Research on a direct torque control for an electrically excited synchronous motor drive with low ripple in flux and torque

Autor:	Hu Yuwen, Huang Wenxin, Zhong Tianyun, Zhou Yangzhong
Rok vydání:	2007
Předmět:	Physics Torque limiter Stall torque Vector control Direct torque control Torque motor Control theory Condensed Matter::Superconductivity Torque sensor Electrical and Electronic Engineering Damping torque Flux linkage Electronic Optical and Magnetic Materials
Zdroj:	Frontiers of Electrical and Electronic Engineering in China. 2:425-431
ISSN:	1673-3584 1673-3460
Popis:	The electrically excited synchronous motor (ESM) has typically small synchronous inductance values and quite low transient values because of the damper windings mounted on the rotor. Therefore, the torque and stator flux linkage ripples are high in the direct torque control (DTC) drive of the ESM with a torque and flux linkage hysteresis controller (basic DTC). A DTC scheme with space vector modulation (SVM) for the ESM was investigated in this paper. It is based on the compensation of the stator flux linkage vector error using the space vector modulation in order to decrease the torque and flux linkage ripples and produce fixed switching frequency under the principle that the torque is controlled by the torque angle in the ESM. Compared with the basic DTC, the results of the simulation and experiment show that the torque and flux linkage ripples are reduced, the maximum current value is decreased during the startup, and the current distortion is much smaller in the steady-state under the SVM-DTC. The field-weakening control is incorporated with the SVM-DTC successfully.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::eb8b20819d4894f9717ede2175a36aca https://doi.org/10.1007/s11460-007-0079-7 Zobrazit plný text záznamu Full text from SpringerLink