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Cascaded Packed U-Cell STATCOM With Low Capacitance And Its Third Harmonic Control
- Source :
- 2020 IEEE Applied Power Electronics Conference and Exposition (APEC).
- Publication Year :
- 2020
- Publisher :
- IEEE, 2020.
-
Abstract
- This paper proposes a novel STATCOM by cascading packed U-cell (CPUC) and using low capacitance. Compared to cascaded H-bridge, the CPUC-STATCOM can largely reduce switch counts and their related gate driver circuits. Then, skillfully utilizing the principle that the second-order harmonic component of capacitor voltage is in phase with the absolute value of grid voltage in capacitive mode, low capacitance is used in CPUC-STATCOM. It can reduce cost, weight and volume of system compared to usually using large capacitance to limit voltage ripple within 10% of nominal capacitor voltage. However, it has limited compensation capability in inductive mode by using low capacitance. Aiming at overcome the aforementioned drawback, a flexible third harmonic control method is proposed, which can reduce capacitor peak voltage and averaged voltage. Finally, the simulation results verified the performance of the proposed topology and control method.1
Details
- Database :
- OpenAIRE
- Journal :
- 2020 IEEE Applied Power Electronics Conference and Exposition (APEC)
- Accession number :
- edsair.doi...........0a96cfb839bf63682f1249d15e2deedb