New starting point for high-quality layout drive motor, new energy electronic control / motor controller assembly test equipment
New energy electric vehicles use electric energy as energy, have the outstanding advantages of zero emissions and no pollution, and take the environmental protection demand and energy crisis as the starting point. Therefore, their development has attracted worldwide attention. As China's new energy vehicle support policy gradually falls and market demand continues to grow, new energy vehicles will become a new direction for the development of the motor industry. At the same time, it will also be a new opportunity and new challenge for the development of China's motor enterprises. It is estimated that by 2020, the new energy automobile motor market will reach 30.6 billion yuan. The demand for new energy vehicle drive motor assembly test equipment and new energy electronic control / motor controller assembly test equipment will also increase.
The development of electric vehicles depends on the advancement of technology. In particular, it is necessary to further improve the performance of its power system and reduce its cost. One of the most critical issues that restrict the development of electric vehicles is the motor.
At present, China's new energy vehicle drive motors mainly include permanent magnet synchronous motors, DC motors, AC asynchronous motors and switched reluctance motors. New energy vehicle drive motors face the challenges of safety, efficiency and low price, which determine the future development and competitiveness of new energy vehicles.
Based on the characteristics of electric vehicles, there are also higher requirements for the motors used. There are also higher requirements for new energy vehicle drive motor test equipment and new energy electronic control/motor controller test equipment. In order to increase the speed, the motor should have a higher instantaneous power and power density (W / kg); in order to increase the driving distance of one charge, the motor should have higher efficiency; and the electric car is geared, so the motor should have a higher High and low speed overall efficiency; in addition, it has strong overload capacity, large starting torque and fast torque response. The speed of the electric vehicle is lower when starting and climbing, but the torque is required to be large; the torque required for normal operation is small, and the speed is high. The constant torque characteristic at low speed and the constant power characteristic at high speed, and the operating speed range of the motor should be wide. In addition, the motor should also be sturdy, reliable, and have a certain degree of dust and water resistance, and the cost can not be too high.
One of the key technologies of electric vehicles is the drive motor and motor control system. Its choice is directly related to the performance of the electric vehicle and the difficulty in the development process. Electric vehicles used different motors in different historical periods, and initially used DC brushed motors (DCM) with better control performance and lower cost. With the development of power electronics technology and motor control technology, permanent magnet brushless motors (PM), AC induction motors (IM), and switched reluctance motors (SRM) have shown superior performance over DC motors and have been phased out. A DC motor. Most of the electric vehicles developed in the United States and Germany use AC induction motors. The main advantages are lower price, high efficiency and light weight, but the starting torque is small. Almost all of the electric vehicles developed in Japan use permanent magnet brushless motors. The main advantage is that the efficiency is higher than that of AC induction motors, but the price is more expensive. The permanent magnet materials are generally heat resistant to less than 180 °C. The structure of the switched reluctance motor is relatively new, and the advantages are simple structure, reliability, low cost, good starting performance, no large inrush current, and it has the advantages of AC induction motor frequency conversion speed regulation and DC motor speed regulation. The disadvantage is noise and The vibration is large and the torque ripple is also large. New energy vehicle drive motor test equipment, new energy electronic control / motor controller test equipment, such equipment has played an important role in the detection of new energy auto parts.
