This paper presents a linear current control scheme
for single-phase active power filters. The approach is based on an
outer voltage loop, an inner current loop, and a resonant selective
harmonic compensator. The design of the control parameters
is carried out using conventional linear techniques (analysis of
loop gain and other disturbance-rejection transfer functions).
The performance of the proposed controller is evaluated and
compared with two reference controllers: a basic control and an
advanced repetitive control. In comparison with these controllers,
the proposed control scheme provides additional attenuation to the
harmonics coming from the load current, the grid voltage, and the
reference signal, resulting in a grid current with lower harmonic
distortion. Experimental results are reported in order to validate
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CitationMiret, J. [et al.]. Selective harmonic-compensation control for single-phase active power filter with high harmonic rejection. "IEEE transactions on industrial electronics", 11 Agost 2009, vol. 56, núm. 8, p. 3117-3127.
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