The Study Of SVPWM Vector Control Of VVVF Based On The DSP

In the recent years, with the appearance of the new power electron apparatus and microprocessor , the accurate asynchronous motor model and all kinds of advanced theories that have resulted in the development of motor control. The motor controller which haves high accuracy and control performance, wide speed regulating range can be possibly realized.Vector Control is based on motor unification principle, energy conversion and vector coordinate transformation theory. It has many advantages such current is decomposing two DC parts which orientated as the rotator magnetic field and controlled respectively. So magnetic flux and torque are decoupled. It controls the asynchronous motor as a asynchronous way.According to the highly development of DSP technology, the article selects TMS320F240 of Texas Instrument as main processor, we develop one frequency conversion adjustable-speed system which based on Vector Control principle. The main circuit of the inverter, the detect circuit of current ,voltage and motor speed ,intelligent power module(IPM) and DSP are all presented particularly in this paper.The inverters based on space-vector pwm technique have many good qualities ,such as less pulsating torque , higher use of DC bus voltage, less switching loss, better high-speed regulation performance .so it is applicable for the high-performance motor control system. The comprehensive and systematic research on induction machine's speed regulation system using space-vector PWM inverter is introduced in this thesis, which including mathematic modeling, control theory analyzing, digital control system design, simulation and experience. At last, realizing Rotor Magnetic FOC based on DSP. Experimental results prove that the system is good dynamic and static performances.