Advanced Control of Matrix Converter Drive with Active Damping of the Input Resonance

Weight minimisation and high efficiency requirements set limitations on the Matrix Converters input filter. It is therefore important to suppress the potential input resonance without using a large damping resistor. The existing solutions trade off the AC drive output performance against the input side active damping. This paper draws important insights from a comprehensive overview of relevant literature. It proposes a different and novel approach based on optimal control design. Under this approach, a high performance closed loop control is performed on the output side, while the input current spectrum is effectively adjusted by strategic shaping of the output current noise. As a result, the desired damping of the input resonance is achieved.