PID-based electronic load controller for three-phase synchronous generator

Abstract

This paper presents a project based on Proportional–Integral–Derivative (PID) for the implementation of load controller for three-phase synchronous generator. Electronic load controller is a device which is related to power electronics method of controlling, managing and monitoring frequency of a system. Mostly, in rural areas, we do not have access to grid for power. There pico- and micro-hydropower can be implemented to provide power. For persistent operation and control of a three-phase synchronous generator, an electronic load controller has been implemented rather than using speed controller governor which is much more expensive. With the help of the proposed device, load output can be controlled, and thus, frequency can be maintained constant which again reduces worst case of overloading on generator. Therefore, with the help of the proposed scheme, protection of both generator and user’s load can be maintained. The proposed system can play a vital role in run-off-river type hydropower station because there is no point of saving water. Thus, the proposed system can be used to minimize the overall cost of installation of the hydropower plant up to a large extent in rural areas where we do not have access to grid connection for electricity.