Single-phase active power filter for battery charger harmonic compensations
This paper presents the employment of a single-phase active power filter to compensate harmonics generated by battery charger. The presence of the harmonics leads to various problems and poor power quality. The objectives of this project are to control and regulate the DC bus voltage of the single-p...
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| Main Authors: | , |
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| Format: | Conference or Workshop Item |
| Published: |
2012
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/5862/ http://eprints.uthm.edu.my/5862/4/3_x.pdf |
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| Summary: | This paper presents the employment of a single-phase active power filter to
compensate harmonics generated by battery charger. The presence of the harmonics
leads to various problems and poor power quality. The objectives of this project
are to control and regulate the DC bus voltage of the single-phase active power
filter and to obtain the switching signal for active power filter to generate
appropriate current compensations. The operation of active power filter is verified
using thesimulations in MatlabISimulink. PI controller is used in order to regulate
the DC bus voltage and hysteresis current controller is employed to generate
signal for switching purpose. The process is based on sensing line currents, filter
currents and DC side capacitor voltage. The error signal caused by the filter has
been computed firstly. Then this error signal has been compensated using the PI
controller. The reference filter currents signal then obtained by subtracts the line
current with the compensated signal from the controller. This reference current
is feed to the hysteresis current controller and compare with the sensed filter
currents to obtain the switching signal for active power filter. Simulation results
are obtained with the active power filter and without the active power filter in
the system. The system line currents with active power filter has a total harmonic
distortion of 1.43% while the system line currents without active power filter
has a total harmonic distortion of 36.36%. Thus, based on the simulation results
this paper verified the ability of active power filter to compensate harmonics
generated by the battery charger. |
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