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In this paper, a new isolated DC-AC converter with “sinusoidal shape” output voltage is analyzed, simulated and verified with a scaled prototype. Design expressions for selection of passive component values and design requirements of power semiconductor devices are given. The control algorithm is thoroughly investigated. The converter losses based on the commercially available semiconductors are calculated...
IGBT are the most important power semiconductor in high power converter [1,2,3,4] up to the MW range. To reduce the switching losses, Field-Stop-IGBTs are used in high voltage applications in comparison with Non-Punch-Through-IGBTs [5]. To increase the current carrying capacity of converters, for example in high power traction applications, it is common to connect IGBTs in parallel. Gate drive circuits...
Active Voltage Control (AVC) is an implementation of classic Proportional-Derivative (PD) control and multi-loop feedback control to force an IGBT to follow a pre-set switching trajectory. Previously, AVC was mainly used for controlling series-connected IGBTs in order to enable voltage balance between IGBTs. In this paper, the nonlinear IGBT turn-off transient is further discussed and the turnoff...
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