Analysis and Design of Voltage and Frequency Controllers for Isolated Asynchronous Generators in Constant Power Applications

This paper deals with the analysis and design of voltage and frequency controllers for asynchronous generators to be used in isolated constant power applications such as pico and micro hydro sites. These controllers are basically load controllers which maintain the load power constant at generator terminals which in turns maintain the system frequency constant. A set of load controllers are designed, modeled and simulated in MATLAB using Simulink and PSB (Power System Block-set) toolboxes to demonstrate their performance.