パワーフローに着目したスイッチング電力変換回路の過渡解析

概要

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Most of the power converters including rectifiers and inverters with semiconductor devices are operated in on/off switching mode in order to reduce the conduction losses of the devices.The digital simmulation often plays an important role in analyzing both steady and transient behavior and optimizing the control schemes. Before starting the simmulation, the objective system should be carefully modeled to satisfy the final purpose of the analysis itself. In this short paper, a modeling technique of switching power converters based on the power flow is described, where each switching phenomena and resultant harmonics are ignored for simplisity and only the dominant power flow affecting its dynamic behavior is taken into account. First, the definition and the feature of the instantaneous space vector, which is necessary for describing the three-phase ac system, is carefully explained. Secondly, a transient analysis at initial startup of a high-frequency inverter is shown as a typical example applying the concept of instantaneous space vector and power flow.
東京工芸大学の論文
1994-01-31