Designing of electronic load controller for 3-ϕ SEIG used in constant power prime-mover driven Pico/Micro hydro power generation system

This paper presents the design procedure of electronic load controllers for three-phase self-excited induction generators used in pico and micro hydro power generation system feeding an isolated electrical load in remote mountainous region. For isolated type of load, induction generators are preferred as they possess many advantages over conventional synchronous generators. These advantages include better control, increased reliability and improved efficiency in renewable energy conversion systems using latest power electronics devices and advanced control techniques. Under varying load and input conditions, suitable control is necessary to maintain the required voltage and frequency of induction generator output. This paper presents design procedures of conventional & modern electronic load controllers used in micro and pico hydro power generation system involving three-phase self-excited induction generator feeding isolated load.