Single-phase BOOST Power Factor Research Based On The TMS320F281X

With the extensive use of electrical equipment,Grid harm of power receive system gets more and more attention.A lot of power electronics are applied for electronic equipment, especially the use of switching power supply and frequency conversion circuit, the power grid caused serious interference and damage.In all the influence factors, the harmonic effect is prominent. In order to effectively suppress harmonic and improve the efficient use of energy and equipment, we introduce the technology of Active-Power-Factor-Correction, also called APFC technology. A large number of APFC is applied to the circuit device.lt not only can bring good economic benefits and ental environm benefits, also can bring good social benefits.Digital Power Control is now the mainstream of the switching power supply products, this article is based on TMS320F2812to Boost a study on the APFC.First of all,this article introduces development and an overview of the research status on the power factor correction technology in recent years on the basis of a large number of references, and then analyses the principle of power factor correction technology.According to the circuit structure and working condition,the working mode and analyzes the topology control method, finally decided in the comparative analysis of the power factor correction method, that is:in critical conduction mode, based on average current control strategy adopts the current inner loop and voltage outer loop2-ring control of power factor correction technology.Finally,we choose the booster type as the main circuit topology structure, adopt TMS320F2812models of digital signal processor for digital controller of system implementation.The control strategy of the multiplier is established small signal model of voltage loop and current loop, design the optimal parameters of the system, realizes the sampling PI control algorithm link link and link of anti-interference and EMI, PID algorithm is proposed based on the immune feedback, the system voltage feed forward links and soft starter, finished the experiment device, through the experiment better experimental waveforms are obtained.