No abstract

With the rapid development of new energy vehicles, electromagnetic compatibility of new energy vehicles has been widely concerned. Therefore, based on the conducted electromagnetic interference theory of electric vehicle electric drive system, a kind of electromagnetic interference transmission path is proposed, and its closed-loop simulation is carried out. The results show that the key point that has great influence on the radiation emission of the electric drive system is whether there is a torque, essentially whether the motor controller has power output, and it has little relation with the motor speed and bus voltage. In addition to the influence of whether or not the torque has on radiation emission, the torque size is further compared, set 50 Nm, 100 Nm, and 200 Nm, respectively, for comparison, and it is found that the increase of torque has no obvious influence on radiation emission. Therefore, during the test, the appropriate torque can be selected according to the actual situation, rather than the maximum torque that the component can work.

In the context of the continuous development of various innovative technologies, the development of the photoelectric industry is also accelerating. The rapid progress of the photoelectric industry needs to rely on corresponding technical support. The use and wide coverage of photoelectric coupling technology have laid a technical foundation for the rapid development of the photoelectric industry. Considering the use characteristics of photocouplers, traditional design methods cannot meet the requirements of high-voltage and low-voltage working environments, so it is necessary to improve their performance. As time goes by, the lifestyle and needs of Chinese people are developing in a diversified direction, and the "sharing" model has received more and more attention and recognition. Shared cars are one of the industries that has developed relatively rapidly. For shared electric vehicles, solving the charging problem is extremely important. Many cities have set up charging piles, and charging technology has also made significant progress due to the development of shared electric vehicles. However, optimizing the charging situation and scheduling vehicles during driving and parking has become the primary issue facing the development of charging technology. According to the characteristics of current charging technology development, a fuzzy adaptive PID control algorithm is used to identify and automatically control vehicles during the charging process, in order to improve the charging performance of the charging pile.

In the context of the continuous development of various innovative technologies, the development of the photoelectric industry is also accelerating. The rapid progress of the photoelectric industry needs to rely on corresponding technical support. The use and wide coverage of photoelectric coupling technology have laid a technical foundation for the rapid development of the photoelectric industry. Considering the use characteristics of photocouplers, traditional design methods cannot meet the requirements of highvoltage and low-voltage working environments, so it is necessary to improve their performance. As time goes by, the lifestyle and needs of Chinese people are developing in a diversi ed direction, and the "sharing" model has received more and more attention and recognition. Shared cars are one of the industries that has developed relatively rapidly. For shared electric vehicles, solving the charging problem is extremely important. Many cities have set up charging piles, and charging technology has also made signi cant progress due to the development of shared electric vehicles. However, optimizing the charging situation and scheduling vehicles during driving and parking has become the primary issue facing the development of charging technology. According to the characteristics of current charging technology development, a fuzzy adaptive PID control algorithm is used to identify and automatically control vehicles during the charging process, in order to improve the charging performance of the charging pile.