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This paper presents a novel prototype circuit topology and control scheme of a high efficiency time-sharing dual mode single-phase sinewave PWM inverter for small scale solar PV power generation system, which is composed of partially controlled sinewave absolute PWM boost chopper in the first power processing stage as well as partially controlled sinewave PWM inverter in the second power processing stage. Its unique operating principle of two power processing stage with time-sharing dual mode sinewave modulation strategy is described in addition to a design example. Finally, this new conceptual single-phase sinewave PWM inverter related to solar PV power generation system suitable for residential application is evaluated and discussed on the basis of computer simulation and experimental results. The effectiveness of proposed inverter is proved from a practical point of view.