The Development Of Small Power Pulse Load Speed Controller

With the development of contemporary society automation,electrification,ac speed regulation technology has been mature and occupies a dominant position in the field of industrial adjustable speed drive,at present,the fitness equipment and household appliances to the performance requirements of the ac(alternating current)controller is becoming more and more diverse,"intelligent society","intelligent life" concept has been put forward,increasing the people attention to the quality of life,their own health.For sports equipment pulse load has the characteristics of short duration,wide range,the purpose of this paper is to develop a high performance low power pulse load speed controller.According to the functional requirements of speed control system,first of all,on the basis of theoretical study pressure frequency coordination control SPWM variable frequency speed regulation system was put forward the overall framework,and then the controller hardware circuit design and software program design,finally,the speed control system for performance testing.With STM32F103ZET6 microprocessor as the control core,uses the slip frequency control of frequency control of motor speed control mode,the main circuit USES to pay-direct-voltage type inverter circuit,combined with the sinusoidal pulse width modulation(SPWM)technology to implement the low-power three-phase asynchronous motor variable frequency variable speed regulation.Speed control system performance testing,to validate the system reliability,stability,debugging results show that the speed controller has reached the set of technical indicators,and has the characteristics of small volume,strong extensibility.