Active Power Filter Based on a Dual Converter Topology
[ 1 ] Instytut Elektrotechniki i Elektroniki Przemysłowej, Wydział Elektryczny, Politechnika Poznańska | [ P ] employee
2017
chapter in monograph
english
- active power filter
- converter control
- converter topology
- PWM
EN This chapter presents a concept for a shunt active power filter (APF) that is able to more accurately map its input current in a reference signal, when compared to a typical filter solution. This can be achieved by interconnecting two separate converters, such that one of the converters corrects a total output current towards a reference signal. The output power of the auxiliary converter is much lower than power of the main converter, while its frequency response is extended. Thanks to the continuous manner of the operation of the auxiliary converter, among other items, pulse modulation components in the filter input current and the total harmonic distortion (THD) is minimized. These benefits are paid for by a relatively small increase in the system’s complexity and cost. This converter concept has been named “dual converter topology” (DCT). In this chapter, APF basics are presented, along with the results of simulation experiments and potential practical arrangements of the active filter.
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