A novel large-capacity controllable reactor based on a transformer with voltage source inverter load

作者：Cheng Lu^*; Chen Qiaofu; Zhang Yu; Xiong Yali

来源：International Journal of Electronics, 2011, 98(1): 25-40.

DOI：10.1080/00207217.2010.497649

• controllable reactor
• transformer
• PWM inverter
• multiple secondary windings
• current tracing control
• large capacity

In this article a novel controllable reactor based on regulating the transformer's primary equivalent impedance by controlling its secondary voltage source inverter load is proposed. When the secondary current of a transformer is forced to be proportional to and in inverse phase with its primary current, the primary side of the transformer exhibits a linear adjustable reactance with respect to the proportion coefficient. The voltage source pulse width modulation (PWM) inverter connected to the secondary side of the transformer provides the required secondary current. In order to realise a large-capacity reactor, a transformer with multiple secondary windings is used to reduce the capacity requirement of each PWM inverter. A large-capacity (800 kVA) prototype is fabricated. The experimental results verify the characteristics of the novel controllable reactor - linear reactance tuning, few harmonics and fast response.

• 出版日期2011
• 单位国网能源研究院