Simulation of power converter with repetitive control system for higher harmonics elimination
01 Oct 2016-pp 1-5
TL;DR: The improved control system structure and its implementation in MATLAB Simulink environment is described and the advantages of the repetitive algorithm facing Fourier transform harmonic compensation are shown.
Abstract: This article deals with the simulation of the power converter with voltage-source inverter and sine-filter. The repetitive control system was designed. The existing power converter has a control system which makes Fourier transform of the output voltage to inject these harmonics with opposite phase. The new proposed system based on repetitive controller which is much simpler and with smaller CPU load. The higher harmonics elimination works perfect and the power converter produces output voltage with less than 5% THD under linear or non-linear load. This paper describes the improved control system structure and its implementation in MATLAB Simulink environment. The advantages of the repetitive algorithm facing Fourier transform harmonic compensation are shown. The performance of the new control method is shown in simulation results. The algorithm is carried out in C language using MATLAB S-Function block so it is suitable for implementation in the real-time control systems.
Citations
More filters
01 Sep 2017
TL;DR: In this article, a digital comb filter application is proposed to provide multiple harmonics compensation and simple implementation for grid-connected power electronic converter by means of digital comb filters. But the proposed method is casual therefore its implementation on the digital microprocessors is greatly facilitated.
Abstract: This paper presents the method of current higher harmonics control for grid connected power electronic converter by means of a digital comb filter application. The proposed method provides multiple harmonics compensation and simple implementation. The Proportional-Resonant (PR) control was complemented with appropriately tuned comb filter which resulted in reduced mitigation of output current harmonics and reduced THD. Two types of comb filters have been verified as a harmonic compensator namely feedback and feedforward structures. The compensator based on the feedback comb filter included additional casual FIR low-pass filter for increased robustness. Proposed FIR filter is casual therefore its implementation on the digital microprocessors is greatly facilitated. The experimental results have demonstrated the effectiveness of proposed solution for grid connected converter operating in a network with distorted supply voltage.
3 citations
23 May 2023
23 May 2023
TL;DR: In this paper , the authors proposed an algorithmic way to reduce the harmonic composition of traction current, based on the repetitive control method, which was tested on the traction electric drive of a subway train and showed a 10-fold decrease in the harmonic amplitude of 300 Hz.
Abstract: Moscow Metro has signal systems that ensure the safety of train traffic, such as automatic speed control system and centralization and interlocking systems. The traction electric drive of a metro train should not interfere with the operation of rail devices during standstill or movement. The main harmonics of the traction current are harmonics multiple of 300 Hz, appearing during rectification of the alternating voltage, and harmonics multiple of 50 Hz, in case of partial faults in traction substation. To reduce the influence of the harmonic composition of the traction electric drive, the frequencies encoding the information signals are chosen in intermediate ranges. However, during the movement of the train, the frequency of the motor and, consequently, of the currents change. Being superimposed on the main harmonic of 300 Hz, the amplitude of these frequencies can be amplified and create interference in the signals of automatic speed control and collision prevention control systems. This paper proposes an algorithmic way to reduce the harmonic composition of traction current, based on the repetitive control method. The algorithm was tested on the traction electric drive of a subway train couch and showed a 10-fold decrease in the harmonic amplitude of 300 Hz.
References
More filters
TL;DR: Three control methods—iterative learning control, repetitive control (RC), and run-to-run control (R2R)—are studied and compared and some promising fields for learning-type control are revealed.
679 citations
"Simulation of power converter with ..." refers background in this paper
...An analysis of the papers in the field of repetitive control shown that it is possible implement a repetitive control system with much lower requirements for the computation power of the target microcontroller [3][6][7][8]....
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TL;DR: A robust repetitive controller structure is proposed that uses multiple memory-loops in a certain feedback configuration, such that small changes in period-time do not diminish the disturbance rejection properties.
313 citations
"Simulation of power converter with ..." refers background in this paper
...An analysis of the papers in the field of repetitive control shown that it is possible implement a repetitive control system with much lower requirements for the computation power of the target microcontroller [3][6][7][8]....
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01 Dec 2007
TL;DR: In this article, an analysis of the application and optimal design of the repetitive controller for eliminating harmonic distortion in pulse-width modulation voltage source inverter systems is presented, and a method of analyzing the repetitive control system from the frequency response viewpoint is introduced.
Abstract: This paper presents an analysis of the application and optimal design of the repetitive controller for eliminating harmonic distortion in pulse-width modulation voltage source inverter systems. A method of analyzing the repetitive control system from the frequency response viewpoint is introduced. Based on this method, a systematic way of optimizing the design of the system is proposed. Specifically, the closed-loop repetitive controller is modified by including a zero-magnitude-and-phase compensator and a lead-lag compensator to improve the stability and tracking accuracy of the inverter system. It is shown both analytically and by simulations that the harmonics in the inverter's output voltage can be effectively eliminated with the improved repetitive controller.
12 citations
"Simulation of power converter with ..." refers background in this paper
...An analysis of the papers in the field of repetitive control shown that it is possible implement a repetitive control system with much lower requirements for the computation power of the target microcontroller [3][6][7][8]....
[...]
21 May 2015
TL;DR: The structure of the control system and its implementation in Simulink environment of MATLAB is described and the advantages of the software harmonic compensation are shown.
Abstract: This article is devoted to the simulation of control system for power converter with voltage-source inverter and sine-filter. The control system is designed with active harmonics filtering and can produce output voltage with less than 5% THD under RL- or non-linear load. This paper describes the structure of the control system and its implementation in Simulink environment of MATLAB. The advantages of the software harmonic compensation are shown. The simulation results confirm the efficiency of control method. The working algorithm is suitable for software implementation in the real-time control system.
1 citations
"Simulation of power converter with ..." refers background or methods in this paper
...The earlier paper [2] is dedicated to the simulation of a special frequency converter for VSCF systems....
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...The idea of the repetitive control method is similar to the proposed previously [2]: reference voltage for the next cycle (k+1) is corrected by measurements in the previous cycle (k)....
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...Method, which is described in [2], gives a positive result, but requires quite high computing performance from the microcontroller....
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