Plug-In Dual-Mode-Structure Repetitive Controller for CVCF PWM Inverters
Keliang Zhou
Danwei Wang
Bin Zhang
Yigang Wang
Sch. of Electr. Eng. & the Wind Generation Res. Center, Southeast Univ., Nanjing;
This paper appears in: Industrial Electronics, IEEE Transactions on
Publication Date: March 2009
Volume: 56,
Issue: 3
On page(s): 784-791
ISSN: 0278-0046
INSPEC Accession Number: 10500873
Digital Object Identifier: 10.1109/TIE.2008.2005149
First Published: 2008-09-26
Current Version Published: 2009-02-27
Abstract
Repetitive control (RC) is found to be a high-performance control scheme for constant-voltage constant-frequency (CVCF) pulsewidth-modulated (PWM) converters to eliminate output total harmonic distortion. In this paper, a dual-mode-structure RC (DMRC) is proposed to further improve the control performance of RC. The proposed DMRC controller comprises of two paralleled periodic signal generators: an odd-harmonic one and an even-harmonic one. Without additional complexity and loss of tracking accuracy, DMRC can achieve a faster error convergence rate than the conventional RC does. Moreover, the tracking accuracy of DMRC is higher than that of odd-harmonic RC. In the presence of nonlinear load disturbances and parameter uncertainties, an application example of a DMRC-controlled single-phase PWM inverter is provided to evaluate the proposed DMRC scheme. Systematical experimental results show the effectiveness and superior advantages of the DMRC approach.
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