Motor drive test load and motor drive test device
By combining a three-phase inductive load and a temperature sensor, the problem of flexibility and versatility of motor driver test loads is solved, enabling low-energy multi-platform testing and environmental durability testing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINGWEI HIRAIN (TIANJIN) RES&DEV CO LTD
- Filing Date
- 2025-07-28
- Publication Date
- 2026-07-17
AI Technical Summary
Existing motor driver test loads are insufficient in terms of flexibility and versatility. In particular, the combined loads of resistors and inductors in high-power load designs consume a lot of power and generate a lot of heat, which cannot meet the diverse and versatility requirements of motor MCU drivers.
A three-phase inductive load is used as the test load. Combined with a temperature sensor and a cooling unit, the load temperature is monitored by the temperature sensor and the cooling unit is activated when the temperature exceeds the threshold to reduce heat generation. Multiple three-phase test terminals are used to adapt to the test requirements of different motor drives.
It achieves the goal of meeting diverse and universal requirements while reducing heat generation, reducing power consumption, adapting to multi-platform testing, and reducing test costs through temperature management of the control unit.
Smart Images
Figure CN224518867U_ABST
Abstract
Claims
1. An electric motor drive test load, characterized by, The test load for the motor driver includes: A three-phase inductive load, wherein the three-phase inductive load includes multiple three-phase test terminals, and the loads of each of the three-phase test terminals are different; The motor driver under test is connected to the target three-phase test terminal of the three-phase inductive load, and the test is performed based on the load corresponding to the target three-phase test terminal. A temperature sensor is installed on a three-phase inductive load to collect and output the temperature signal of the three-phase inductive load. A control unit, connected to the temperature sensor, is used to receive temperature signals and output a cooling signal when the temperature signal is higher than a temperature threshold. A cooling unit is provided, which is installed on the three-phase inductive load and connected to the control unit. The cooling unit is used to receive a cooling signal to start and reduce the temperature of the three-phase inductive load.
2. The motor drive test load of claim 1, wherein, The three-phase inductive load includes: The three-phase inductor coil has its first end connected to the circuit, and each phase inductor coil has a three-phase test terminal set at a preset position.
3. The motor drive test load of claim 2, wherein, The motor driver under test is connected to the matching target three-phase test terminal.
4. The motor drive test load of claim 3, wherein, The control unit is used to output an alarm signal when the temperature signal is higher than the temperature threshold. The motor driver test load also includes: An alarm unit, which is connected to the control unit, is used to receive alarm signals and perform alarms in a preset manner.
5. The motor drive test load of claim 4, wherein, The control unit is also used to output a display signal of the temperature signal; The motor driver test load also includes: The display unit, which is connected to the control unit, is used to receive and display display signals.
6. The motor drive test load of claim 5, wherein, The three-phase test terminals of the three-phase inductor coil, the temperature sensor, the cooling unit, the alarm unit, and the display unit are integrated into the control panel.
7. An electric motor drive test apparatus, characterized by, The motor driver testing device includes the motor driver testing load and testing system as described in any one of claims 1 to 6; The test system is connected to the motor driver under test and the test load of the motor driver, respectively, and is used to output test signals and receive test data from the motor driver under test and the data collected by the test load of the motor driver.
8. The motor drive test device of claim 7, wherein, The testing system includes: A communication unit is connected to the motor driver under test and the motor driver test load, respectively, and is used to transmit signals according to a preset communication method. The main control unit outputs control signals based on the communication unit and receives acquired signals.
9. The motor drive test device of claim 8, wherein, The testing system also includes: A power supply unit is connected to the motor driver under test and is used to supply power to the motor driver.
10. The motor drive test device of claim 9, wherein, The communication unit includes: A wireless local area network communication unit is connected to the power supply unit and the main control unit respectively. It is used to receive the control power signal from the main control unit and transmit it to the power supply unit. It is also used to receive the power operation signal from the power supply unit and transmit it to the main control unit. An application layer communication unit is connected to both the motor driver under test and the main control unit, and is used to receive control switch signals from the main control unit and transmit them to the motor driver under test. A serial communication protocol unit is connected to both the motor driver under test and the main control unit, and is used to receive the switching operation signal of the motor driver and transmit it to the main control unit. A differential communication protocol unit is provided, which is connected to the motor driver test load and is used to send the collected data of the motor driver test load to the differential communication protocol unit.