Modeling and Simulation for Inter-harmonics of Double PWM AC Speed Control System for Port Bridge Crane

Authors

Wenhuan Yang, 1. School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;;
Dirui Yang, 1. School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;;
Ronggao Li, 2. Tongsheng Electricity Power Company Ltd., Pudong District, Shanghai 200122, China;

Abstract

Abstract: When the total capacity of double PWM reversible speed control system in distribution network accounts for a larger proportion of power grid capacity, the power quality pollution, or even voltage flicker is generated by interharmonics of double PWM system. Therefore the stable operation of the power grid is affected. Based on the studies on bridge crane system in Shanghai Deep water Port area, a mathematical model of multi-quadrant double PWM reversible speed control system was established. In accordance with the operating characteristics of motor, the inter-harmonic currents, injected into grid were simulated at different speeds respectively in the power and feed state. Simulation outcomes and measured results both proved the feasibility and validity of the model. The reasons for voltage flicker in distribution network were revealed by the model, and the model has been applied successfully in the power quality control system of Shanghai Deep water Port areaand themicro-grid voltage flicker problems have been successfully solved.

Recommended Citation

Yang, Wenhuan; Yang, Dirui; and Li, Ronggao (2020) "Modeling and Simulation for Inter-harmonics of Double PWM AC Speed Control System for Port Bridge Crane," Journal of System Simulation: Vol. 29: Iss. 7, Article 26.
DOI: 10.16182/j.issn1004731x.joss.201707026
Available at: https://dc-china-simulation.researchcommons.org/journal/vol29/iss7/26

First Page

1596

DOI Link

https://doi.org/10.16182/j.issn1004731x.joss.201707026

Last Page

1604

CLC

U231.92;TP391

Recommended Citation

Yang Wenhuan, Yang Dirui, Li Ronggao. Modeling and Simulation for Inter-harmonics of Double PWM AC Speed Control System for Port Bridge Crane[J]. Journal of System Simulation, 2017, 29(7): 1596-1604.

DOI

10.16182/j.issn1004731x.joss.201707026