The Design of Isolation and Electromagnetic Compatibility for High Voltage Servo Drive

In order to further reduce the weight and volume of the launch vehicles lithium battery, the bus voltage level of the vehicles power has been increased from 270VDC to 400VDC in recent years. The higher voltage level puts forward higher requirements for the isolation design of the control circuit and the drive circuit in the servo controller of the AC motor. According to the engineering practice, this paper analyzes the isolation design of the servo drive and the design of electromagnetic compatibility in detail, and realizes the complete isolation of high and low voltage in the servo controller. At the same time, the electromagnetic compatibility characteristics of the servo controller are further enhanced.