I-F Control With Zero $D$-Axis Current Operation for Surface-Mounted Permanent Magnet Synchronous Machine Drives

This article deals with I-f control of surface-mounted permanent magnet synchronous machine (SPMSM) drives. Conventional open-loop is poorly damped and can only operate stably positive $d$ -axis current. An a new current compensation loop proposed to achieve stable notation="LaTeX">$i_{\mathrm{d}}=0$ operation in this work. The method be used for startup seamless transition sensorless field-oriented-control (FOC), since already achieved before switching FOC. In addition, as the now maintain against 100% rated load step disturbance from 10% speed, it could standalone scheme wide-speed-range operations. supported detailed stability analysis its performance verified experimentally on 2.7-kW SPMSM drive platform.