| 摘要 |
PURPOSE:To reduce the stray capacity between a motor control system and the car body as low as possible by insulating a battery power supply and the zero V of the main circuit for driving a main motor from the car body and insulating the frames of a motor controller body and the main motor from the car body. CONSTITUTION:A power supply, i.e., a battery, is connected in series with a capacitor in a motor controller 2 and elements constituting an H-bridge in an inverter. The controller frame 2 is secured to the car body 101 through an insulating bushing 102 using screws 103. The load shaft of a motor is coupled with a load drive shaft through a flexible coupling 104 of insulating bushing structure. This structure allows insulation of the controller frame and motor frame from the car body and reduces the stray capacity drastically thus reducing the leak current significantly. |
