Stability limits of a three-phase induction generator supplying single-phase loads

Ion, Catalin Petrea; Marinescu, C.

doi:10.1109/atee.2013.6563496

Cited by 1 publication

(1 citation statement)

References 24 publications

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“…Induction generators, due to many benefits obtained in terms of cost, simplicity, ruggedness, and ease of manufacture, have long been considered appropriate for micro-hydro power generation in remote areas with related hydropower potential. Many researches have been done on three-phase induction generators [5][6][7][8][9][10][11][12], but not so many dedicated to the singlephase ones. Besides, most of the researches on single-phase induction generators concerned the operating speeds which are not too different from those of their three-phase machine counterparts.…”

Section: Introductionmentioning

confidence: 99%

Capacitor Motor as Low-Power, Low-Speed Single-Phase Generator

Santoso

Hasanah

Mismail

et al. 2014

EECSI

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In this paper, some results of experiment on modification of induction motor into generator are described. Not as usually done on three-phase motor, the modification has been done on capacitor motors normally supplied with singlephase source. The resulted induction generator should be able to self-excite and has been intended for low-power, low-speed applications. These applications are prospective for example in rural renewable energy generations and as motors for some special electric vehicles. Machine modification instead of total design-production or new machine acquisition is considered more appropriate for remote rural electrification. Distance and transportation difficulties, unavailability of nearby machine industry, lack of human resources with 'high-tech savvy', besides the low purchasing power of population in remote rural areas are some reasons behind the consideration. Experiment results indicated that voltage generation up to nominal value is not always easy to attain in a capacitor motor, even when functioning beyond its synchronous speed. An additional pre-charged capacitor should be used to initiate voltage generation. During start-up, load and the pre-charged capacitor had to be removed from generator to avoid capacitor discharge. Load could then be added gradually once generator approached its nominal output value. It was also shown that in order to generate power the generator must be rotating over its synchronous speed. The resulted frequency values did not vary linearly to the rotation speed and the obtained efficiency was still low.

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