Voltage-source active power filter based on multilevel converter and ultracapacitor DC link
- 3 April 2006
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Industrial Electronics
- Vol. 53 (2), 477-485
- https://doi.org/10.1109/tie.2006.870656
Abstract
A new topology for active power filters (APF) using an 81-level converter is analyzed. Each phase of the converter is composed of four three-state converters, all of them connected to the same capacitor dc link voltage and their output connected in series through output transformers. The main advantages of this kind of converter are the negligible harmonic distortion obtained and the very low switching frequency operation. The single-phase equivalent circuit is analyzed and their governing equations derived. The dc link voltage control, based on manipulating the converter's voltage phase, is analyzed together with the circuit's characteristics that determine the capability to draw or deliver active and reactive current. Simulation results for this application are compared with conventional pulsewidth-modulated (PWM) converters, showing that this filter can compensate load current harmonics, keeping better-quality sinusoidal currents from the source. The simulated configuration uses a 1-F ultracapacitor in the dc link, making it possible to store energy and deliver it during short voltage dips. This is achieved by applying a modulation control to maintain a stable ac voltage during dc voltage drops. A prototype of the filter was implemented and tested, and the obtained current waveforms showed to be as good as expected.Keywords
This publication has 10 references indexed in Scilit:
- Multilevel inverter, based on multi-stage connection of three-level converters scaled in power of threePublished by Institute of Electrical and Electronics Engineers (IEEE) ,2003
- Hybrid multilevel power conversion system: a competitive solution for high power applicationsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2003
- Multilevel converters for large electric drivesPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Multilevel inverters: a survey of topologies, controls, and applicationsIEEE Transactions on Industrial Electronics, 2002
- A generalized multilevel inverter topology with self voltage balancingIEEE Transactions on Industry Applications, 2001
- A three-phase multilevel converter for high-power induction motorsIEEE Transactions on Power Electronics, 1998
- Unified voltage modulation technique for real-time three-phase power conversionIEEE Transactions on Industry Applications, 1998
- The state-of-the-art of power electronics in JapanIEEE Transactions on Power Electronics, 1998
- Fast current trajectory tracking control based on synchronous optimal pulsewidth modulationIEEE Transactions on Industry Applications, 1995
- Power electronics and motion control-technology status and recent trendsIEEE Transactions on Industry Applications, 1993