Design of a Novel T-LCL Immittance Conversion Circuit for Dynamic and Non-Linear Loads

In recent years, the immittance conversion topology (Oguchi et al., 2001) has become attractive as a novel power conversion strategy because of its features that a constant voltage source is converted to a constant current source and vice versa. However, the design of an ideal immittance circuit in the high-power (~kW) and high-frequency (~MHz) range is practically very important, especially when apply to a dynamic and non-linear load such as induction plasma. In this article, the design and development of an ideal T-LCL immittance circuit is reported. The performance of the designed immittance circuit is analysed by using a time-varying inductive plasma load.