Integral Plus Resonant Sliding Mode Direct Power Control for VSC-HVDC Systems under Unbalanced Grid Voltage Conditions
An integral plus resonant sliding mode direct power control (IRSMC DPC) strategy for voltage source converter high voltage direct current (VSC-HVDC) systems under unbalanced grid voltage conditions is proposed in this paper. Through detailed instantaneous power flow analysis, a generalized power com...
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doaj-119044eaf4c140049f6d0044d906635b2020-11-25T00:53:15ZengMDPI AGEnergies1996-10732017-10-011010152810.3390/en10101528en10101528Integral Plus Resonant Sliding Mode Direct Power Control for VSC-HVDC Systems under Unbalanced Grid Voltage ConditionsWeipeng Yang0Aimin Zhang1Jungang Li2Guoqi Li3Hang Zhang4Jianhua Wang5School of Electrical Engineering, Xi’an Jiaotong University, No. 28, West Xianning Road, Xi’an 710049, ChinaSchool of Electrical Engineering, Xi’an Jiaotong University, No. 28, West Xianning Road, Xi’an 710049, ChinaXuji Group Corporation, State Grid Corporation of China, No. 1298, Xuji Road, Xuchang 461000, ChinaDepartment of Precision Instrument, Tsinghua University, No. 30, Shuangqing Road, Beijing 100084, ChinaSchool of Electrical Engineering, Xi’an Jiaotong University, No. 28, West Xianning Road, Xi’an 710049, ChinaSchool of Electrical Engineering, Xi’an Jiaotong University, No. 28, West Xianning Road, Xi’an 710049, ChinaAn integral plus resonant sliding mode direct power control (IRSMC DPC) strategy for voltage source converter high voltage direct current (VSC-HVDC) systems under unbalanced grid voltage conditions is proposed in this paper. Through detailed instantaneous power flow analysis, a generalized power compensation method, by which the ratio between the amplitude of active and reactive power ripples can be controlled continuously, is obtained. This enables the system to provide flexible power control, so that the desired performance of the system on both the ac and dc sides can be attained under different operating conditions. When the grid voltage is unbalanced, one or both of the active and reactive power terms contain ripples, oscillating at twice the grid frequency, to obtain non-distorted ac current. A power controller consisting of the proportional, integral and resonant control laws is designed using the sliding mode control approach, to achieve accurate power control objective. Simulation studies on a two-terminal VSC-HVDC system using MATLAB/SIMULINK (R2013b, Mathworks, Natick, MA, USA) are conducted to verify the effectiveness of the IRSMC DPC strategy. The results show that this strategy ensures satisfactory performance of the system over a wide range of operating conditions.https://www.mdpi.com/1996-1073/10/10/1528VSC-HVDCdirect power controlgrid voltage unbalancesliding mode controlintegral controlresonant control |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Weipeng Yang Aimin Zhang Jungang Li Guoqi Li Hang Zhang Jianhua Wang |
spellingShingle |
Weipeng Yang Aimin Zhang Jungang Li Guoqi Li Hang Zhang Jianhua Wang Integral Plus Resonant Sliding Mode Direct Power Control for VSC-HVDC Systems under Unbalanced Grid Voltage Conditions Energies VSC-HVDC direct power control grid voltage unbalance sliding mode control integral control resonant control |
author_facet |
Weipeng Yang Aimin Zhang Jungang Li Guoqi Li Hang Zhang Jianhua Wang |
author_sort |
Weipeng Yang |
title |
Integral Plus Resonant Sliding Mode Direct Power Control for VSC-HVDC Systems under Unbalanced Grid Voltage Conditions |
title_short |
Integral Plus Resonant Sliding Mode Direct Power Control for VSC-HVDC Systems under Unbalanced Grid Voltage Conditions |
title_full |
Integral Plus Resonant Sliding Mode Direct Power Control for VSC-HVDC Systems under Unbalanced Grid Voltage Conditions |
title_fullStr |
Integral Plus Resonant Sliding Mode Direct Power Control for VSC-HVDC Systems under Unbalanced Grid Voltage Conditions |
title_full_unstemmed |
Integral Plus Resonant Sliding Mode Direct Power Control for VSC-HVDC Systems under Unbalanced Grid Voltage Conditions |
title_sort |
integral plus resonant sliding mode direct power control for vsc-hvdc systems under unbalanced grid voltage conditions |
publisher |
MDPI AG |
series |
Energies |
issn |
1996-1073 |
publishDate |
2017-10-01 |
description |
An integral plus resonant sliding mode direct power control (IRSMC DPC) strategy for voltage source converter high voltage direct current (VSC-HVDC) systems under unbalanced grid voltage conditions is proposed in this paper. Through detailed instantaneous power flow analysis, a generalized power compensation method, by which the ratio between the amplitude of active and reactive power ripples can be controlled continuously, is obtained. This enables the system to provide flexible power control, so that the desired performance of the system on both the ac and dc sides can be attained under different operating conditions. When the grid voltage is unbalanced, one or both of the active and reactive power terms contain ripples, oscillating at twice the grid frequency, to obtain non-distorted ac current. A power controller consisting of the proportional, integral and resonant control laws is designed using the sliding mode control approach, to achieve accurate power control objective. Simulation studies on a two-terminal VSC-HVDC system using MATLAB/SIMULINK (R2013b, Mathworks, Natick, MA, USA) are conducted to verify the effectiveness of the IRSMC DPC strategy. The results show that this strategy ensures satisfactory performance of the system over a wide range of operating conditions. |
topic |
VSC-HVDC direct power control grid voltage unbalance sliding mode control integral control resonant control |
url |
https://www.mdpi.com/1996-1073/10/10/1528 |
work_keys_str_mv |
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