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Integrated Power Quality Compensator Based on Sliding Mode Controller
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| Author(s) |
B-R. Lin; S-C. Tsay; M-S. Liao |
| Abstract |
Recently active power filter is an important way to increase the power quality due to the widely use of
nonlinear loads and switching mode power converters. This paper presents a simple control strategy
which employed the switching mode rectifier to work simultaneously as a power factor corrector and
an active power filter to decrease current harmonics drawn from the nonlinear load. Since no
additional active power filter is needed, the cost of this configuration is lower than that of the
conventional active power filter configuration. The sliding mode controller is used in the current
control loop to achieve fast dynamics. Only the source currents are measured in the proposed control
scheme to reduce the elements of current sensors needed in the conventional control approach. A
simple proportional-integral controller is adopted in the voltage control loop to achieve slow dynamics.
The proposed scheme can achieve high power factor, current harmonic elimination and no dedicated
active power filter. A diode rectifier fed capacitive load as the nonlinear load is taken on AC mains to
demonstrate the effectiveness of the proposed active rectifier for reactive power and current harmonics
compensation. |
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| Filename: | EPE2001 - PP00103 - Lin.pdf |
| Filesize: | 158.4 KB |
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| Type |
Members Only |
| Date |
Last modified 2004-03-10 by System |
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