Abstract
The iron losses of three-phase inductor used in a three-phase pulse-width modulation (PWM) inverter are evaluated. First we clarify three-phase inductor design in order to make same inductance value between the each phase. Then based on the design, iron losses for various structure of inductor are simulated. Simulation result shows the iron loss can be reduced about 5% by changing structure from conventional structure. Finally, we create conventional type and newly designed inductor and measure iron loss on a real PWM inverter. In the experiment, iron loss can be reduced about 10% compared with conventional type. Furthermore the calculated agree with measured losses within 10%. The iron loss reduction is verified by simulation and experiment.
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