Title :
Dead time influence and compensation of direct torque control
Author :
Xin Qiu ; Wenxin Huang ; Feifei Bu ; Weijia Cui
Author_Institution :
Jiangsu Key Lab. of New Energy Generation & Power Conversion, Nanjing Univ. of Aeronaut. & Astronaut., Nanjing, China
Abstract :
The performance of direct torque control (DTC) is closely related to the precision of flux linkage which calculated by electromotive force (EMF), especially at low speed. To improve the torque performance of DTC, this paper analyzes the influence of dead-time and presents the corresponding compensation method. The influence of parasitic capacitances is taken into account for accurate compensation, and the indirect nonlinear compensation is proposed. The validity of the proposed method is verified by experimental tests.
Keywords :
AC motors; machine control; nonlinear control systems; torque control; DTC; dead time influence; direct torque control compensation; indirect nonlinear compensation; parasitic capacitances; AC motors; Capacitance; Couplings; Inverters; Pulse width modulation; Torque; Torque control;
Conference_Titel :
Electrical Machines and Systems (ICEMS), 2014 17th International Conference on
Conference_Location :
Hangzhou
DOI :
10.1109/ICEMS.2014.7013549
