Technical Dialogue Session
Devices and Components II
capacitor loss, reliability, lifetime, nonlinear loss
The authors propose a capacitor loss evaluation system for power electronics converters. When the DC link capacitor loss under PWM inverter excitation is evaluated, the nonlinear loss behavers are observed. The nonlinear loss characteristic is expressed by using a hysteresis curve in the Q-V plane. The hysteresis curve is changed by relaxation effect when rectangle excitation current has zero current phases and also duty ratio.