Control Method of Electrolytic Capacitor-Less Dual Inverter-Fed IPMSM under Periodic Load Torque Fluctuations

This paper proposes a control method for an electrolytic capacitor-less dual inverter compressors. Single-phase motor drive systems are required to minimize vibrations, maintain high power factor, and meet the limit harmonic current emissions. The proposed achieves reduction of dq-axis currents, low grid THD under periodic load torque fluctuations. effectiveness is demonstrated via experimental results, using open-end winding IPMSM inverter. reduced 100Hz components currents up 98% fluctuations compared with single results FFT analysis input show that factor equivalent or superior those conventional methods. Therefore, can effectively achieve vibration reduction, in