A novel soft start method of super large capacity high voltage motor

The large current generated by starting directly of super large capacity and high voltage induction motor would have a huge impact on the grid as well as the motor itself. The variation of the power factor and electromagnetic torque during direct start of motors with different capacity and voltage l...

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Main Authors: Jiaxin Yuan, Chuansheng Wang, Yong Zhu, Baichao Chen
Format: Article
Language:English
Published: China Electrotechnical Society 2019-09-01
Series:CES Transactions on Electrical Machines and Systems
Subjects:
Online Access:https://ieeexplore.ieee.org/document/8858080
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author Jiaxin Yuan
Chuansheng Wang
Yong Zhu
Baichao Chen
author_facet Jiaxin Yuan
Chuansheng Wang
Yong Zhu
Baichao Chen
author_sort Jiaxin Yuan
collection DOAJ
description The large current generated by starting directly of super large capacity and high voltage induction motor would have a huge impact on the grid as well as the motor itself. The variation of the power factor and electromagnetic torque during direct start of motors with different capacity and voltage levels are obtained. Aiming at the problem that the secondary impact of auto-transformer starter is too large and the cost of magnetic control starter is too high, the auto-transformer and magnetic control soft start method of super large capacity and high voltage motor is proposed and the basic working principle is analyzed. The calculation formula of cost for magnetic control soft starter and auto-transformer and magnetic control soft starter is deduced, and specific examples are analyzed and compared. It is concluded that the choice of auto-transformer with appropriate tapping ratio can greatly reduce the cost of auto-transformer and magnetic control soft starter compared with the other one. Finally, the simulation and experiment results show that the start method can effectively avoid secondary current impact and constrain the motor starting current to less than 2.5 times the rated current.
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spelling doaj.art-cffe49ff3f604c5ca1ef6ef206921b212023-08-02T05:27:25ZengChina Electrotechnical SocietyCES Transactions on Electrical Machines and Systems2096-35642837-03252019-09-013330230810.30941/CESTEMS.2019.00040A novel soft start method of super large capacity high voltage motorJiaxin Yuan0Chuansheng Wang1Yong Zhu2Baichao Chen3Wuhan University, Wuhan, ChinaWuhan University, Wuhan, ChinaWuhan University, Wuhan, ChinaWuhan University, Wuhan, ChinaThe large current generated by starting directly of super large capacity and high voltage induction motor would have a huge impact on the grid as well as the motor itself. The variation of the power factor and electromagnetic torque during direct start of motors with different capacity and voltage levels are obtained. Aiming at the problem that the secondary impact of auto-transformer starter is too large and the cost of magnetic control starter is too high, the auto-transformer and magnetic control soft start method of super large capacity and high voltage motor is proposed and the basic working principle is analyzed. The calculation formula of cost for magnetic control soft starter and auto-transformer and magnetic control soft starter is deduced, and specific examples are analyzed and compared. It is concluded that the choice of auto-transformer with appropriate tapping ratio can greatly reduce the cost of auto-transformer and magnetic control soft starter compared with the other one. Finally, the simulation and experiment results show that the start method can effectively avoid secondary current impact and constrain the motor starting current to less than 2.5 times the rated current.https://ieeexplore.ieee.org/document/8858080auto-transformer buckmagnetic controllable reactorsuper large capacity high voltage induction motorsoft start
spellingShingle Jiaxin Yuan
Chuansheng Wang
Yong Zhu
Baichao Chen
A novel soft start method of super large capacity high voltage motor
CES Transactions on Electrical Machines and Systems
auto-transformer buck
magnetic controllable reactor
super large capacity high voltage induction motor
soft start
title A novel soft start method of super large capacity high voltage motor
title_full A novel soft start method of super large capacity high voltage motor
title_fullStr A novel soft start method of super large capacity high voltage motor
title_full_unstemmed A novel soft start method of super large capacity high voltage motor
title_short A novel soft start method of super large capacity high voltage motor
title_sort novel soft start method of super large capacity high voltage motor
topic auto-transformer buck
magnetic controllable reactor
super large capacity high voltage induction motor
soft start
url https://ieeexplore.ieee.org/document/8858080
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