The high-speed reducer test bench consists of a low-inertia load analog dynamometer, a high-speed compact drive motor, a frequency converter, an environmental chamber, a cooling system, a high-precision sensor, a vibration monitoring and early warning system, a mechanical system, a real-time control system of the dynamometer, and a main control System and other parts. For the electric drive powertrain test bench, there is no need for high-speed drive motors, only low-inertia load simulation motors. The real-time dynamic control system can realize the speed and torque control through the real-time controller and simulate the actual load. The main control system can communicate with the environmental chamber, power analyzer, cooling system, EUT, etc., and realize control. The data acquisition system collects signals from torque sensors, vibration sensors, temperature sensors, pressure sensors, and other sensors, and transmits them to the main control system at a high speed. The sensor data can be displayed, saved and processed in the software interface.
1. High-speed reducer test system
The high-speed reducer test bench (Testsystem) is for testing the reducer at the back end of the high-speed motor of a pure electric vehicle for new energy vehicles, or the reducer of a hybrid vehicle. A compact high-speed drive motor can be used to simulate the on-board motor, with low inertia and compactness The type motor simulates the engine of a hybrid transmission, and the low inertia load motor simulates the vehicle road load. For a hybrid power transmission test bench, two high-speed motors are generally required, one to simulate the on-board motor and one to simulate the engine; two load motors to simulate the vehicle load. A pure electric vehicle reducer generally consists of a high-speed compact drive motor to simulate the on-board motor, and two load motors to simulate the vehicle load. The high-speed reducer test bench is equipped with battery simulator, power analyzer, cooling system, and electric assembly test is also possible.
Dynamometer selection specifications
The automobile transmission test bench includes a drive motor and a loading motor. The drive motor simulates an engine or a new energy vehicle on-board input motor; the loading motor simulates wheel load.
The electric assembly test bench (Testsystem) is designed to test the electric assembly of a pure electric vehicle of a new energy vehicle or the power assembly of a hybrid electric vehicle. A low-inertia compact motor can be used to simulate the engine of a hybrid transmission with low inertia. The load motor simulates the vehicle road load. The system also includes a battery simulator (or DC two-way power supply), high-precision power analyzer, on-board motor and controller cooling system, usw.
Dynamometer selection specifications
The recommended selection of wheel load simulation motors for electric or hybrid powertrains is as follows: