dq-序动态相量建模方法及其在电力电子设备建模中的应用  

dq-Sequence Dynamic Phasor Modeling Method and its Application inModeling of Power Electronic Equipment

作　　者：毛晓明[1] 罗洪博 钟文大 蔡润雅 MAO Xiaoming;LUO Hongbo;ZHONG Wenda;CAI Runya(School of Automation,Guangdong University of Technology,Guangzhou 510006,Guangdong Province,China)

机构地区：[1]广东工业大学自动化学院,广东省广州市510006

出　　处：《中国电机工程学报》2023年第24期9711-9720,共10页Proceedings of the CSEE

基　　金：广东省自然科学基金项目(2023A1515010716,2020B1515130001)。

摘　　要：不平衡工况下,现有的动态相量分析方法难以支撑在dq旋转坐标系下实施控制的一类电力电子设备的高效建模。针对上述不足,提出dq-序动态相量建模方法。首先,通过对三相时域信号进行瞬时对称分量分解并结合基于派克变换基准角的傅里叶分解,提出dq-序动态相量的定义。其次,推导dq-序动态相量的乘法特性。接着,给出dq-序动态相量状态方程的统一形式、推导步骤和快速形成方法。最后,对不平衡工况下单端电压源型换流器进行建模,验证dq-序动态相量建模方法的正确性和有效性。该文的工作完善了动态相量理论,为不平衡工况下一类电力电子设备的高效建模提供了新方法。Under unbalanced working conditions,existing dynamic phasor theories are difficult to support efficient modeling of the type of power electronic equipment controlled in the dq rotating coordinate system.To address the above problem,the dq-sequence dynamic phasor(dq-SDP)method is proposed in this paper.First,by performing the instantaneous symmetric component decomposition on a set of three-phase time-domain signals and introducing Fourier decomposition based on the reference angle of Park transform,the definition of the dq-SDP is given.Then,the multiplication characteristics of the dq-SDPs are derived.Also,the unified form,derivation steps,and fast formation method for the dq-SDP state equations are provided.Finally,the effectiveness of the dq-SDP modeling method is verified by modeling the one-terminal voltage source converter under unbalanced operating conditions.The work in this article supplements the existing dynamic phasor theory,providing a new method for efficient modeling of a class of power electronic devices under unbalanced operating conditions.

关 键 词：动态相量 dq-序动态相量 交流不平衡 建模 电力电子 

分 类 号：TM92[电气工程—电力电子与电力传动]