Title :
Effect of inverter’s dead-time on the dynamic characteristics of Permanent Magnet Synchronous Motor systems
Author :
Mingji, Liu ; ZhongQin, Cai ; Jing, Wang ; Xiangpeng, Wang
Author_Institution :
Sch. of Electr. & Electron. Eng., North China Electr. Power Univ., Beijing
Abstract :
This paper studies the effect of the inverterpsilas dead time on the dynamic characteristics of the Permanent Magnetic Synchronous Motor (PMSM) systems. Considering the harmonic magnetic field, the state space model and transfer function are given for the PMSM system. Furthermore, the effect of the dead-time on the output voltage of inverter is analyzed. The mathematical model, considering the dead-time of inverter, is established for the PMSM system. The theoretical analysis shows that the effect of the dead time can be regarded as a perturbation of the systempsilas static gain. The perturbation bound of the equivalent gain is given in theory. The correctness of the analysis result in this paper is verified by experiments.
Keywords :
invertors; permanent magnet motors; perturbation techniques; synchronous motor protection; dynamic characteristics; equivalent gain; harmonic magnetic field; inverter dead time; permanent magnet synchronous motor; perturbation bound; state space model; transfer function; DC motors; Hysteresis motors; Magnetic analysis; Mathematical model; Permanent magnet motors; Pulse width modulation inverters; Saturation magnetization; Synchronous motors; Torque control; Voltage; PMSM system; dead-time of inverter; nonlinearity; perturbation on equivalent gain;
Conference_Titel :
Electrical Machines and Systems, 2008. ICEMS 2008. International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-3826-6
Electronic_ISBN :
978-7-5062-9221-4
