Boost Type Multi-Input Independent Generation System With Multi-Winding Simultaneous Power Supply

Abstract

The Boost type multi-input independent generation system (IGS) with multi-winding simultaneous power supply is proposed and deeply investigated, the important conclusions are obtained. Its circuit structure is composed of a single-stage multi-winding Boost type multi-input inverter with high-frequency-link and a single-stage isolated battery charging/discharging converter connected together at the output end, its circuit topological family includes 4 types of circuit such as full-bridge etc, the maximum power energy management control strategy (EMCS) with output voltage single-loop and three-state one-cycle phase-shift modulation is adopted, and the magnetic saturation of the energy storage inductor and the distortion of output voltage of the IGS are effectively suppressed. By comparing the load power and the total input sources power, the proposed EMCS achieves smooth transition among different power supply modes. The designed and developed 2.5kVA experimental prototype has shown that the proposed IGS has advantages such as single-stage conversion, high frequency galvanic isolation among load, multi-input sources and battery, simultaneous power supply in a high-frequency switching cycle, wide regulating range of duty cycle, small size and light weight, and strong load adaptability, etc.

Keywords

• Independent generation system
• multi-input inverter
• multi-winding boost
• three-state one-cycle phase-shift modulation
• simultaneous power supply