Output filter control for matrix converter in synchronous applications

In this paper, the design of an output filter for the matrix converter when it operates as series and shunt power compensator is presented. For each of the synchronous grid-tie applications mentioned, the matrix converter is modeled as a voltage and current source correspondingly. The developed filter is comprised only by passive storage elements, in order to improve the efficiency of the overall compensation system and its design is based on a linear control law. Since the proposed filter topology does not include passive damping elements, the control strategy utilized ensures the stability and an adequate transient response of the compensator. The operating limits of the compensator are found analytically, which indicate the maximum power that can be injected to the main grid under the operative conditions considered. Finally, detailed simulations were carried out in order to demonstrate the effectiveness of the proposed filter design and the results obtained are used to verify the proper operation of the matrix converter in power compensation applications.