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基于下垂特性的逆变电源并联控制 预览

Droop characteristic-based inverter power parallel control
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摘要 多模块冗余并联的逆变电源系统可提高供电的可靠性且可灵活地配置供电容量,由于诸如传统的主从式并联和分布式并联方式均存在互联信号线,而容易引入干扰且存在一旦公共电路或互联信号故障将可能导致整个并联电源系统故障的风险。针对上述问题,研究了一种基于有功调频,无功调幅的电压幅值和频率协调下垂的无互联线并联控制方案,分析了这种方案的原理,研究了根据电压幅值、频率及主电路参数确定电压幅值和频率下垂系数的方法,并给出一种数字化的有功功率和无功功率检测方法。经软件仿真和实验验证得出:所采用的基于电压幅值和频率协调下垂的无互联线并联控制方案和检测算法可以在并联模块间实现良好的功率和电流均分。 The reliability of electricity supply can be improved by multi-module redundancy parallel inverter power system and the power capacity can be configured flexibly. The disturbance is easily introduced as the interconnect signal cables are exist in the traditional master-slave parallel and distributed parallel control strategy. The whole parallel power system runs risks of breakdown once the interconnect signals fault happened. Aiming at the above issues, a wireless parallel control scheme non-interconnection strategy of voltage amplitude and frequency coordinate droop based on active frequency modulation and reactive amplitude modulation is studied, principle of this strategy is analyzed. A method to fix voltage amplitude and frequency droop coefficient according to voltage amplitude, frequency and main circuit parameters is investigated, and a digital method for detecting active power and reactive power is given. The software simulation and experimental verification show that power and current can be equally distributed in parallel modules by this wireless parallel control strategy based on voltage amplitude and frequency coordinate droop control.
作者 孟繁荣 吕世家 罗耀华 张玉佳 MENG Fan-rong, LU Shi-jia, LUO Yao-hua, ZHANG Yu-jia (1. College of Automation, Harbin Engineering University, Harbin 150001, China; 2. Beijing Electric Power Research Institute, Beijing 100075, China)
出处 《传感器与微系统》 CSCD 北大核心 2013年第7期35-38,共4页 Transducer and Microsystem Technology
基金 国家海洋局可再生能源专项(GHME2010GC02)
关键词 逆变器 无互联线 下垂控制法 PQ调节 inverter non-interconnection parallel droop control method PQ regulation
作者简介 盂繁荣(1972-),男,黑龙江哈尔滨人,副教授,从事电力电子技术与相关领域的研究工作。
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