Dead-time compensation for PMSM with phase shift of impedance considered based on adaptive linear neuron method

A new adaptive-linear-neuron- (ADALINE-) based dead-time compensation method is presented for permanent magnet synchronous motor (PMSM) drives. It is proposed to suppress the sixth current harmonics adaptively in the synchronous reference frame due to dead-time effects. In order to extract the sixth current harmonics, two ADALINE-based extractors are used without taking into account the electrical lead angle. An improved ADALINE algorithm is used to calculate compensation voltages, taking into account the phase shift of impedance. The proposed method is capable of operating not only at low speed but also at medium and rated speeds in contrast to the traditional compensation method of ADALINE only at low speed. The new method is effective in steady, load dynamic and speed dynamic states with no needs for any extra hardware to detect phase current polarity. The effectiveness of the proposed compensation method is verified on a 780 W PMSM drive through experiments. A new ADALINE based dead-time compensation method is presented for PMSM drives to suppress the sixth current harmonics adaptively. This method can work not only at low speed but also at medium and rated speeds, and it is effective in steady, load dynamic and speed dynamic states. It is verified on a 780 W PMSM drive through experiments. image