期刊名称：International Journal on Electrical Engineering and Informatics
印刷版ISSN：2085-6830
出版年度：2019
卷号：11
期号：1
页码：183-194
DOI：10.15676/ijeei.2019.11.1.11
出版社：School of Electrical Engineering and Informatics
摘要：Some speed synchronization techniques of multiple electric motors system are wellknown such as master reference, master slave and cross coupling. The cross coupling techniqueis only applicable for two motors system whereas the master slave technique can be applied tomore than two motors but it provides a poor synchronization performance. This paper offers ahybrid cross coupling - master slave (CC-MS) technique with master selector for angular speedsynchronization which can be applied to more than two motors. In order to evaluate performance,this paper also proposes two performance indexes i.e. regulation performance index PI1 andsynchronization performance index PI2. A proportional integral derivative (PID) controller isequipped at each motor for speed feedback, and the speed coupling between motors is facilitatedby a coupling constant. An on-line master selector automatically selects the motor with the largestload as the master when the system is working. Values of the PID controller gains and thecoupling constant are determined using the pole placement method. The proposed hybrid CCMStechnique has been evaluated through computer simulations using a vehicle with fourpermanent magnet synchronous motors (PMSMs) in Matlab-Simulink® environment. Thevehicle is simulated moving at a downhill track where the load of four PMSMs drops one by onein sequence. Performance comparison was carried out between the proposed technique and thepreviously published techniques: master reference and CC-MS without master selector.Simulation results show that the proposed technique gives smaller PI1 and PI2 than the other twotechniques.
