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An analysis of the efficiency of AC/DC/AC diode-clamped multilevel converters is presented, where commanded and suitable variations of the DC-link voltages are proposed in order to decrease the energy losses. The study is carried out also aiming at the correct DC-link capacitor voltage balance, obtained with additional chopper stages together with a new PWM technique, considering both inverter and...
This paper discusses the iron loss characteristics of magnetic materials used in the chopper circuits of pulse width modulation (PWM) inverter circuits. A distinctive feature of this method, previously reported by the authors, is that the iron loss map is created by measuring the dynamic minor loop traced on the B-H plane, and it can be a useful method for calculation of the inductor iron loss in...
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