电压源逆变器在可再生能源并网、变频调速系统、不间断电源(uninterrupted power source,UPS)等领域得到了广泛的应用。文章针对以电压源逆变器并网的微源,研究其典型的控制方式,以电压源逆变器电路模型为出发点,基于Digsilent平台搭建...电压源逆变器在可再生能源并网、变频调速系统、不间断电源(uninterrupted power source,UPS)等领域得到了广泛的应用。文章针对以电压源逆变器并网的微源,研究其典型的控制方式,以电压源逆变器电路模型为出发点,基于Digsilent平台搭建电压源逆变器典型控制器模型。在风、光、储微电网模型上进行验证,并对典型控制器模型的控制过程进行仿真分析,仿真结果表明,控制器模型基本能够满足微电网存在的并网运行和离网运行两种工况的正常运行要求。展开更多
Electrifying the on-board subsystems of aircraft becomes an inevitable process as being faced with the environmental pollution,along with the proposed concept called more electric aircraft(MEA).With the increasing num...Electrifying the on-board subsystems of aircraft becomes an inevitable process as being faced with the environmental pollution,along with the proposed concept called more electric aircraft(MEA).With the increasing number of on-board power electronic based devices,the distribution system of the aircraft can be regarded as an onboard microgrid.As it is known that the load power electronic converters can exhibit constant power load(CPL)characteristics and reduce the system stability,it is necessary to accurately predict and enhance the system stability in designing process.This paper firstly analyzes the stability of an on-board DC microgrid with the presence of CPL.Then,discusses the reasons behind instability and proposes a control strategy to enhance system stability.Finally,the simulation results are worked out to validate the analysis and the effect of the proposed control strategy.展开更多
文摘电压源逆变器在可再生能源并网、变频调速系统、不间断电源(uninterrupted power source,UPS)等领域得到了广泛的应用。文章针对以电压源逆变器并网的微源,研究其典型的控制方式,以电压源逆变器电路模型为出发点,基于Digsilent平台搭建电压源逆变器典型控制器模型。在风、光、储微电网模型上进行验证,并对典型控制器模型的控制过程进行仿真分析,仿真结果表明,控制器模型基本能够满足微电网存在的并网运行和离网运行两种工况的正常运行要求。
基金supported by Ministry of Science&Technology under National Key R&D Program of China(No.2021YFE0108600)Ningbo Science and Technology Bureau under S&T Innovation 2025 Major Special Program(No.2019B10071)Key International Cooperation of National Natural Science Foundation of China(No.51920105011)。
文摘Electrifying the on-board subsystems of aircraft becomes an inevitable process as being faced with the environmental pollution,along with the proposed concept called more electric aircraft(MEA).With the increasing number of on-board power electronic based devices,the distribution system of the aircraft can be regarded as an onboard microgrid.As it is known that the load power electronic converters can exhibit constant power load(CPL)characteristics and reduce the system stability,it is necessary to accurately predict and enhance the system stability in designing process.This paper firstly analyzes the stability of an on-board DC microgrid with the presence of CPL.Then,discusses the reasons behind instability and proposes a control strategy to enhance system stability.Finally,the simulation results are worked out to validate the analysis and the effect of the proposed control strategy.
