Time-Sharing Sinewave Absolute Value Tracking Boost Chopper Controlled One Stage Power Conditioner with Non Electrolytic Capacitor DC Filter Link

This paper presents a novel boost-full bridge cascade system topology without electrolytic capacitor DC filter link and its time-sharing control scheme of a selective dual mode pulse modulated high efficiency single-phase sinewave power conversion conditioner for small scale new energy generation applications. This power conversion system is composed of a sinewave absolute value tracking boost chopper with a bypass diode in the first power stage and sinewave PWM full-bridge inverter in the second power stage operated by dual mode selective time-sharing pulse pattern signal processing control approach. The unique operating principle of two power conditioning and processing stages with sectional time-sharing dual mode partial sinewave modulation scheme is described and discussed for stand alone utilization. The paper proposes a sinewave tracking voltage controlled soft switching PWM boost chopper with a bypass diode loop, which includes a passive auxiliary edge-resonant snubber. The new conceptual operating principle of this novel sinewave pulse modulated power conditioner acceptable for small scale new energy generation is evaluated through the experimental and simulation results, together with a control implementation