| 赵海伟,秦海鸿,马策宇,朱梓悦.基于MMC拓扑STATCOM综合控制策略研究[J].电气自动化,2016,(1):55~58, 61 |
| 基于MMC拓扑STATCOM综合控制策略研究 |
| A Study on the Integrated Control Scheme for the STATCOM Based on MMC Topology |
| 修订日期：2015-03-27 |
| DOI： |
| 中文关键词: MMC-STATCOM 最近电平逼近调制 载波移相SPWM 预充电 综合控制策略 |
| 英文关键词:MMC-STATCOM, NLM, CPS-SPWM, pre-charging, integrated control scheme |
| 基金项目:教育部博士点基金资助项目(20123218120017)、南京航空航天大学研究生创新基地(实验室)开放基金资助项目(kfjj201466)、南京航空航天大学青年科技创新基金(理工类)(NS2015039)、江苏高校优势学科建设工程资助项目 |
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| 中文摘要: |
| 针对基于模块化多电平变换器(Modular Multilever Converter, 简称MMC)的静止同步补偿器(Static Synchronous Compensator, 简称STATCOM)提出了一种综合控制策略。根据MMC-STATCOM在不同工作状态下的性能要求以及最近电平逼近调制(Nearest Level Modulation, 简称NLM)和载波移相SPWM(Carrier Phase Shifted SPWM, 简称CPS-SPWM)两种控制策略的不同特点,在不同工作阶段分别选择合适的控制策略。基于瞬时无功功率理论,通过在d轴和q轴上分别叠加有功分量和无功分量的方法,在恒频启动阶段采用最近电平逼近调制并在电压外环采用斜坡控制,实现子模块电容电压快速稳定上升,在稳态阶段采用载波移相SPWM的分级控制,实现稳态时系统具有较好的输出性能。最后,综合控制策略进行了实验验证。 |
| 英文摘要: |
| Perspective to the Static Synchronous Compensator (STATCOM) based on Modular Multilevel Converter (MMC), this paper presents an integrated control scheme. Based on performance requirements on MMC-STATCOM under different working conditions as well as different characteristics of two control strategies, namely the Nearest Level Modulation(NLM) and Carrier Phase Shifting SPWM(CPS-SPWM), this paper selects appropriate control strategies for different working stages respectively. Based on the theory of instantaneous reactive power, by superimposing active component and reactive component on the d-axis and q-axis respectively, we use NLM in the constant-frequency startup phase and slope control in the outer voltage loop to realize rapid and stable rise of capacitor voltage in the sub-module. Moreover, we adopt CPS SPWM hierarchical control in the steady-state phase to ensure good output performance of the system in the steady state. Finally, experimental verification is completed for the proposed integrated control scheme. |
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