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This paper presents a new hybrid current control scheme for dead-time compensations and power density optimization of grid-connected dc/ac inverter. A sliding mode controller is designed for compensating the dead-time nonlinear operations, and a PI controller operates in the linear areas. According to the SMC controller output, the unnecessary gate drive signals are removed and the counter side switch...
This study develops a high-performance stand-alone photovoltaic (PV) generation system. To make the PV generation system more flexible and expandable, the backstage power circuit is composed of a high step-up converter and a pulsewidth-modulation (PWM) inverter. In the dc-dc power conversion, the high step-up converter is introduced to improve the conversion efficiency in conventional boost converters...
This paper presents sliding mode pulse width modulation (SMPWM) control methodologies for a current- controlled inverter. Discussion begins with circuit analysis, proper references, and design of sliding surfaces. Based on this formulation, two novel approaches adopt sliding mode concept are proposed to make the system tracking selected references. Three-phase currents and the neutral point voltage...
This study mainly develops a novel power control scheme for a stand-alone photovoltaic (PV) generation system. In order to make the PV generation system more flexibility and expandability, the later power circuit is composed of a high step-up converter and a pulse-width-modulation (PWM) inverter. In the DC-DC power conversion, the high step-up converter is introduced to improve the conversion efficiency...
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