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Research of Parallel-connected Multi-induction Motor Drive System

Author: ZhangZuoZuo
Tutor: ZhouXiFeng
School: Nanjing University of Posts and Telecommunications
Course: Control Theory and Control Engineering
Keywords: Multi - induction motor Parallel drive Vector control
CLC: TM346
Type: Master's thesis
Year: 2011
Downloads: 18
Quote: 0
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Abstract


Urban rail transit is in a period of rapid development , rail transit traction system is headed towards the development of light weight, small size , low cost and high reliability direction . Rail transit traction drive system , usually with a single inverter to drive a two -or four- AC traction motor , when the single induction motor control strategy can not meet the requirements , it is necessary to study multiple induction motors in parallel driven control strategy and control system . This article on single induction motor vector control principle dynamic mathematical model of the three-phase induction motor rotor flux oriented vector control system model . Then for the two induction motor parameters and load inconsistencies in the original single induction motor direct magnetic field oriented vector control model based on combined average thinking to design a parallel drive a double induction motor vector control system , and for no-load simulation analysis and load imbalance . Simulation results show that : the system is able to get a good steady performance and dynamic performance . Four induction motors are driven in parallel vector control principle followed by in-depth study , four induction motor driven in parallel magnetic chain model and the derivation of the torque model , designed vector control system of of four parallel induction motor drive . PI control AC speed system limitations , in order to make the system for better performance , fuzzy speed controller PID controller is applied to the system , and the conventional PI controller and fuzzy PID controller system simulation . Simulation results show that , either at startup or runtime load balancing , by contrast , based on fuzzy adaptive PID controller system to better running smoothly , and has a good dynamic and static performance last article derived multiple dynamic model of the induction motor driven in parallel . The research program in this article on the significance of rail transportation .

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CLC: > Industrial Technology > Electrotechnical > Motor > AC motor > Induction motor
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