Design‐based computational procedure for performance prediction and analysis of single‐phase self‐excited induction generator

Abstract

The study presents a design-based computational procedure for determining the performance of a single-phase twowinding self-excited induction generator (SEIG) taking the machine design details as the input data. The magnetisation characteristic that forms the basis of analysis is obtained using the B-H curve of the core material and by employing an appropriate curve-fitting/regression technique that leads to obtain V g-I m variation from which V g-X m variation can be derived. The predicted parameters and performance characteristics of a single-phase SEIG are compared with the corresponding experimental results. This procedure can be a powerful tool for improved design of such machines. Effects of variation of typical design parameters on performance are presented to demonstrate its utility.

Improvement in dynamic stability of self-excited induction generator with short-shunt capacitors

“…The real part of the eigenvalue is written in the form of Re[λ]. Hence the real parts of the four eigenvalue pairs can be signified by Re[λ 1,2 ], Re[λ 3,4 ], Re[λ 5,6 ], Re[λ 7,8 ], respectively.…”

“…However, the SEIG has so poor loading capacity and voltage regulation that its application has been confined [2]. Short-shunt capacitor compensation is supposed as an effective way for appropriate voltage stability [3]. Dynamic stability analysis of the short-shunt SEIG with resistive load based on the transient model is carried out in this paper.…”

Comparative analysis of single-phase self-excited induction generators of various rotor cages

“…For production of low-power single-phase electrical energy, self-excited induction generators (SP-SEIGs) driven by a micro-hydro or micro-wind turbine may be applied. Usually, for single-phase power generation as an auxiliary energy source at household, single phase of two separate stator windings' induction machines of power up to 3 kW will be sufficient operating as an autonomous single-phase selfexcited induction generator [1][2][3][4][5][6]. When larger electrical power is needed, a three-phase stator winding self-excited induction generator with single-phase output should be employed for feeding single-phase loads [7][8][9].…”

“…Theoretically, any induction machine designed for motor operation may be directly utilized as induction generator, but its performance will be not satisfactory since, for example, problems with self-excitation of the generator may be occurred and terminal voltage regulation as well as the maximum output power at desired speed of rotation will be not sufficient. To obtain satisfactory performance of the induction generator, some reconstruction of stator windings [3,5], rotor cage and magnetic core are necessary to improve the performance characteristics of the generator. Multiple papers have been reported on the use of copper squirrel rotor cage in induction motors [10][11][12], but only a few dealt with induction machines operating as self-excited induction generators [13,14].…”

Field-circuit analysis and measurements of a single-phase self-excited induction generator

“…To investigate steady-state performance characteristics of the single-phase induction generators, circuit models based on field revolving theory are commonly used with taking saturation into account [1][2][3]. To study transients phenomena in the generators, two axis dq model with saturation included may be used [4].…”