Unity-Power-Factor Control Based on Precise Ripple Cancellation for Fast-Response PFC Preregulator


Power-factor preregulators are commonly employed in electronic equipments for minimizing the injection of current harmonics into the mains power line. But, the bandwidth of typical preregulators are typically configured to be terribly little so as to achieve near-unity power factor, and this inevitably offers rise to poor dynamic response. Ripple estimation/cancellation technique is employed to eliminate the double-line frequency component from the sampled output voltage before it propagates into the voltage control loop, hence, the requirement of little bandwidth is not mandatory. The prevailing ripple estimation circuits, however, are only accurate under specific conditions, beyond that power factor can be degraded. In read of this, a replacement ripple estimation/cancellation network consisting of an amplitude tuner and a part shifter primarily based on switched-resistor circuits is proposed and verified experimentally on a 200-W boost power-issue preregulator. It is shown that the proposed ripple estimation network not only provides correct ripple estimation over a big selection of operating conditions, it additionally offers a method to decouple the power issue of a preregulator from its controller bandwidth. With the aid of the proposed ripple estimation network, the specified features of quick dynamic response and unity power issue are both achieved.

Did you like this research project?

To get this research project Guidelines, Training and Code... Click Here

PROJECT TITLE : Estimation, Control and Prediction of Voltage Level and Stability at Receiving Node ABSTRACT: Receiver voltage stability is addressed in this article. Voltage stability and level are intertwined concepts. Although
PROJECT TITLE :A Robotic Leg Prosthesis: Design, Control, and ImplementationABSTRACT:This text describes the look and control of a powered knee and ankle prosthesis for transfemoral amputees. Following an outline of the design
PROJECT TITLE :Modeling, Control, and Experimental Validation of a High-Speed Supercavitating VehicleABSTRACT:Underwater vehicles that travel inside a bubble or supercavity provide possibilities for prime-speed and energy-economical
PROJECT TITLE : Modeling, Control, and Implementation of DC–DC Converters for Variable Frequency Operation (2014) ABSTRACT : In this paper, novel small-signal averaged models for dc-dc converters operating at variable switching
PROJECT TITLE : Network Resource Allocation for Users With Multiple Connections Fairness and Stability - 2014 ABSTRACT: This paper studies network resource allocation between users that manage multiple connections, possibly

Ready to Complete Your Academic MTech Project Work In Affordable Price ?

Project Enquiry