Abstract
DSTATCOM(distribution static compensator) is one of the custom power devices, and protects a distribution line from unbalanced and harmonic current caused by non-linear and unbalanced loads. Researches about DSTATCOM are mainly divided two parts, one is the calculation of compensation current and the other part is the current control. Conventional researches use a LPF(low pass filter) to eliminate ripple component at the calculation of compensation current. But this method has a problem that LPF's characteristics restrict the compensation performance of instantaneous active and reactive power. This paper proposes a calculation of compensation current using state observer that can be a counterproposal of conventional methods using LPF. Improved performance of instantaneous active and reactive power compensation was shown by experiments.
| Original language | English |
|---|---|
| Pages (from-to) | 1377-1382 |
| Number of pages | 6 |
| Journal | Transactions of the Korean Institute of Electrical Engineers |
| Volume | 57 |
| Issue number | 8 |
| State | Published - Aug 2008 |
Keywords
- Custom power devices
- DSTATCOM
- State observer
- Unbalanced load