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In this paper, a control strategy of bidirectional converter for energy storage system in photovoltaic hybrid modules is proposed. The bidirectional converter for energy storage system (ESS) with battery is connected with DC link in parallel which is located between current source flyback converters and unfolding bridge. Because output currents which are generated by flyback converters are rectified...
In this paper, a soft switching single inductor push-pull converter is proposed. A push-pull converter is suitable for a low power photovoltaic (PV) AC module system because the step-up ratio of a high frequency transformer is high and the number of primary side switches is relatively small. But conventional push-pull converters do not have high efficiency because of high switching losses by hard...
A soft switching interleaved active clamp flyback inverter for a photovoltaic AC module system is proposed. The proposed system includes an interleaved active clamp flyback converter and an unfolding bridge inverter. The interleaved active clamp flyback converter has the advantages of zero voltage switching (ZVS) performance for the primary switches, reverse-recovery problem alleviation for the secondary...
In order to reduce size of bidirectional DC-DC converter, conventional topologies using hard switching method operate with high frequency. As switching frequency is getting higher, switching loss is increased. Conventionally an auxiliary circuit is implemented by using soft switching method in order to overcome this drawback,. The switch of the auxiliary circuit, however, is operated as hard switching...
This paper proposes a photovoltaic parallel resonant dc-link soft switching inverter using hysteresis current control. The proposed system includes a dc-link switch for soft switching. When the dc-link switch is turned off, the inverter switches are turned on and off with zero voltage switching using hysteresis current controller. So, all of the switches in the proposed inverter are turned on and...
In this paper, ZVS resonant DC-link inverter using soft switching boost converter is proposed. In the resonant inverter consisted of converter stage and inverter stage, converter stage switches S1, S2 are turned on and off with zero-voltage-switching (ZVS) and zero-current-switching (ZCS), and inverter stage switches S3, S4, S5, S6 and S7, are turned on and off with ZVS. As a result, the proposed...
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