Parameters Designing of Slide Mode Variable Structure Controller of Bus Voltage of DC Microgrid Based on Proportion Switching Function

Constant value control of the DC-bus voltage is a essential problem of the control system of the DC microgrids. DC-DC converters are applied in parallel to realize the transform of energy from the distributed generations (DGs) to the DC-bus. Droop control methods are applied to the DC-bus voltage wh...

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Main Authors: Sun Zhenchuan, Zhang Jiasheng, Guo Zhen
Format: Article
Language:English
Published: EDP Sciences 2017-01-01
Series:MATEC Web of Conferences
Online Access:https://doi.org/10.1051/matecconf/201710001002
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author Sun Zhenchuan
Zhang Jiasheng
Guo Zhen
author_facet Sun Zhenchuan
Zhang Jiasheng
Guo Zhen
author_sort Sun Zhenchuan
collection DOAJ
description Constant value control of the DC-bus voltage is a essential problem of the control system of the DC microgrids. DC-DC converters are applied in parallel to realize the transform of energy from the distributed generations (DGs) to the DC-bus. Droop control methods are applied to the DC-bus voltage while PI controllers are used in controlling the duty ratios of the converters. This method may bring out the slow response speed of the system accompanied by the large ripple of the voltage. The slide mode variable structure control can speed up the response and reduce the ripple of the voltage as well. In the traditional slide mode control based on the proportion switching function, the denominator of the transfer function of the controlled plant is a second-order characteristic polynomial without the constant term. The denominators of the transfer functions of the buck DC-DC converters contain the constant terms. The designing of the parameters of the slide mode control based on the proportion switching function is analyzed based on mathematics deductions. Simulation results show that the selected parameters can not only speed up the response of the system but also greatly reduce the ripple of the voltage.
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spelling doaj.art-8adf53ee38264ba3b48f98f2d3a5f2da2022-12-21T22:49:09ZengEDP SciencesMATEC Web of Conferences2261-236X2017-01-011000100210.1051/matecconf/201710001002matecconf_gcmm2017_01002Parameters Designing of Slide Mode Variable Structure Controller of Bus Voltage of DC Microgrid Based on Proportion Switching FunctionSun ZhenchuanZhang Jiasheng0Guo ZhenCollege of Information and Control Engineering, China University of Petroleum(East China)Constant value control of the DC-bus voltage is a essential problem of the control system of the DC microgrids. DC-DC converters are applied in parallel to realize the transform of energy from the distributed generations (DGs) to the DC-bus. Droop control methods are applied to the DC-bus voltage while PI controllers are used in controlling the duty ratios of the converters. This method may bring out the slow response speed of the system accompanied by the large ripple of the voltage. The slide mode variable structure control can speed up the response and reduce the ripple of the voltage as well. In the traditional slide mode control based on the proportion switching function, the denominator of the transfer function of the controlled plant is a second-order characteristic polynomial without the constant term. The denominators of the transfer functions of the buck DC-DC converters contain the constant terms. The designing of the parameters of the slide mode control based on the proportion switching function is analyzed based on mathematics deductions. Simulation results show that the selected parameters can not only speed up the response of the system but also greatly reduce the ripple of the voltage.https://doi.org/10.1051/matecconf/201710001002
spellingShingle Sun Zhenchuan
Zhang Jiasheng
Guo Zhen
Parameters Designing of Slide Mode Variable Structure Controller of Bus Voltage of DC Microgrid Based on Proportion Switching Function
MATEC Web of Conferences
title Parameters Designing of Slide Mode Variable Structure Controller of Bus Voltage of DC Microgrid Based on Proportion Switching Function
title_full Parameters Designing of Slide Mode Variable Structure Controller of Bus Voltage of DC Microgrid Based on Proportion Switching Function
title_fullStr Parameters Designing of Slide Mode Variable Structure Controller of Bus Voltage of DC Microgrid Based on Proportion Switching Function
title_full_unstemmed Parameters Designing of Slide Mode Variable Structure Controller of Bus Voltage of DC Microgrid Based on Proportion Switching Function
title_short Parameters Designing of Slide Mode Variable Structure Controller of Bus Voltage of DC Microgrid Based on Proportion Switching Function
title_sort parameters designing of slide mode variable structure controller of bus voltage of dc microgrid based on proportion switching function
url https://doi.org/10.1051/matecconf/201710001002
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AT zhangjiasheng parametersdesigningofslidemodevariablestructurecontrollerofbusvoltageofdcmicrogridbasedonproportionswitchingfunction
AT guozhen parametersdesigningofslidemodevariablestructurecontrollerofbusvoltageofdcmicrogridbasedonproportionswitchingfunction