A Multicarrier PWM for Parallel Three-Phase Active Front-End Converters

Hou, Chung-Chuan

doi:10.1109/tpel.2012.2220860

Cited by 86 publications

(37 citation statements)

References 18 publications

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“…Typically, the motor side converter (MSC) works as a rectifier and controls the active and reactive power output of the PMSG. Meanwhile, the grid side converter (GSC) works as an inverter, maintains the DC-link voltage, and controls the reactive power exchange between the generator and the grid [12][13][14][15]. The DC chopper circuit, which consists of power electronic devices and unloading resistors connected in series, is used to maintain a stable DC-link voltage during grid faults.…”

Section: Configuration Of Vsc-hvdc-based Pmsg Wind Power Systemmentioning

confidence: 99%

Coordinated Control Strategies of VSC-HVDC-Based Wind Power Systems for Low Voltage Ride Through

Zhang

et al. 2015

Energies

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Abstract:The Voltage Source Converter-HVDC (VSC-HVDC) system applied to wind power generation can solve large scale wind farm grid-connection and long distance transmission problems. However, the low voltage ride through (LVRT) of the VSC-HVDC connected wind farm is a key technology issue that must be solved, and it is currently lacking an economic and effective solution. In this paper, a LVRT coordinated control strategy is proposed for the VSC-HVDC-based wind power system. In this strategy, the operation and control of VSC-HVDC and wind farm during the grid fault period is improved. The VSC-HVDC system not only provides reactive power support to the grid, but also effectively maintains the power balance and DC voltage stability by reducing wind-farm power output, without increasing the equipment investment. Correspondingly, to eliminate the influence on permanent magnet synchronous generator (PMSG)-based wind turbine (WT) systems, a hierarchical control strategy is designed. The speed and validity of the proposed LVRT coordinated control strategy and hierarchical control strategy were verified by MATLAB/Simulink simulations.

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Section: Configuration Of Vsc-hvdc-based Pmsg Wind Power Systemmentioning

confidence: 99%

Coordinated Control Strategies of VSC-HVDC-Based Wind Power Systems for Low Voltage Ride Through

Zhang

et al. 2015

Energies

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“…In this paper, for simplicity, parallel pulse width modulation with an AC-side isolation transformer [26,27], as shown in Figure 3, is used to eliminate the circulating current that would otherwise arise from the parallel operation of the main and auxiliary grid-side converters.…”

Section: Auxiliary Gsc Controlmentioning

confidence: 99%

Operation and Control of a Direct-Driven PMSG-Based Wind Turbine System with an Auxiliary Parallel Grid-Side Converter

Dou

Chu

et al. 2013

Energies

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Abstract:In this paper, based on the similarity, in structure and principle, between a grid-connected converter for a direct-driven permanent magnet synchronous generator (D-PMSG) and an active power filter (APF), a new D-PMSG-based wind turbine (WT) system configuration that includes not only an auxiliary converter in parallel with the grid-side converter, but also a coordinated control strategy, is proposed to enhance the low voltage ride through (LVRT) capability and improve power quality. During normal operation, the main grid-side converter maintains the DC-link voltage constant, whereas the auxiliary grid-side converter functions as an APF with harmonic suppression and reactive power compensation to improve the power quality. During grid faults, a hierarchical coordinated control scheme for the generator-side converter, main grid-side converter and auxiliary grid-side converter, depending on the grid voltage sags, is presented to enhance the LVRT capability of the direct-driven PMSG WT. The feasibility and the effectiveness of the proposed system's topology and hierarchical coordinated control strategy were verified using MATLAB/Simulink simulations.

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“…Traditionally, two-level rectifier was used as solution [1][2][3]. However, the two-level rectifier needs large filter for lower total harmonic distortion (THD).…”

Section: Introductionmentioning

confidence: 99%

Control the Three-level Rectifier Under Unbalanced Grid Conditions

Zhao¹

2018

dteees

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Abstract. This paper proposes a novel control method for Three-level rectifier under unbalanced grid conditions. An average model is established to analyze the influence of the unbalanced factor. It can be seen that the unbalanced factor will generate the negative-sequence current. The negative-sequence current can be suppressed by a proportional integral resonant (PIR) controller. Additionally, the unbalance of neutral-point (NP) voltage will generate in the three-level rectifier. Therefore, this paper proposes a space vector modulation for balancing the NP voltage. The simulation results confirm the performance and effectiveness.

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A Multicarrier PWM for Parallel Three-Phase Active Front-End Converters

Cited by 86 publications

References 18 publications

Coordinated Control Strategies of VSC-HVDC-Based Wind Power Systems for Low Voltage Ride Through

Coordinated Control Strategies of VSC-HVDC-Based Wind Power Systems for Low Voltage Ride Through

Operation and Control of a Direct-Driven PMSG-Based Wind Turbine System with an Auxiliary Parallel Grid-Side Converter

Control the Three-level Rectifier Under Unbalanced Grid Conditions

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