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Zero-current switching technique for constant voltage constant frequency sinusoidal PWM inverter

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Abstract

In this paper, a new control strategy for zero-current transition technique is suggested to constant voltage constant frequency sinusoidal PWM inverter. This strategy consists of a resonant arm and auxiliary switches, which are connected to a standard single-phase full-bridge voltage source inverter and also to a proportional integral voltage controller. The main and auxiliary switches can be separately controlled. The suggested strategy is able to reduce switching losses successfully, and also it does not need any snubber circuit. By using appropriate switching algorithms, the strategy can be applied to uninterruptible power supplies, photovoltaic systems and DC/AC inverters as well. In this study, not only the theoretical analysis but the simulations of the suggested strategy have been carried out effectively. From the simulation results, it has been shown that the suggested strategy yields 30% less switching losses and has better performance when compared with the hard switching strategy for the same operating condition, including the conditions of the load and the switching frequency. Eventually, the suggested control scheme verified by the simulation results proves that it can achieve low THD values in addition to less switching losses.

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Authors and Affiliations

  1. Department of Electrical-Electronics Engineering, Faculty of Technology, Gazi University, Ankara, Turkey

    Nihat Öztürk, Orhan Kaplan & Emre Çelik

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  1. Nihat Öztürk
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  2. Orhan Kaplan
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  3. Emre Çelik
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Correspondence to Nihat Öztürk.

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Öztürk, N., Kaplan, O. & Çelik, E. Zero-current switching technique for constant voltage constant frequency sinusoidal PWM inverter. Electr Eng 100, 1147–1157 (2018). https://doi.org/10.1007/s00202-017-0577-4

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  • DOI: https://doi.org/10.1007/s00202-017-0577-4

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