Dsp-based The Vvvf Hardware Circuit Design

The variable speed can be divided into two important parts: soft design and hardware design. The design firstly explains the basic techniques. of the variable speed, the theory and method of the SPWM. Then the major hardware circuit is introduced,Especilly TMS320F2812 and IPM. The calculation about parameter is made in the major circuit. At the same time the security of the circuit was equipped. DSP was regarded as the controller core of the SPWM. We establish a system model which control system speed open and close loop with SPWM,we simulate and analyze the control system through MATLAB.The simulation results demonstrate that it is a high value to popularize and apply the controlling system. Finally The design also gave the flow chart about the soft design.