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Recently, active power decoupling method is studied for reducing power oscillation on PV (Photovoltaic) module by grid side instantaneous power. However decoupling circuit input current delay and inverter system efficiency affect power oscillation when decoupling circuit is operating. This power oscillation disturbs MPPT (Maximum Power Point Tracking) control. To reduce power oscillation considering...
An interleaved active clamp flyback inverter using a synchronous rectifier for a photovoltaic AC module system is proposed. In a conventional single flyback inverter for the photovoltaic AC module system, this inverter has drawbacks of a conduction losses of each switch, transformer copper and high ripple current of capacitor. To overcome these problems, two flyback converter modules with interleaved...
In this paper, a new control strategy of an active clamped flyback inverter for a photovoltaic AC module system is proposed. In the flyback inverter, a voltage spike across a main switch is generated from a resonance between a leakage inductance and an output capacitance across the main switch. For reducing the voltage spike of the main switch, a snubber circuit is used. In case of the active clamp...
This paper presents a flyback inverter using voltage sensorless maximum power point tracking (MPPT) for AC module systems. In conventional MPPT technique, a PV voltage and PV current are required to calculate the PV output power for the MPPT operation. A proposed method only used for the PV current detection sensor to perform MPPT. When the PV current is sensed, proposed method calculates the electric...
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