This paper proposes a novel hybrid active power filter (HAPF) topology based on the cascaded connection of the AC-side capacitor and the third-order LCL-filter, which has the advantage of the conventional hybrid filter and the LCL-filter in terms of reduced dclink voltage and better switching ripple attenuation. The robust deadbeat control law is derived for the current loop, with special empha...

This paper proposes a sliding-mode position estimation method for high-speed surface-mounted permanent magnet synchronous machines with LCL filter. The implementation of the filter aims at smoothing motor current and reducing iron loss caused by harmonic currents. Firstly, discrete-time model LCL-filtered drive system is developed. Based on developed model, observer proposed more robustness aga...