Z-source inverter based wind power generation system

Supatti, Uthane; Peng, Fang Zheng

doi:10.1109/icset.2008.4747084

Cited by 34 publications

(18 citation statements)

References 16 publications

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“…In addition, the average flux inside the transformers must be constant, which leads to (5 Figure 7). Assume that the inverter delivers the rated power, output voltage and current to the load.…”

Section: B Equivalent Circuit Model and Analysismentioning

confidence: 99%

High frequency transformer isolated Z-source inverters

Jiang

Cao

Peng

2011

2011 Twenty-Sixth Annual IEEE Applied Power Electronics Conference and Exposition (APEC)

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This paper presents a family of high frequency transformer isolated impedance-source (Z-source) inverters and corresponding control method for DC to AC power conversion applications. The original single-stage Z-source inverter incorporates a unique passive impedance network coupled between the inverter main circuit and power source, thus overcoming some conceptual limitations of conventional voltage-fed and current-fed inverters. The proposed isolated Zsource inverters carefully integrate the Z-source network concept into the two-stage DC-DC-AC topology, by employing high frequency transformers. While inheriting the great merits of original Z-source inverters, such as wide input range, buck and boost functions, and high reliability against EMI noises, the proposed topologies can achieve input-output isolation and higher voltage boost ratio with reduced device stresses, with transformer secondary to primary turns ratio over 1. This paper concentrates on one example of a voltage-fed isolated Zsource inverter to elaborate the detailed operating principle and control. Simulation and experimental results are presented to verify the analysis and demonstrate the new features.

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Section: B Equivalent Circuit Model and Analysismentioning

confidence: 99%

High frequency transformer isolated Z-source inverters

Jiang

Cao

Peng

2011

2011 Twenty-Sixth Annual IEEE Applied Power Electronics Conference and Exposition (APEC)

Self Cite

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“…The distributed power system proposed is shown in Fig.1 [2]. The system is a one stage converter which includes a variable speed wind turbine, diode rectifier with input capacitors (C a ,C b ,and C c ), Z-source network, and inverter system connected to the grid.…”

Section: A Main Circuitmentioning

confidence: 99%

Z-source inverter with grid connected for wind power system

Supatti

Peng

2009

2009 IEEE Energy Conversion Congress and Exposition

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This paper proposes the use of the Z-source inverter with grid connected wind turbine generation systems. The maximum boost control is used to boost up the output voltage with lower voltage stress across the IGBTs. The gridconnected control method is proposed for the system. The two independent control variables, the shoot-through duty ratio and the modulation index, are used to control the proposed system in order to provide the required voltage and power. The simulation and experimental results show that the system and control method effectively produce the desired voltage and precisely deliver the produced power to the utility grid, even though the input voltage can be lower or higher than the output voltage.

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“…In [24][25][26], a new variable-speed wind energy conversion system (WECS) with a permanent-magnet synchronous generator (PMSG) and Z-source inverter was proposed. Control methods were researched for grid-connection and maximum power point tracking (MPPT) in these references.…”

Section: Introductionmentioning

confidence: 99%

Stator Current Harmonic Reduction in a Novel Half Quasi-Z-Source Wind Power Generation System

Huang

Zhang

2016

Energies

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Abstract:The generator stator current gets distorted with unacceptable levels of total harmonic distortion (THD) because impedance-source wind power generation systems use three-phase diode rectifiers. The stator current harmonics will cause increasing losses and torque ripple, which reduce the efficiency and stability of the system. This paper proposes a novel half quasi-Z-source inverter (H-qZSI) for grid-connected wind power generation systems, which can reduce the generator stator current harmonics a great deal. When H-qZSI operates in the shoot-through zero state, the derivative of the generator stator current is only determined by the instantaneous value of the generator stator voltage, so the nonlinear relationship between generator stator current and stator voltage is improved compared with the traditional impedance-source inverter. Theoretically, it is indicated that the stator current harmonics can be reduced effectively by means of the proposed H-qZSI. Finally, simulation and experimental results are given to verify the theoretical analysis.

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Z-source inverter based wind power generation system

Cited by 34 publications

References 16 publications

High frequency transformer isolated Z-source inverters

High frequency transformer isolated Z-source inverters

Z-source inverter with grid connected for wind power system

Stator Current Harmonic Reduction in a Novel Half Quasi-Z-Source Wind Power Generation System

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