfth switching tube T12 are connected to a negative electrode of a direct current bus of the executing motor, and bases of the tenth switching tube T10, the eleventh switching tube T11 and the twelfth switching tube T12 are respectively and independently connected to one output pin of the IGBT2 of the executing motor switching module.
The positive electrode of the executing motor direct current bus is connected with the positive electrode of the motor direct current bus to be tested, and the negative electrode of the executing motor direct current bus is connected with the negative electrode of the motor direct current bus to be tested, so that energy feedback is realized.
The triode is connected with a voltage-stabilizing diode, the positive electrode of the voltage-stabilizing diode is connected with the emitter of the triode, and the negative electrode of the voltage-stabilizing diode is connected with the collector of the triode.
And encoders are arranged on the motor to be tested and the executing motor.
Compared with the prior art, the utility model has the following beneficial effects:
according to the utility model, the execution motor with the same model as the motor to be tested is additionally arranged on the test bed, kinetic energy generated by the motor to be tested is converted into electric energy through the execution motor, and meanwhile, the electric energy is compensated and fed back to the original power supply end through the designed control circuit. Therefore, most of the power supply energy of the motor to be tested is circularly compensated in a form of re-generating, and only the loss in the energy conversion process is needed to be consumed.
In the designed control circuit, the combination of a driving circuit, a switch module and a control unit is adopted to realize digital accurate control and realize exchange between alternating current and direct current and alternating current.
[ description of the drawings ]
FIG. 1 is a mechanical schematic of a preferred embodiment of the present utility model;
FIG. 2 is a schematic cross-sectional view of a preferred embodiment of the present utility model;
FIG. 3 is a schematic diagram of a control circuit according to a preferred embodiment of the present utility model.
[ detailed description ] of the utility model
Referring to fig. 1-3 of the drawings, the preferred embodiment of the present utility model will be described in further detail. A motor test device comprises a test machine table 1, wherein the test machine table 1 is a basic bracket, one side of the basic bracket is provided with a motor 2 to be tested, and the other side is provided with an executing motor 3. In this embodiment, a direct-drive motor is taken as an example, so that the motor 2 to be tested and the executing motor 3 in the figure only represent core components of the motor such as a stator, a rotor, an output shaft and the like.
The side of the motor to be tested 2 is provided with a motor support to be tested, the motor support to be tested comprises a first wallboard 21 and a second wallboard 22, a motor stator to be tested 23 is fixed on the outer side of the first wallboard 21, a winding is arranged on the motor stator to be tested 23, a motor rotor 24 to be tested is arranged in the motor stator to be tested, and a motor output shaft 25 to be tested is arranged in the middle of the motor rotor 24 to be tested. When the winding on the motor rotor 24 to be tested is powered to rotate, the motor output shaft 25 to be tested is driven to rotate. A first shaft sleeve 26 is connected between the first wallboard 21 and the second wallboard 22, a through hole is formed among the first wallboard 21, the second wallboard 22 and the first shaft sleeve 26, the output end of the motor output shaft 25 to be tested passes through the through hole and is exposed out of the second wallboard 22, and meanwhile, two bearings are arranged in the first shaft sleeve 26 and used for supporting the motor output shaft 25 to be tested, so that stable rotation operation is ensured.
The end of the motor output shaft 25 to be measured is connected with one end of the dynamic torque sensor 5 through a first coupling 41, and the other end of the dynamic torque sensor 5 is connected with the executing motor output shaft 35 through a second coupling 42.
The connection mode of the execution motor 3 and the motor 2 to be tested form a mirror symmetry structure. The side of the actuator motor 3 is also provided with an actuator motor support, the actuator motor support comprises a third wallboard 31 and a fourth wallboard 32, an actuator motor stator 33 is fixed on the outer side of the fourth wallboard 32, an actuator motor rotor 34 is installed inside the actuator motor stator 33, and an actuator motor output shaft 35 is installed in the middle of the actuator motor rotor 34. A second shaft sleeve 36 is connected between the third wallboard 31 and the fourth wallboard 32, a through hole is formed between the third wallboard 31 and the fourth wallboard 32 and the second shaft sleeve 36, the output end of the output shaft 35 of the execution motor passes through the through hole, and the output end of the output shaft 35 of the execution motor is supported by a bearing in the second shaft sleeve 36, so that stable rotation work is ensured.
When the motor output shaft 25 to be tested transmits power to the execution motor output shaft 35 through the dynamic torque sensor 5, the execution motor output shaft 35 is driven to rotate, the execution motor rotor 34 rotates together, and therefore the upper winding of the execution motor stator 33 generates current to generate electricity.
The control circuit schematic of the present utility model is shown in fig. 3, with three-phase terminals on both the windings of the motor 2 to be tested and the actuator motor 3. The three-phase wiring terminals of the motor 2 to be tested comprise a first winding wiring terminal U1, a second winding wiring terminal V1 and a third winding wiring terminal W1, and the three-phase wiring terminals of the motor to be tested comprise a first winding wiring terminal U2, a second winding wiring terminal V2 and a third winding wiring terminal W2. The utility model adopts a digital circuit control mode to convert the DC bus DC power supply of the motor to be tested into the AC drive of the motor to be tested 2, and executes the AC power generated by the forced power generation of the motor 3 to be converted into DC feedback voltage through digital conversion, and the DC feedback voltage is connected to the DC power supply of the motor to be tested in a backward way to form feedback compensation. In the embodiment, the direct current power supply of the direct current bus of the motor to be tested is converted by 380V mains supply through a rectifier.
One side of the motor 2 to be tested is provided with a triode group to be tested, which comprises a first switching tube T1, a second switching tube T2, a third switching tube T3, a fourth switching tube T4, a fifth switching tube T5 and a sixth switching tube T6. Wherein the emitter of the first switching tube T1 is connected with the first winding terminal U1, the emitter of the second switching tube T2 is connected with the second winding terminal V1, and the emitter of the third switching tube T3 is connected with the third winding terminal W1. And then the collectors of the first switching tube T1, the second switching tube T2 and the third switching tube T3 are connected to the positive pole ADC+ of the direct current bus of the motor to be tested, namely the positive pole end of the direct current power supply of the motor to be tested 2. Meanwhile, a base electrode of the first switching tube T1 is connected to a PWM1 pin of the motor switch module IGBT1 to be tested, a base electrode of the second switching tube T2 is connected to a PWM3 pin of the motor switch module IGBT1 to be tested, and a base electrode of the third switching tube T3 is connected to a PWM5 pin of the motor switch module IGBT1 to be tested.
In addition, the collector of the fourth switching tube T4 is connected to the first winding terminal U1, the collector of the fifth switching tube T5 is connected to the second winding terminal V1, the collector of the sixth switching tube T6 is connected to the third winding terminal W1, and the emitters of the fourth switching tube T4, the fifth switching tube T5 and the sixth switching tube T6 are all connected to the negative ADC of the dc bus of the motor to be tested, i.e. the negative terminal of the dc power supply of the motor to be tested 2. The base electrode of the fourth switching tube T4 is connected with the PWM6 pin of the motor switch module IGBT1 to be tested, the base electrode of the fifth switching tube T5 is connected with the PWM4 pin of the motor switch module IGBT1 to be tested, and the base electrode of the sixth switching tube T6 is connected with the PWM2 pin of the motor switch module IGBT1 to be tested.
Through the connection of triode and the motor switch module IGBT1 that awaits measuring, through logic compiling, can accurate control the high low level that each pin of motor switch module IGBT1 that awaits measuring provided switches over, can realize that first switching tube T1, second switching tube T2, third switching tube T3's the form body that switches on, realizes converting into the alternating current drive to the motor 2 that awaits measuring through direct current power supply. Thus, the input pin of the motor switch module to be tested IGBT1 is connected to the motor control unit to be tested P1, where the motor control unit to be tested P1 is a control unit, and chips such as an ARM processor on the current world may be used, and the motor switch module to be tested IGBT1 is a semiconductor transistor period. The motor to be tested control unit P1 is used for controlling the motor switch module IGBT1 to be tested, so that the output pins corresponding to the motor switch module IGBT1 to be tested generate required logic high and low level signals, and further the conduction state of each triode connected to the three-phase terminal of the motor 2 to be tested is controlled, and alternating current driving is realized.
The same principle is also applied to the side of the actuator motor 3, which is provided with an actuator Fang Sanji group comprising a seventh switching tube T7, an eighth switching tube T8, a ninth switching tube T9, a tenth switching tube T10, an eleventh switching tube T11 and a twelfth switching tube T12. Specifically, an emitter of the seventh switching tube T7 is connected to the second winding terminal U2, an emitter of the eighth switching tube T8 is connected to the second winding terminal V2, and an emitter of the ninth switching tube T9 is connected to the third winding terminal W3. Then, the collectors of the seventh switching tube T7, the eighth switching tube T8 and the ninth switching tube T9 are all connected to the positive pole BDC+ of the DC bus of the execution motor, the base electrode of the seventh switching tube T7 is connected to the PWM1 output pin of the IGBT2 of the execution motor switching module, the base electrode of the eighth switching tube T8 is connected to the PWM3 output pin of the IGBT2 of the execution motor switching module, and the base electrode of the ninth switching tube T9 is connected to the PWM5 output pin of the IGBT2 of the execution motor switching module.
The collector of the tenth switching tube T10 is connected to the first winding terminal U2, the collector of the eleventh switching tube T11 is connected to the second winding terminal V2, and the collector of the twelfth switching tube T12 is connected to the third winding terminal W3. Meanwhile, the emitters of the tenth switching tube T10, the eleventh switching tube T11 and the twelfth switching tube T12 are connected to the negative electrode BDC-of the direct current bus of the execution motor to form a negative electrode output end. The base electrode of the tenth switching tube T10 is connected to the PWM6 output pin of the executing motor switching module IGBT2, the base electrode of the eleventh switching tube T11 is connected to the PWM4 output pin of the executing motor switching module IGBT2, and the base electrode of the twelfth switching tube T12 is connected to the PWM2 output pin of the executing motor switching module IGBT 2. The input pin of the execution motor switch module IGBT2 is connected to the execution motor control unit P2.
All the triodes in the utility model are independently provided with a voltage stabilizing diode, the positive electrode of the voltage stabilizing diode is connected with the emitter electrode of the triode, and the negative electrode of the voltage stabilizing diode is connected with the collector electrode of the triode.
In addition, an encoder 27 is mounted on the motor output shaft 25 to be measured. In this embodiment a permanent magnet motor, so that the encoder can detect the real-time position of the rotor. Encoders may be mounted on the motor to be measured 2 and the actuator motor 3, respectively.
When the motor 2 to be tested transmits power to the actuator motor output shaft 35 through the dynamic torque sensor 5, the actuator motor output shaft 35 rotates together with the actuator motor rotor 34, and the actuator motor 3 is forced to generate alternating current. Meanwhile, the execution motor control unit P2 controls the execution motor switch module IGBT2, so that the output pins corresponding to the execution motor switch module IGBT2 generate required logic high and low level signals, and the conduction state of each triode on the three-phase wiring terminal of the execution motor 3 is controlled. And combining the alternating current signals of the three-phase wiring terminals to control the required switching signals so as to form stable direct current output. And then the positive pole of the DC output of the executing motor is connected to the positive pole of the DC power supply end of the tested motor, and the negative pole of the DC output of the executing motor is connected to the negative pole of the DC power supply end of the tested motor, so as to form feedback compensation of current.
According to the utility model, through the cooperation of the mechanical structure and the control circuit, the executing motor is driven in the detection process of the motor to be detected, the kinetic energy generated by the motor to be detected is converted into electric energy through the executing motor, and the electric energy is compensated and fed back to the original power supply end. When the cyclic compensation is balanced, the basically external power supply only needs to provide a loss part in the conversion process.
The above embodiments are only preferred embodiments of the present utility model, and are not intended to limit the present utility model, but any modifications, equivalent substitutions, improvements, etc. within the spirit and principles of the present utility model should be included in the scope of the present utility model.
Claims (10)
1. A motor test device is characterized in that: the device comprises a test machine table, a motor to be tested and an execution motor; the motor to be tested is powered by the direct current bus of the motor to be tested, an output shaft of the motor to be tested is connected with one end of the dynamic torque sensor through the first coupler, the other end of the dynamic torque sensor is connected with an output shaft of the executing motor through the second coupler, and the compensation feedback of the output end of the direct current bus of the executing motor is connected to the power supply end of the direct current bus of the motor to be tested.
2. A motor testing device according to claim 1, wherein: the motor to be tested is characterized in that a direct current bus power supply end of the motor to be tested is connected with a three-phase connection end of the motor to be tested through a triode, the triode is simultaneously connected with an output end of a motor switch module IGBT1 to be tested, and an input end of the motor switch module IGBT1 to be tested is connected with a motor control unit P1 to be tested.
3. A motor testing device according to claim 2, wherein: the three-phase wiring terminal of the motor to be tested comprises a first winding wiring terminal U1, a second winding wiring terminal V1 and a third winding wiring terminal W1; an emitter of the first switching tube T1 is connected with a first winding terminal U1, an emitter of the second switching tube T2 is connected with a second winding terminal V1, and an emitter of the third switching tube T3 is connected with a third winding terminal W1; the collectors of the first switching tube T1, the second switching tube T2 and the third switching tube T3 are connected to the positive electrode of the direct current bus of the motor to be tested, and the bases of the first switching tube T1, the second switching tube T2 and the third switching tube T3 are respectively and independently connected to one output pin of the motor switch module IGBT1 to be tested.
4. A motor testing apparatus according to claim 2 or 3, wherein: the triode also comprises a fourth switching tube T4, a fifth switching tube T5 and a sixth switching tube T6, wherein the collector of the fourth switching tube T4 is connected with the first winding terminal U1, the collector of the fifth switching tube T5 is connected with the second winding terminal V1, the collector of the sixth switching tube T6 is connected with the third winding terminal W1, the emitters of the fourth switching tube T4, the fifth switching tube T5 and the sixth switching tube T6 are all connected to the negative electrode of a direct current bus of the motor to be tested, and the bases of the fourth switching tube T4, the fifth switching tube T5 and the sixth switching tube T6 are respectively and independently connected to one output pin of the motor switch module IGBT1 to be tested.
5. A motor testing device according to claim 1, wherein: the executing motor is characterized in that the output end of a direct current bus of the executing motor is connected with the three-phase connection end of the direct current bus through a triode, the triode is simultaneously connected with the output end of an executing motor switch module IGBT2, and the input end of the executing motor switch module IGBT2 is connected with an executing motor control unit P2.
6. A motor testing device according to claim 5, wherein: the three-phase wiring terminal of the execution motor comprises a first winding wiring terminal U2, a second winding wiring terminal V2 and a third winding wiring terminal W2; an emitter of the seventh switching tube T7 is connected with the second winding terminal U2, an emitter of the eighth switching tube T8 is connected with the second winding terminal V2, and an emitter of the ninth switching tube T9 is connected with the third winding terminal W3; the collectors of the seventh switching tube T7, the eighth switching tube T8 and the ninth switching tube T9 are all connected to the positive pole of the direct current bus of the execution motor, and the bases of the seventh switching tube T7, the eighth switching tube T8 and the ninth switching tube T9 are respectively and independently connected to one output pin of the IGBT2 of the execution motor.
7. A motor testing device according to claim 5 or 6, wherein: the triode also comprises a tenth switching tube T10, an eleventh switching tube T11 and a twelfth switching tube T12, wherein a collector of the tenth switching tube T10 is connected with the first winding terminal U2, a collector of the eleventh switching tube T11 is connected with the second winding terminal V2, a collector of the twelfth switching tube T12 is connected with the third winding terminal W3, emitters of the tenth switching tube T10, the eleventh switching tube T11 and the twelfth switching tube T12 are connected to a negative electrode of a direct current bus of the executing motor, and bases of the tenth switching tube T10, the eleventh switching tube T11 and the twelfth switching tube T12 are respectively and independently connected to one output pin of the IGBT2 of the executing motor switching module.
8. A motor testing device according to claim 1, wherein: the positive electrode of the executing motor direct current bus is connected with the positive electrode of the motor direct current bus to be tested, and the negative electrode of the executing motor direct current bus is connected with the negative electrode of the motor direct current bus to be tested, so that energy feedback is realized.
9. A motor testing device according to claim 2, wherein: the triode is connected with a voltage-stabilizing diode, the positive electrode of the voltage-stabilizing diode is connected with the emitter of the triode, and the negative electrode of the voltage-stabilizing diode is connected with the collector of the triode.
10. A motor testing device according to claim 1, wherein: and encoders are arranged on the motor to be tested and the executing motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223426958.6U CN219625655U (en) | 2022-12-21 | 2022-12-21 | Motor test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223426958.6U CN219625655U (en) | 2022-12-21 | 2022-12-21 | Motor test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219625655U true CN219625655U (en) | 2023-09-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223426958.6U Active CN219625655U (en) | 2022-12-21 | 2022-12-21 | Motor test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219625655U (en) |
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2022
- 2022-12-21 CN CN202223426958.6U patent/CN219625655U/en active Active
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