| Title |
Study on the Power Factor Compensation Technique of Induction Generator According to Output Change |
| DOI |
https://doi.org/10.5370/KIEE.2022.71.6.909 |
| Keywords |
Axis transformation; Induction Generator; Power factor; Reactive power; STATCOM(Static Synchronous Compensator) |
| Abstract |
Induction generator are widely used in small-scale or micro-scale plants. Induction generators are sometimes operated at rated output, but in most cases, they are operated lower than rated output. Induction generators have an inductive load and a power factor of about 0.8 during rated operation, but the power factor drops below this when operating below the rating. A capacitor is attached to the generator terminal to compensate for the low power factor, but the capacity of this capacitor is calculated under the conditions of rated operation of the induction generator and is not suitable for output change. When the output of the generator changes, the current flowing through the stator of induction generator changes, but the excitation current required for magnetization changes very little. When the reactive power required for magnetization of the induction generator is compensated for on behalf of the power source, the power factor can be operated close to 1 even when the torque of the generator changes. In this paper, a control algorithm that can keep the power factor constant even when the output of the generator changes by installing a STATCOM(Static Synchronous Compensator) between the power supply side and the generator side is presented, and the possibility is presented through analysis. |