Introduction - If you have any usage issues, please Google them yourself
This paper presents a fully-digital-controlled shunt
active filter for harmonic termination of a power distribution
system. The main purpose of the active filter based on voltage
detection is not to compensate for current harmonics but to damp
out harmonic propagation caused by line inductors and shunt
capacitors for power factor correction. However, time and phase
delays inherent in digital controllers might lead to unsatisfactory
harmonic-damping performance although digital controllers are
preferable to analog controllers. This paper deals with the design
and implementation of a digital controller for a shunt active filter
based on voltage detection. Experimental results obtained from a
laboratory system developed in this paper verify the viability and
effectiveness of the fully-digital-controlled active filter.