1. Shen, H., Xu, J., Yu, B., Tang, Q., Chen, B., Lou, C., Qiao, Y.: Seamless transition strategy for wide speed-range sensorless IPMSM drives with a virtual q-axis inductance. J Power Electron. 19(5), 1224–1234 (2019)
2. Liu, G., Yang, Y., Chen, Q.: Virtual signal injected MTPA control for DTC five-phase IPMSM drives. J Power Electron. 19(4), 956–967 (2019)
3. Chaoui, H., Okoye, O., Khayamy, M.: Current sensorless MTPA for IPMSM drives. IEEE/ASME Trans. Mechatron. 22(4), 1585–1593 (2017)
4. Li, K., Wang, Y.: Maximum torque per ampere (MTPA) control for IPMSM drives using signal injection and an MTPA control law. IEEE Trans. Ind. Inf. 15(10), 5588–5598 (2019)
5. Uddin, M.N., Radwan, T.S., Rahman, M.A.: Performance of interior permanent magnet motor drive over wide speed range. IEEE Trans. Energy Convers. 17(1), 79–84 (2002)