Research on single-stage inverter based on bi-directional Buck DC converter

Ma, Yong; Qiu, Bin; Qing, C.X.

doi:10.1109/pedg.2010.5545842

Cited by 3 publications

References 1 publication

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An Isolated Single-Stage Four-Quadrant Inverter With Energy Storage Capacitor

Hong

Shen³

et al. 2021

IEEE Access

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In this paper, a single-stage full-bridge inverter with energy storage capacitor is proposed. The high-frequency transformer is used to achieve boosting voltage and electrical isolation. The energy storage capacitor is introduced in the secondary side and the stored energy is fed back into the bus capacitor through the body diode when energy is fed back reversely. Accordingly when energy flows forward, the energy stored in the bus capacitor is released to reach the energy balance of bus capacitor in each power frequency cycle, and thereby achieve the four-quadrant operation of inverter. Thus, problems of energy being fed back into the DC bus directly and increasing complexity of circuit are avoided. When the inverter is connected to the grid, the bus capacitor can be disconnected from the circuit and a single-phase singlestage grid-connected inverter is achieved. The operating principle and control strategy of the topology are analyzed in detail and the feasibility is proved by experiments.

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An Isolated Single-Stage Four-Quadrant Inverter With Energy Storage Capacitor

Hong

Shen³

et al. 2021

IEEE Access

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Dynamic characteristics of boost inverter with waveform control

Zhu

Xiao

Wang

et al. 2014

2014 IEEE Applied Power Electronics Conference and Exposition - APEC 2014

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The input current of single-phase inverter typically has an AC ripple component at twice the output frequency. The low-frequency current ripple can cause a reduction in both the operating lifetime of its DC source and the energy conversion efficiency of the system. In this paper 1 , a proposed waveform control method which can eliminate such a ripple current in boost inverter system, is discussed. The characteristics of the waveform control method in boost inverter under input voltage or wide range load variations are studied. It is validated that by including an output current feedback loop into the waveform control method, the reference voltage of the boost inverter capacitors can be instantaneously adjusted to match the new load, thereby achieving ripple mitigation for a wide load range. With the control and feedback mechanism, there is minimal level of 2ω component at the DC bus during steady state, and the transient response is rapid with negligible effect on the output voltage. Analysis, simulation and experimental results are presented to support the investigation.

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Differential DC-DC converter mode three-level inverters

2012

Proceedings of the 7th International Power Electronics and Motion Control Conference

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Research on single-stage inverter based on bi-directional Buck DC converter

Cited by 3 publications

References 1 publication

An Isolated Single-Stage Four-Quadrant Inverter With Energy Storage Capacitor

An Isolated Single-Stage Four-Quadrant Inverter With Energy Storage Capacitor

Dynamic characteristics of boost inverter with waveform control

Differential DC-DC converter mode three-level inverters

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