Development of electronic load controller for IAG based standalone hydro power generation

An electronic load controller (ELC) is developed for an isolated asynchronous generator (IAG) to feed 3-phase, 4-wire consumer loads in a small hydro power generation system. This ELC consists of ac capacitors, voltage source converter (VSC) with a dc capacitor, a chopper, an auxiliary load at its dc bus, a star/hexagon transformer, consumer loads and it is implemented using synchronous-reference-frame (SRF) theory. This ELC provides a viable and cost-effective solution to achieve voltage and frequency control, harmonic elimination and load balancing for linear and nonlinear loads. Test results are presented to demonstrate the effectiveness of ELC for the IAG system.

[1]  J. B. Ekanayake,et al.  Induction generators for small hydro schemes , 2002 .

[2]  J.M. Ramirez,et al.  An Electronic Load Controller for Self-Excited Induction Generators , 2007, 2007 IEEE Power Engineering Society General Meeting.

[3]  N. Malik,et al.  Capacitance Requirements for Isolated Self Excited Induction Generators , 1987, IEEE Transactions on Energy Conversion.

[4]  B. Singh,et al.  Decoupled Voltage and Frequency Controller for Isolated Asynchronous Generators Feeding Three-Phase Four-Wire Loads , 2008, IEEE Transactions on Power Delivery.

[5]  Subhashish Bhattacharya,et al.  Synchronous frame based controller implementation for a hybrid series active filter system , 1995, IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting.

[6]  Bhim Singh,et al.  Star/Hexagon Transformer Based Three-Phase Four-Wire DSTATCOM for Power Quality Improvement , 2008 .