04/03/2024
Breaking Traditional Testing! Programmable DC Power Supplies Make New Energy Vehicle Motor Testing Easier!
New energy vehicle motor start-stop performance testing is an important part of measuring motor performance, and programmable DC power supplies have a unique advantage in simulating battery-powered testing. The programmable DC power supply can provide constant current and voltage output to ensure the accuracy and reliability of the new energy motor testing process.
I. Background
In the motor start-stop performance test of new energy vehicles, the battery, as an energy reserve and power supply device, can provide stable voltage and current for the motor to ensure the normal operation of the motor. However, the life and performance of the battery will be affected by a variety of factors, such as power, load, temperature and so on. Therefore, it is particularly important to simulate the battery power supply test motor start-stop performance test.
2.Second, the test requirements
At this stage, the voltage of new energy motors is generally within 800V, and if new energy vehicle motors are directly powered by batteries to test their performance, there are problems such as difficulty in controlling the battery voltage, frequent replacement of batteries, and the high price of batteries, which makes it impossible to accurately test the performance of motors in the case of fully charged and under-charged batteries, and so on.
Series of program-controlled DC power supply, with constant voltage and current mode, program-controlled output mode, can simulate the battery in full or loss of power to test the performance of the motor.
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Three, test difficulties
1, the use of battery power supply, due to the battery to store how much power is not controllable, can not simulate the power storage test in the loss of power, full power working conditions of the motor working state.
2, if the battery in the loss of power, theoretically, the motor should not work, otherwise it will affect the battery life.
3, the power supply does not have anti-shock performance, low precision, can not meet the high precision test.
In the selection of programmable DC power supply, it must be taken into account that the motor has a large inrush current during startup, the selection current is basically 3-5 times the rated current of the motor, and the new energy automobile motor has a reverse electromotive force when it stops, which needs to be strengthened to prevent the current from backing up.
