基于内模原理的煤矿静止无功发生器滑模电流解耦控制
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摘要
为了有效提高煤矿供电系统的电能质量,提出了一种适用于静止无功发生器(VSG)的基于内模原理的滑模电流解耦控制算法。采用内模控制来实现对理想VSG解耦模型的控制,保证系统动态响应速度;使用滑模控制实现dq轴电流解耦,同时提高系统对参数摄动和外部扰动的鲁棒性。仿真结果表明,该控制策略提高了系统动态性能,有效改善了输出电流波形质量。
In order to improve the power quality of mine power supply system, a decoupled current control with sling-mode control based on internal model for static var generator(VSG). In this method,the internal model control was used to control an ideal VSG decoupled model, which was directly related to the system dynamic response performance. The sliding-mode control was used to decouple dq currents, which had great contribution to the robustness of parameter uncertainties and disturbances in the current loops. Simulation results prove that the control method has a good control performance,which can effectively improve the waveform quality of output current.
In order to improve the power quality of mine power supply system, a decoupled current control with sling-mode control based on internal model for static var generator(VSG). In this method,the internal model control was used to control an ideal VSG decoupled model, which was directly related to the system dynamic response performance. The sliding-mode control was used to decouple dq currents, which had great contribution to the robustness of parameter uncertainties and disturbances in the current loops. Simulation results prove that the control method has a good control performance,which can effectively improve the waveform quality of output current.
引文
[1]李桂丹.矿用静止无功发生器的重复PI控制策略研究[J].煤炭技术,2016,35(12):275-277.
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[3]刘丽丽,蒋玉凤.煤矿10k V链式STATCOM关键技术的研究[J].煤炭技术,2015,34(4):285-287.
[4]刘辉,唐朝晖,杨赛强,等.基于模糊-PI控制的无功补偿技术在矿井提升系统中的应用[J].江南大学学报:自然科学版,2013,12(5):582-590.
[5]TRINHQ-N,LEE H H.An advanced current control strategy for three-phase shunt active power filters[J].IEEE Transactions on Industrial Electronics,2013,60(12):5 400-5 410.
[6]SHANG L,SUN D,HU J.Sliding-mode-based direct power control of grid-connected voltage-sourced inverters under unbalanced network conditions[J].IET Power Electronics.,2011,4(5):570-579.
[7]HAO X,YANG X,LIU T,et al.A sliding-mode controller with multiresonant sliding surface for single-phase grid-connected vsi with an lcl filter[J].IEEE Transactions on Power Electronics,2013,28(5):2 259-2 268.
[8]Mohammadi Mohammod.Voltage stability analysis with static var compensator(svc)for various faults in power system with and without power system stabilizers(pss)[J].Research Journal of Applied Sciences,Engineering and Technology,2011,3(7):668-676.
[2]赵强松,崔丹丹,彭喜英,等.一种用于冲击性负荷的动态无功功率补偿方法[J].工矿自动化,2015,41(7):68-72.
[3]刘丽丽,蒋玉凤.煤矿10k V链式STATCOM关键技术的研究[J].煤炭技术,2015,34(4):285-287.
[4]刘辉,唐朝晖,杨赛强,等.基于模糊-PI控制的无功补偿技术在矿井提升系统中的应用[J].江南大学学报:自然科学版,2013,12(5):582-590.
[5]TRINHQ-N,LEE H H.An advanced current control strategy for three-phase shunt active power filters[J].IEEE Transactions on Industrial Electronics,2013,60(12):5 400-5 410.
[6]SHANG L,SUN D,HU J.Sliding-mode-based direct power control of grid-connected voltage-sourced inverters under unbalanced network conditions[J].IET Power Electronics.,2011,4(5):570-579.
[7]HAO X,YANG X,LIU T,et al.A sliding-mode controller with multiresonant sliding surface for single-phase grid-connected vsi with an lcl filter[J].IEEE Transactions on Power Electronics,2013,28(5):2 259-2 268.
[8]Mohammadi Mohammod.Voltage stability analysis with static var compensator(svc)for various faults in power system with and without power system stabilizers(pss)[J].Research Journal of Applied Sciences,Engineering and Technology,2011,3(7):668-676.