Power flow of photovoltaic system using buck-boost PWM power inverter

Embedding PV and WF Models into Steady State Studies by an Optimization Strategy

“…In this paper, one class of such models is presented. However, there exist a variety of propositions that could be better adapted to the specific local industry necessities [4,9,13,22,[24][25][26].…”

“…There are three types of PV system models: model based on characteristics of PV array [5,6], model based on characteristics of specific inverter structure [7][8][9][10] and overall PV system model [11]. The first model mainly considers characteristics of PV array and some approximations are applied to other components.…”

Efficiency based Evaluation on Inverter topologies with soft switching Techniques

“…Fig9 shows a buck-boost PWM inverter by combining two sets of buck-boost converter together following the H-bridge. A small reactor is used as energy storage component [8]. The current in inductance operates in DCM and sinusoidal output is obtained by repeating those discontinuous conduction periods in every SPWM intervals.…”

Photovoltaic power interface circuit incorporated with a buck-boost converter and a full-bridge inverter

“…To alleviate the cost problem, several inverter topologies have been presented [1][2][3][4]. Among them, a single-phase utility interactive photovoltaic-system including a currentsource pulse width modulation (PWM) inverter was presented [1].…”

“…To alleviate the cost problem, several inverter topologies have been presented [1][2][3][4]. Among them, a single-phase utility interactive photovoltaic-system including a currentsource pulse width modulation (PWM) inverter was presented [1]. It can transfer arbitrary power generated by a solar array to loads or utility lines regardless of Nomenclature C DC dc-link capacitor C F output filter capacitor E stored energy in the input inductor i DC diode current i L input inductor current i Lpeak the peak of the input inductor current i out output current i P input solar-array current L input inductor L F output filter inductor L line line inductance P out output power Q A buck-boost switch Q 1 , Q 2 , Q 3 , Q 4 full-bridge switches R o minimum output resistance T on on-time of switches T s switching period V DC voltage across dc-link capacitor V P input solar-array voltage V s ac utility line-voltage h the angle by which i out lags v S x 1 the fundamental output frequency the magnitude of the generated array voltage.…”