Research of Power Compensator for Single-Phase Three-Wire Distribution System

单相三线配电系统功率补偿器的研究

• 批准号: 16560254
• 负责人: IIDA Shoji
• 金额: $ 1.22万
• 依托单位: Tokyo Denki University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2004
• 资助国家: 日本
• 起止时间: 2004 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-16560254/
• 关键词: single-phase three-wire distribution system; half bridge converter; Power Factor Correction converter; Current Balancer; Static Var Generator; harmonic current; Active Filter; multi-functional power compensator; 力率改善; SVG; 高調波低減; 過渡応答; 力率補償

We have first proposed an improved PFC, Power Factor Correction, converter in this research. It is composed of two half-bridge PFC structures in common with a neutral source line and two smoothing capacitors, and connected to the single-phase three-wire distribution system. It has been made clear that both capacitor voltages can be always in balance without extra control schemes, though the conventional half-bridge PFC converters tend to have the unbalanced ones.The above distribution system is employed extensively in Japan, USA and the other countries. It has two ac sources with the same voltage and in phase. Numerous ac loads may be connected to the distribution system. As a consumer makes use of these loads at random, two source currents tend to be unbalanced. If many working loads lean to a one-sided source, the power interruption may occur by the operation of circuit breakers. Therefore, even if the load currents are unbalanced, it is desired to equalize both source currents by in … More serting Current Balancer into the distribution system.The above-proposed PFC converter can operate not only as the ac-dc converter but also as the dc-ac inverter. Furthermore, two respective half-bridge structures, Converter 1 and Converter 2, can be individually controlled. For example, while Converter 1 operates as the ac-dc converter, another Converter 2 can make the dc-ac conversion as the inverter simultaneously. In this research, we have investigated a Current Balancer by applying the above property of the proposed converter.There may be several ac loads with poor power factor, such as induction motors, in the distribution system. The employment of Static Var Generator must be effective for compensating their reactive powers. Moreover, conventional diode rectifiers with large smoothing capacitors, made use of the popular dc sources in TVs, computers, and so on, flow out the harmonic currents into the ac source, unless the PFC converters. In order to prevent the troubles by harmonics, it is preferred to employ Active Filter into the distribution system. Therefore, we have improved the above Current Balancer to the novel ac-dc converter combined with several power compensator functions. It has been confirmed by the simulations and the experiments that itself can output the dc power to its load, and simultaneously it can perform as Current Balancer, Static Var Generator and Active Filter in order to compensate the power qualities of the single-phase three-wire distribution system, where various ac loads are connected besides the proposed converter. Less

在这项研究中，我们首先提出了改进的PFC，功率因数校正，转换器。它由两个半桥PFC结构与中性源线和两个平滑电容器组成，并连接到单相三线分布系统。已经明确表明，两个电容器电压始终在没有额外控制方案的情况下始终保持平衡，尽管传统的半桥PFC转换器往往具有不平衡的平衡。以上配电系统在日本，美国和其他国家 /地区广泛采用。它具有两个AC源，具有相同的电压和相位。许多交流负载可能连接到分配系统。由于消费者会随机使用这些负载，因此两种源电流往往是不平衡的。如果许多工作负载倾斜到单方面，则可以通过断路器的操作发生功率中断。因此，即使负载电流是不平衡的，也希望通过…更多的串行电流平衡器均衡到分布系统中。上述PFC转换器不仅可以作为AC-DC转换器，而且可以作为DC-AC逆变器作为AC-DC转换器。此外，可以单独控制两个相对的半桥结构，即转换器1和转换器2。例如，当转换器1作为AC-DC转换器运行时，另一个转换器2可以使DC-AC转换为逆变器。在这项研究中，我们通过应用所提出的转换器的上述属性来研究当前的平衡器。在分配系统中，可能有几个AC负载，例如感应电动机，例如感应电动机。静态VAR发生器的使用必须有效地补偿其反应能力。此外，除非PFC转换器，否则使用具有较大平滑电容器的常规二极管整流器，它使用电视，计算机等流行的DC源将谐波电流流入AC源。为了防止谐波发生的麻烦，优先于将其主动过滤器雇用到分配系统中。因此，我们将上述当前平衡器与新型的AC-DC转换器以及多个功率补偿器函数相结合。通过模拟和实验证实了它可以将直流功率输出到其负载下，并且可以作为当前平衡器，静态var Generator和Active滤波器执行，以补偿单相三线分配系统的功率质量，其中各种AC载荷还连接了所提出的转换器。较少的

项目成果

単相三線式配電系統用電流バランサにおける直流コンデンサ電圧の一制御方式

单相三线配电系统均流器直流电容电压控制方法

• 发表时间: 2004
• 期刊: 平成16年度電気学会産業応用部門大会論文集 1巻
• 作者: 藤田崇之;飯田祥二
• 通讯作者: 飯田祥二

A Method for Balancing Capacitor Voltages in Single-Phase Half-Bridge PFC Converter

一种平衡单相半桥PFC变换器电容器电压的方法

• 发表时间: 2004
• 期刊: Institution of Electrical Engineers of Japan, Transactions on Industry Applications Vol.124, No.9
• 作者: T.Fujita;S.Iida
• 通讯作者: S.Iida

A Current Balancer in Single-Phase Three-Wire Distribution System

单相三线配电系统中的电流平衡器

• 发表时间: 2005
• 期刊: Institution of Electrical Engineers of Japan, Transactions on Industry Applications Vol.125, No.12
• 作者: T.Fujita;S.Iida
• 通讯作者: S.Iida

単相三線式配電系統用電流バランサにおける多機能化の検討

单相三线配电系统电流平衡器多功能研究

• 发表时间: 2004
• 期刊: パワーエレクトロニクス学会創設記念大会講演予稿集 1巻
• 作者: 藤田崇之;飯田祥二
• 通讯作者: 飯田祥二

A Multi-Functional Power Compensator for Single-Phase Three-Wire Distribution System

单相三线配电系统多功能功率补偿器

• 发表时间: 2005
• 期刊: Proceedings of the fifth IASTED International Conference on Power and Energy Systems No.468-170(CD-ROM)
• 作者: T.Fujita;S.Iida
• 通讯作者: S.Iida