Most of the power electronic equipments are operated with dc supply. For reliable and stable operation, dc supply should be regulated. The regulation can be performed using buck, boost, Cûk, Sepic, Flyback regulators. Except single phase rectifier with resistive load all other rectifiers input currents are non sinusoidal in nature. This front end current distortion of rectifier converter leads ...

Most of the power electronic equipments are operated with dc supply. For reliable and stable operation, dc supply should be regulated. The regulation can be performed using buck, boost, Cûk, Sepic, Flyback regulators. Except single phase rectifier with resistive load all other rectifiers input currents are non sinusoidal in nature. This front end current distortion of rectifier converter leads ...

Abstract: This paper proposes a novel high-gain three-port power converter with fuel cell (FC), battery sources and stacked output for a hybrid electric vehicle (HEV) connected to a dc-microgrid. In the proposed power converter, the load power can be flexibly distributed between the input sources. Moreover, the charging or discharging of the battery storage device can be controlled effectively ...

A new passive Power Factor Corrector (PFC) based on Valley Fill (VF) is proposed for an off-line Flyback converter. By adding an extra winding which is magnetically coupled to the Flyback transformer and electrically coupled to the VF, higher Power Factor (PF) and lower Total Harmonic Distortion (THD) can be achieved. The proposed circuit uses a high frequency inductor, low voltage capacitors t...

By means of a graft scheme, a buck-boost cell and a wide range diagonal halfbridge flyback cell are combined to create a novel single-stage high power factor correction (HPFC) diagonal half-bridge flyback ac/dc converter in this paper. When both of the two cells operate in discontinuous conduction mode, the proposed converter exhibits high power factor and low bulk capacitor voltage stress inde...

This paper deals with the analysis, design and control of a small power standalone solar photovoltaic (SPV) generating system. A PV array of 33V-43.2V is taken as an input and its output voltage is achieved as 360V dc using a flyback converter. The battery is charged at this voltage and using a single-phase voltage source inverter (VSI) it is converted into a single phase ac of 220Vac, 50 Hz. A...

Within the wide family of Switch Mode Power Supplies (SMPS), the Flyback converter represents the preferred structure for use in small and medium power applications such as wall adapters, off-line battery chargers, fax machines, etc. The calculations involved in the design of a Flyback converter, especially one which operates in discontinuous mode, are not overly complex. However, the analysis ...

Most of the power electronic equipments are operated with dc supply. For reliable and stable operation, dc supply should be regulated. The regulation can be performed using buck, boost, Cûk, Sepic, Flyback regulators. Except single phase rectifier with resistive load all other rectifiers input currents are non sinusoidal in nature. This front end current distortion of rectifier converter leads ...

1 School of Information and Electric Engineering, Panzhihua University, Panzhihua 617000, Sichuan, China 2 School of Electrical Engineering and Electronic Information, Xihua University, Chengdu 610039, China 3 School of Information Engineering, Southwest University of Science and Technology, Mianyang Sichuan 621010, China 4 The Second Research Institute of CAAC ChengDu 610041 China [email protected]

Abstract – Modeling of the cascode switching structure used in Flyback converter for achieving fast startup in the deeply dimmed phase-cut LED driver is presented in this paper. The cascode structure’s inherent instability and oscillation issue is modeled and analyzed quantitatively. Three solutions are proposed to stabilize the structure and suppress the unstable voltage oscillation. Solutions...