A three-stage energy router with modified transformer and improved voltage balance strategy

2018 ◽  
Author(s):  
Hanyang Yu ◽  
Wenxi Yao ◽  
Zhengyu Lu ◽  
Yu Ji
Keyword(s):  
Voltage Balance ◽  
Balance Strategy

An Educational Platform for Cascade PWM STATCOM

2015 ◽  
Vol 719-720 ◽  
pp. 470-474
Author(s):  
Yan Jie Zhang ◽  
Zhi Heng Xu ◽  
Zhuang Zhuang Zheng ◽  
Ji Xin Wang ◽  
Yu Hai Liu
Keyword(s):  
Low Voltage ◽  
Power Grid ◽  
Training System ◽  
Dc Voltage ◽  
Load Disturbance ◽  
Imaginary Power ◽  
Voltage Balance ◽  
Balance Strategy ◽  
Star Configuration

This paper presents a training system based on low-voltage cascaded PWM STATCOM.It is intended to train the employee in power grid companies.The system is characterized by load disturbance in 380-V power grid and imaginary power compensation of transformerless cascade PWM STATCOM with star-configuration. A two-hierarchy DC voltage balance strategy is adopted to stabilize the H-bridge capacitors in the compensation procedure. Simulation and experimental waveform indicate that a 380V-20kvar cascade STATCOM with star-configuration compensate the the imaginary power shortage within 20ms.

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