We proposed a two-phase PWM scheme using one variable switching pause period to equalize device losses in unbalance three-phase inverters. However, the two-phase PWM scheme did not effectively equalize losses of unbalanced three-phase inverter. Therefore, we propose a two-phase PWM scheme utilizing 2-degrees-of-freedom (2-DOF) variable switching pause periods. Some experimental results demonstrate that the proposed PWM scheme successfully equalizes the device losses of unbalance three-phase inverter.
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