ABSTRACT Due to the power-grid low-order harmonic voltage and the nonlinearity of power electronic devices, the grid-connected converter of wind power generation system produces grid-connected harmonic current. In order to improve the output power quality of full-power grid-connected converter of wind power generation system, based on the detailed analysis of the harmonic mathematical model of grid-side converter, a cross-coupling control strategy for suppressing the low-order harmonic current components is proposed in this paper. In this control strategy, the DC component of each grid-connected harmonic current is detected in the multi-synchronous rotating coordinate system, and the current cross-coupling control method is adopted to realize the accurate control of each harmonic current. The harmonic current cross-coupling controller is analyzed and designed in detail. The proposed control strategy takes into account the cross-coupling effect of each harmonic current, which can effectively reduce the interaction between each harmonic current and the fundamental current, and improve the stability of the system. Simulation and experimental test verify the correctness and feasibility of the proposed control strategy.
2021-08-25 17:05:36 2.4MB 永磁直驱风电
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行业资料-电子功用-具有三个全控型变流器的无刷双馈电机调速装置.pdf.zip
行业资料-电子功用-具有三个全控型变流器的无刷双馈电机调速装置及方法.pdf.zip
行业资料-交通装置-CRH3型动车组变流器冷却液加注装置.zip
2021-08-17 17:22:07 457KB 行业资料-交通装置-CRH3型动
行业资料-交通装置-一种列车风冷变流器噪声有源控制装置.exe
行业分类-互联网-交错连接软开关混合型多电平直流互联变流器.zip
GB-T 34120-2017 电化学储能系统储能变流器技术规范(1),2017年最新储能系统标准,对储能变流器的技术参数提出明确要求
2021-08-01 11:09:24 1.5MB 标准
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SiC的成本问题? 甚么是合适的应用? 如何驱动⻔极? 用体二极管 还是同步整流? 如何降低杂散电感带来的影响? 如何对短路、过电流和过电压作保护? 如何计算损耗和结温? 如何缓和高dV/dt(电压变化速率)带来的影响? ⻓期可靠性要注意什么? SiC MOSFET器件是否可以并联?
2021-07-12 22:39:09 18.81MB SiC 变流器 英飞凌
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为提高交直流混合微电网在发生功率波动、并离网切换、系统参数偏差等情况下的鲁棒稳定性,提出了一种基于扰动跟踪的互联变流器(ILC)自适应反推控制策略。分析了交直流混合微电网的基本拓扑结构,并考虑系统建模误差和外界扰动的影响,将ILC实际数学模型转化为带综合干扰项的理想表达式;利用实时扰动跟踪法对系统综合干扰项进行观测和补偿,基于此提出了一种ILC自适应反推控制策略,以保证ILC能实时跟踪系统的外界干扰和误差并进行抑制,增强了系统应对功率波动和参数不确定性的能力;通过小信号稳定性分析和多个算例测试验证了所提控制策略的有效性和优越性。
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列车辅助变流器Matlab_Simulink仿真技术研究及应用.pdf
2021-07-10 15:05:17 375KB MATLAB 数据分析 数据处理 论文期刊