SPEED CONTROL OF A PERMANENT MAGNET SYNCHRONOUS MOTOR ACTUATED BY A THREE-PHASE MULTI LEVEL INVERTER

Abstract

This paper presents the design and FPGA embed-ded implementation of robust controller design to speed tracking problem for a Permanent Magnet Synchronous Motor (PMSM). Then, a linear controller based on the exact static error dynamics passive out-put feedback (ESEDPOF) is proposed, where the un-certainty estimation is taken into account. The technique of passivity requires knowing the load torque, this is estimated with a traditional reduced-order ob-server. PMSM is driven by a five levels Three-Phase Cascaded Cell Multi-Level Inverter (3Φ-CCMLI). The medium-scale field-programmable gate array (FPGA) Spartan-6 XC6SLX9 is used for implementing the ESEDPOF controller, the reduced-order observer, and the multilevel pulse width modulator. The par-allel processing provided by these devices allowed to obtain a sampling time of 10us. Simulation and Experimental validation shows an excellent dynamical performance.