New energy vehicle motor design verification tool

The electric motor of the electric vehicle is different from the traditional industrial motor, which has higher efficiency requirements in the wider speed range, and brings new testing methods for the efficiency test under the new condition.

In the past two years, the new energy automobile industry has flourished, and more and more enterprises have joined the competition in this industry. As the core driving motor and driver in electric vehicles, their performance directly determines whether the vehicle is competitive. Since Faraday discovered the principle of electromagnetic induction, the motor has developed nearly two hundred years from the very beginning of the prototype, and manufacturers of motor production can be seen everywhere in China.

However, ordinary motors often only operate at steady state, and usually only require measurement of efficiency at steady state. For motors used in electric vehicles, we can easily think of frequent start-ups, accelerations, brakes, and rapid changes in speed. The working range covers almost the speed range. Therefore, for electric motor motors, it is required to operate at a wider working speed. High efficiency in the range of moments in order to obtain a driving experience and energy consumption indicators.

At present, the national standard for motor testing of electric vehicles mainly comes from the test standards and methods of traditional industrial motors. It is often not enough for the current stage of EV motor testing. Some leading manufacturers in the industry will also develop their own test methods.

The most mainstream of these methods is to build the simulated real EV motor operating conditions in the laboratory. According to the real-time data recorded during the test, the average efficiency of the motor and the driver and the real-time dynamic efficiency are calculated, and the performance of the motor and the driver are analyzed and evaluated.

At present, there are three types of vehicle driving conditions in the world: the US USDC, the European EDC and the Japanese JDC. As a regionally sold vehicle, the cars sold in various countries will be simulated for different working conditions. In China, there are no standard conditions for manufacturers to apply tests, so building typical conditions is the first step for every EV motor manufacturer.

There are two common methods for constructing typical working condition data. The first one is to obtain a simulation model of the driving resistance of the vehicle, adjust various parameters, and calculate the real-time torque of the motor. The second type: through the vehicle data acquisition system, will be in various Real-time data running on the road is recorded.

After obtaining the working condition data, the road simulation test module in the MPT motor test platform is applied, and the speed command is run according to the working condition data. In the torque mode, the torque command is also set according to the working condition data. At the corresponding time point, the corresponding load motor speed and the measured motor torque are applied, and the MPT1000 automatically completes the test of the working condition of the motor and the motor under test. At the same time, MPT synchronously records the basic parameters such as voltage, current, power, temperature and waveform of the motor under test, and calculates the instantaneous efficiency in real time and the average efficiency of the selected interval.

Mobile Game Accessories

Mobile Game Accessories,Mobile Finger Sleeve,Mobile Wireless Controller,Gaming Gloves

MICROBITS TECHNOLOGY LIMITED , https://www.hkmicrobits.com