TY - CONF T1 - Flux-weakening characteristics of trapezoidal back-emf machines in brushless DC and AC modes JO - Conference Proceedings Ipemc 2006 Ces IEEE 5th International Power Electronics and Motion Control Conference PY - 2007/12/01 AU - Zhu ZQ AU - Shen JX AU - Howe D ED - DO - DOI: 10.1109/IPEMC.2006.297203 VL - 2 SP - 908 EP - 912 Y2 - 2025/11/14 ER -