Research of Integrative Control of a New Type of Dual-PWM Converter

The rectifying link and the inversion link is mutually independent in traditional dual-PWM frequency-conversion and speed-regulation control system, so the capacity of capacitance of DC side is bigger which can cause problems such as big size of the device and low reliability. The paper adopted integrative control for rectifier and inverter with SVPWM control strategy, which could solve the above problems.At the same time, in order to reduce interference and improve reliability of the system, the paper adopted master-slave structure mode of dual-DSP, which separated the control link and the drive link of converter as well as the main circuit of power amplifier far from the controller and close to the drive circuit. The experimental results proved the feasibility of this control method.