A Study of Quasi Multi-rate Deadbeat Control for Modular Multi-level Converter using FPGA based Hardware controller

Currently, modular multi-level converters (MMC) are attracting attention as the next generation of high-capacity power converters. For the control of the MMC, PI control is widely used. On the other hand, the deadbeat control and/or the model predictive control was applied as for the model based digital control method, and the superior characteristics were obtained. In this paper, a quasi multi-rate deadbeat control for MMC was proposed using a PWM hold method. Applying FPGA based hardware controller, instantaneous control calculation can be carried out which result in the ideal digital control feedback system. The advantages of the proposed method were verified through simulations and experiments.

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