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Proceedings ArticleDOI: 10.1109/NATSYS.2015.7489123

Application of repetitive control for removal of harmonic distortions from inverter output

01 Dec 2015-pp 1-6
Abstract: It is mandatory to keep total harmonic distortion in output of most inverters below a prescribed limit. The harmonic distortions caused due to non-linear loads may not get corrected by simple PID controllers. Repetitive controllers are more effective in such situations. Often repetitive controllers are used as add-on block to the conventional PID controller. Design of repetitive controller can be easily implemented on digital platform. Some controller parameters may have to be decided on trial and error basis. more

Topics: Repetitive control (62%), PID controller (57%), Control theory (57%) more

Open accessBook
26 Jul 1989-
Abstract: Partial table of contents: Overview of Power Semiconductor Switches Computer Simulation of Power Electronic Converters and Systems GENERIC POWER ELECTRONIC CIRCUITS dc--dc Switch-Mode Converters Resonant Converters: Zero-Voltage and/or Zero-Current Switchings POWER SUPPLY APPLICATIONS Power Conditioners and Uninterruptible Power Supplies MOTOR DRIVE APPLICATIONS dc Motor Drives Induction Motor Drives Synchronous Motor Drives OTHER APPLICATIONS Residential and Industrial Applications Optimizing the Utility Interface with Power Electronic Systems SEMICONDUCTOR DEVICES Basic Semiconductor Physics Power Diodes Power MOSFETs Thyristors Emerging Devices and Circuits PRACTICAL CONVERTER DESIGN CONSIDERATIONS Snubber Circuits Gate and Base Drive Circuits Design of Magnetic Components Index more

Topics: Power module (67%), Switched-mode power supply (65%), Power electronics (64%) more

5,802 Citations

Open accessBook
11 Oct 2007-

708 Citations

Journal ArticleDOI: 10.1109/TPEL.2003.810846
Kai Zhang1, Yong Kang1, Jian Xiong1, Jian Chen1Institutions (1)
Abstract: A novel repetitive controller directly combined with an open loop SPWM inverter is presented in this paper. To cope with the high-resonant peak of the open loop inverter that may cause instability, a zero-phase-shift notch filter other than the inverse transfer function of the inverter or a conventional second-order filter is incorporated in the controller. The proposed method has good harmonic rejection and large tolerance to parameter variations. To further reduce the steady-state error, a low-pass-filter Q(z) algorithm is applied. The DC bias problem is also taken into consideration and solved with the repetitive controller itself. The method is implemented with a digital signal processor and achieves low THD% (1.4%-1.7%) with nonlinear loads and fast error convergence (3-5 fundamental periods). It proves to be a cost-effective solution for common UPS products where high-quality output voltage is more stressed than fast dynamic response. more

Topics: Repetitive control (58%), Inverter (56%), Total harmonic distortion (56%) more

362 Citations

Open accessJournal ArticleDOI: 10.6113/JPE.2013.13.3.409
Abstract: This paper presents an enhanced control strategy which consists of a proportional-integral controller and a repetitive controller (RC) for improving the voltage performance of distributed generation (DG) under nonlinear load conditions. The proposed voltage controller is able to maintain a sinusoidal voltage at the point of common coupling (PCC) of the DG regardless of the harmonic voltage drop in the system impedance due to nonlinear load currents. In addition, by employing the delay time of the RC at one-sixth of the fundamental period, the proposed RC can overcome the slow response drawback of the traditional PI-RC. The proposed control strategy is analyzed and the design of the RC is presented in detail. The feasibility of the proposed control strategy is verified through simulation and experimental results. more

Topics: Voltage controller (63%), Control theory (60%), Voltage (50%)

26 Citations