A novel method for improving overload capability of stand-alone power system based on a flywheel induction motor

作者：Cheng Miao Miao^*; Kato Shuhei; Sumitani Hideo; Shimada Ryuichi

来源：IEEJ Transactions on Industry Applications, 2009, 129(10): 957-963.

DOI：10.1541/ieejias.129.957

• Active power flow
• Frequency control
• Low costs
• Low-cost systems
• New energy technologies
• Novel methods
• Output frequency
• Overload capability
• Power capacity
• Power supply
• Rapid development
• Remote areas
• Squirrel cage induction motor
• Stand -alone
• Stand alone power systems
• Stand-alone power system

Stand-alone power systems are widely used in islands and remote areas. With the rapid advances in the new energy technology, stand-alone power systems have got a rapid development. However, their overload capability is very poor. In this paper, a novel method to improve the overload performance of the stand-alone power system is proposed by using a flywheel induction motor. The flywheel induction motor is composed of a flywheel disk connected to a squirrel cage induction motor. It is controlled to supply the overload power of the stand-alone power supply by charging and discharging. The proposed system is characterized by the following three points: 1) Simple configuration; The flywheel induction motor is directly connected to the inverter-controlled load without any converters. 2) Simple frequency control; The expected active power flow is realized by a small change of the stand-alone power side inverter's output frequency. 3) Low cost system; A decreased power capacity demand for the stand-alone power supply is realized by adding a low cost flywheel induction motor. Experimental results are provided to verify the proposed system.

• 出版日期2009