Design procedure for output current control and damping control of matrix converter

This paper presents a design procedure for an output current control and an output damping control of a matrix converter to suppress LC filter resonance and improve transient current response. With a conventional design method which gives preference to stability, the output damping control causes a large output current overshoot and a control bandwidth of the output current is affected. Therefore, in order to obtain a desired transient response keeping a stable operation, this paper describes a modified control block diagram which a reference filter is added in to suppress the output current overshoot and a detailed design procedure using Bode-diagrams and a flowchart. From the experimental results, the output damping control designed with the proposed method suppresses the filter resonance, which results in stable operation. In addition, the proposed design method reduces the output current overshoot of 60% and an error between the desired and the obtained control bandwidth in comparison with the conventional method in experiments.