Load current observer based feed-forward DC bus voltage control for active rectifiers

Zhou, Zhongfu; Wang, C.; Liu, Y.; Holland, Paul M.; Igić, Petar

doi:10.1016/j.epsr.2011.11.008

Cited by 10 publications

(3 citation statements)

References 14 publications

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“…Regarding the rectifier mode operation, the most common control architecture found in the literature consists of two control loops (voltage and current) using PI or nonlinear controllers applying abc-dq-abc transformations [13][14][15][16][17]. In contrast, there are other control techniques for three-phase useful in placing the BESS as needed in the grid, the latter refers to connecting parallel modules (in a container) to typically reach a rated power from 1 MW to 2 MW depending on the battery technology [1, 2,26].…”

Section: Introductionmentioning

confidence: 99%

Control for Three-Phase LCL-Filter PWM Rectifier with BESS-Oriented Application

et al. 2019

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This paper deals with a battery energy storage system (BESS) in only one of its multiple operating modes, that is when the BESS is charging the battery bank and with the focus on the control scheme design for the BESS input stage, which is a three-phase LCL-filter PWM rectifier. The rectifier's main requirements comprise output voltage regulation, power factor control, and low input current harmonic distortion, even in the presence of input voltage variations. Typically, these objectives are modeled by using a dq model with its corresponding two-loop controller architecture, including an outer voltage loop and a current internal loop. This paper outlines an alternative approach to tackle the problem by using not only an input–output map linearization controller, with the aim of a single-loop current control, but also by avoiding the dq modeling. In this case, the voltage is indirectly controlled by computing the current references based on the converter power balance. The mathematical model of the three-phase LCL-filter PWM rectifier is defined based on the delta connection of the filter, which accomplishes the requirements of a 100 kW BESS module. Extensive simulation results are included to confirm the performance of the proposed closed-loop control in practical applications.

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Section: Introductionmentioning

confidence: 99%

Control for Three-Phase LCL-Filter PWM Rectifier with BESS-Oriented Application

et al. 2019

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“…VSCs enable control of the amplitude and phase angle of the AC terminal voltages. Moreover, their bidirectional power flow capabilities allow VSCs to perform real and/or reactive power flow control in AC transmission lines [1].…”

Section: Introductionmentioning

confidence: 99%

Control of Three-Phase Voltage Source Converters with the Derivative-Free Nonlinear Kalman Filter

et al. 2016

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The paper is concerned with proving differential flatness of the three-phase voltage source converter (VSC) model and its resulting description in the Brunovsky (canonical) form. For the linearized canonical model of the converter a feedback controller is designed. At a second stage, a novel Kalman Filtering method (Derivative-free nonlinear Kalman Filtering) is introduced. The proposed Kalman Filter is redesigned as disturbance observer for estimating additive input disturbances to the VSC model. These estimated disturbance terms are finally used by a feedback controller that enables the DC output voltage track desirable setpoints. The efficiency of the proposed state estimation-based control scheme is tested through simulation experiments.

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“…So, there is a lot of technical background related to it and most documented papers use a two-loop control scheme to obtain an adequate system performance, where the first loop is meant to control current with fast dynamics and the second one is meant to control output voltage with slow dynamics [4][5][6][7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

A Single Nonlinear Current Control for PWM Rectifier Robust to Input Disturbances and Dynamic Loads

Visairo

Núñez-Gutiérrez

Alcázar³

et al. 2017

Mathematical Problems in Engineering

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The requirements of PWM rectifiers for delivering power to motor drives include power factor correction and output voltage regulation even when strong variations such as voltage sags and dynamic load transients occur simultaneously. To achieve these objectives, the classic approach is to use a two-loop controller with its -model. In this paper, the authors propose a simplified approach to address that problem by using a feedback linearization-based nonlinear controller using only a single-loop current control and avoiding -modeling to reduce processing stages. To demonstrate the feasibility of this approach, several simulations are presented considering a 1.5 kW PWM rectifier.

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Load current observer based feed-forward DC bus voltage control for active rectifiers

Cited by 10 publications

References 14 publications

Control for Three-Phase LCL-Filter PWM Rectifier with BESS-Oriented Application

Control for Three-Phase LCL-Filter PWM Rectifier with BESS-Oriented Application

Control of Three-Phase Voltage Source Converters with the Derivative-Free Nonlinear Kalman Filter

A Single Nonlinear Current Control for PWM Rectifier Robust to Input Disturbances and Dynamic Loads

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