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The inverter is a major component of a renewable energy system and its performance affects the overall performance of the system. For typical household applications in remote areas, often there is need to operate at low power conditions where inverter efficiency can drop dramatically. Efficient operation at low power is important especially for stand-alone applications in developing countries where...
In this paper, the switching losses of matrix converters (MCs) using various commutation methods are calculated with MATLAB/Simulink. The commutation methods of 2-steps current commutation, 4-steps current commutation, 2-steps voltage commutation, 4-steps voltage commutation, and 3-steps voltage current commutation are treated. This paper compares their switching losses and discusses their differences.
This paper presents the design analysis and improvement of an Insulated Gate Bipolar Transistor (IGBT) gate drive circuit for the magnet power supplies of accelerator systems. By exploring the effects of the gate driving current and resistance, a low noise gate driver was developed and evaluated. The dv/dt and di /dt values that affect voltage and current spikes are modeled through the physics-based...
The electrical loading and device rating are both important factors that determine the loss and thermal behaviors of power semiconductor devices. In the existing loss and thermal models, only the electrical loadings are focused and treated as design variables, while the device rating is normally pre-defined by experience with poor design flexibility. Consequently a more complete loss and thermal model...
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