Speaker
Wang HaiBing
(Center for Fusion Science)
Description
Study on 300MVA pulse generator starting system
HaiBing Wang, WeiMin Xuan, JianFei Peng, HuaJun Li, LiRong Xu, HaoTian Hu, li Kang
Southwestern Institute of Physics, Chengdu, Sichuan, China
For supplying power for HL-2M Tokamak, a new 300MVA pulse generator has been developed. The new generator with 400 tons of rotor to stored energy will be driven by an 8500kW asynchronous motor. The purpose of the research is how to reduce the startup current and start the motor steadily. One way is to use liquid resistors in series with the motor rotor. Simulation and calculation are made for motor rotor series of liquid resistors. The maximum series resistors, the starting current and starting time are obtained. And the cooling capacity to cooling liquid resistors and the temperature rise are achieved.
Series H-bridge multilevel high voltage varying frequency starting of winding asynchronous motor is another kind of high efficiency way to startup. In this paper, the cascade multilevel converter working principle is analyzed. Multiple transformation rectifier circuit is theoretically proved to eliminate lower than 6m±1 harmonic current. A simulation model of cascade multilevel inverter PWM control is built by the MATLAB/SMULINK, and pulse phase shift PWM control scheme is analyzed. The results show that the pulse phase shift PWM is a kind of multilevel PWM control scheme of the practical project.
Based on the abovementioned study, a starting equipment of rotor series of liquid resistors and a 6000V / 12000kVA high voltage variable frequency system are designed for 8500kW motor. The main circuit is introduced The test voltage and current waveform of the device are given, and the theoretical analysis and experimental results are basically consistent. At present, two sets of equipment are installed and debugging to be finished.
Co-authors
Hu HaoTian
(Center for Fusion Science, Southwestern Institute of Physics, Chengdu, China)
Kang Li
(Center for Fusion Science, Southwestern Institute of Physics, Chengdu, China)
Li HuaJun
(Center for Fusion Science, Southwestern Institute of Physics, Chengdu, China)
Peng Jian Fei
(Center for Fusion Science, Southwestern Institute of Physics, Chengdu, China)
Wang HaiBing
(Center for Fusion Science, Southwestern Institute of Physics, Chengdu, China)
Xu LiRong
(Center for Fusion Science, Southwestern Institute of Physics, Chengdu, China)
Xuan WeiMin
(Center for Fusion Science, Southwestern Institute of Physics, Chengdu, China)
