Title :
Multi-input converter with power factor correction and maximum power point tracking features
Author :
Chen, Y.-M. ; Liu, Y.-C. ; Wu, F.-Y. ; Wu, Y.-E.
Author_Institution :
Dept. of Electr. Eng., Nat. Chung Cheng Univ., Chia-Yi, Taiwan
Abstract :
A multi-input converter for photovoltaic (PV) power system applications with power factor correction (PFC) and maximum power point tracking (MPPT) features is proposed in this paper. With the proposed phase-shifted pulse-width-modulation (PWM) control, the multi-input converter can draw power from the utility line and PV arrays individually or simultaneously and deliver it to the load. In addition, an almost unity power factor for the utility line and an MPPT for PV arrays can also be achieved. Moreover, all the power switches in the proposed converter can be operated with either zero-voltage-switching (ZVS) at turn-on transition or zero-current-switching (ZCS) at turn-off transition. Hence, the switching losses of the power switches can be reduced. Experimental measurements are demonstrated to verify the performance of the proposed multi-input converter
Keywords :
PWM power convertors; losses; photovoltaic power systems; power control; power factor correction; switching circuits; MPPT; PV arrays; PV power system; ZCS; ZVS; almost unity power factor; maximum power point tracking; multi-input converter; phase-shifted PWM control; photovoltaic power system; power factor correction; power switches; switching losses reduction; turn-off transition; turn-on transition; utility line; zero-current-switching; zero-voltage-switching; Phased arrays; Photovoltaic systems; Power factor correction; Pulse power systems; Pulse width modulation; Pulse width modulation converters; Reactive power; Solar power generation; Switching converters; Zero current switching;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2002. APEC 2002. Seventeenth Annual IEEE
Conference_Location :
Dallas, TX
Print_ISBN :
0-7803-7404-5
DOI :
10.1109/APEC.2002.989289
