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A METHOD FOR REDUCING HARMONICS IN OUTPUT VOLTAGES OF DOUBLE CONNECTED INVERTER
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| Author(s) |
Shoji Iida; Junichi Shimomura; Shigeo Masukawa; Shota Miyairi; Yasuyuki Nishida |
| Abstract |
A new effective method for reducing harmonics involved in output voltages of the voltage source inverter is proposed. This method is based on the sophisticated utilization of the auxiliary single phase push-pull inverter. The features of this method can be considered to be very simple and very economical in circuit configuration in spite of distinguished effectiveness for reducing harmonics. For example, by adding only two switching elements and an auto-transformer with three taps to the 6-step inverter, the proposed circuit behaves as a 24-step inverter in regard to the harmonics involved in the output voltages, neither with multi-sequential or multi-parallel divisions nor a phase-shifting transformer. In this paper, the basic theories of the proposed inverter in emphasizing the analysis of the waveforms of output voltages are treated, and the optimum parameters of the circuit are searched. |
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| Filename: | Unnamed file |
| Filesize: | 565.3 KB |
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| Type |
Members Only |
| Date |
Last modified 2021-02-23 by System |
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