多相交流系统的Park变换  

Park Transformation of Multiphase AC Systems

作　　者：陈嫦娥[1] 毛承雄[1] 王丹[1] 陆继明[1] 

机构地区：[1]华中科技大学电力安全与高效湖北省重点实验室,武汉430074

出　　处：《高电压技术》2008年第11期2475-2482,共8页High Voltage Engineering

基　　金：教育部新世纪优秀人才支持计划(NCET-04-0710)~~

摘　　要：在特种电子电力变压器的研究中,为了达到良好的控制效果,采用Park变换来实现三相变换到四相电子电力变压器高压侧的双闭环解耦控制。然而,在对其进行逆变换时,必须将Park变换拓展到多相交流系统,为此,在电机学理论的基础上,结合物理和数学两个学科,完成了Park变换从三相到多相的拓展,给出了四相及六相交流系统中Park变换的变换矩阵及其逆矩阵以及存在Park变换的任意相交流系统的Park变换之变换矩阵的通用推导公式以及推导方法,并且给出了多相交流系统Park变换后各变量的物理解释。针对多相交流输电中的研究热点四相交流输电,利用Park变换实现的高压侧控制4/3相电子电力变压器的仿真分析结果表明,利用四相交流系统Park变换实现的高压侧双闭环解藕控制能够达到预期的效果。In order to achieve good control effect in the research of special electronic power transformer（ EPT）, we employed Park transformation to implement the transfer from the double closed-loop decoupled control of threephase to four-phase EPT＇s primary side. However, when we try to transform four-phase source to three-phase, we must have the Park transformation in four-phase AC system which actually does not exist previously. This paper implements the expansion of Park transformation from three-phase to multi-phase on the basis of electromechanice with combining the fundamentals of physics and mathematics. The transformation matrix and inverse matrix of fourphase and six-phase as well as a general formula are presented to deduce the transformation matrix and its inverse matrix for any phase that has a Park transformation. The physical explanation of each variable in the new coordinate is discussed. Moreover, the application of Park transformation for multiphase AC systems in control systems of electronic power transformer is presented. The four-phase to three-phase EPT is employed to simulate the Park transformation for four-phase AC system in the control loop of its primary side. The results show that the double closed-loop decoupled control of EPT＇s primary side adopting four-phase AC system Park transformation works well.

关 键 词：PARK变换 电子电力变压器 多相交流输电 特种变压器 四相 电能质量 

分 类 号：TM41[电气工程—电器] TM461