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This post was last edited by sdscj0122 on 2018-11-20 09:59. What is a frequency conversion power supply controller? The inverter power supply controller is the nerve center of the inverter power supply, directing all the components within it to work in automatic coordination. Under the control of the controller, the variable-frequency power supply can automatically carry out a series of operations according to the steps set in the program to complete specific tasks. The controller is the component that controls the motor speed; it is also the core of the variable-frequency power supply electric system, and it features under-voltage, current-limiting, and over-current protection functions. The functional controller also features multiple riding modes and a self-diagnosis function for the vehicle’s electrical components. The controller is the core component of an electric vehicle’s energy management system and for various signal processing tasks. The controller primarily uses a digital-analog hybrid control circuit to detect the relative position of the stator and rotor of the variable-frequency power supply, thereby enabling the motor to operate in a self-controlled, synchronized manner. It can detect the magnitude of the current in order to achieve closed-loop control of the current ； It can detect the motor’s speed, enabling closed-loop control of the speed. The controller also performs control functions such as synchronous phase shifting, direction detection, fault detection and handling, instruction signal input, and display signal output; therefore, it is the control core of the device.