The Research Of Space Vector Inverter Based On DSP

The inverter is used more and more widely in society. With the development of micro-computer technology, digital control is popular in inverter control.Because of its high speed digital process ability, DSP as the core of inverter control has many advantages, such as modularization, integration, high reliance.The topology of three-phase inverter with resonant DC link is introduced in this paper. The control system contains two parts, PWM inverter and resonant DC link. Soft-switching technology is also used in the inverter design. In this way the frequency of the inverter increases ten times. Space vector control is used in control theory, and this kind of control is an improving method based on the traditional control method. Also this control method can reduce the times of switch in inverse bridge, heighten the frequency of the switch, let system finish the SVPWM control arithmetic real-timely, has high precision, quicker speed and decrease the output harmonic.The SVPWM theory and resonant DC link are analyzed detailedly in this paper. The system main circuit is designed, the hardware and software are also designed and at last the responding results are concluded in this paper.