Development and testing of a micro-wind generating system

Lumbreras, Carlos; Guerrero, Juan Manuel; Garcı́a, Pablo; Briz, Fernando; Diaz, D.

doi:10.1109/smartmile.2013.6708183

Cited by 6 publications

(3 citation statements)

References 3 publications

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“…The most important part of a PES is the power semiconductor converter. Increasing the installed power of a PV power generation system (PVPGS) leads to increased power of the semiconductor converter, which is an integral part of the system [2][3][4][5][6][7][8][9][10]. For these reasons, multilevel semiconductor converters are typically used.…”

Section: Introductionmentioning

confidence: 99%

A Five-Level Converter in a Three-Level Mode for Common-Mode Leakage Current Suppression in PV-Generation Systems

et al. 2021

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Power generation systems (PGSs) based on renewable energy sources are finding ever-widening applications, and many researchers work on this problem. Many papers address the problem of transformerless PGSs, but few of them aimed at conducting research on structures with multilevel converter topologies as part of a PGS. In this paper a grid-tied transformerless PV-generation system based on a multilevel converter is discussed. There are common-mode leakage currents (CMLCs), which act as a parasitic factor. It is also known that common-mode voltage is the main cause of the common-mode leakage current in grid-tied PV-generation systems. This paper considers the space vector pulse-width modulation (PWM) technique, which is used to suppress or reduce common-mode leakage current. The proposed PWM technique with the reduction of common-mode leakage current for a generation system based on the multilevel converter controlled with a PWM technique was verified experimentally. The experimental results accurately confirmed the mathematical model and the compensation achieved without errors. In the experiment, there was an approximately six-fold decrease in the common-mode leakage current (10.3 mA in rejection mode and 61 mA in non-rejection current). This can lead to the elimination of CMLC in a multilevel semiconductor converter only by changing the modulation mode. This suggests the possibility of using these devices as part of transformerless generation systems. Suppression of CMLC can only be carried out by changing the PWM algorithm. Both considered topologies can implement this mode of operation. The proposed converter has a higher efficiency up to a frequency multiplicity of 2000.

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Section: Introductionmentioning

confidence: 99%

A Five-Level Converter in a Three-Level Mode for Common-Mode Leakage Current Suppression in PV-Generation Systems

et al. 2021

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“…The most important part of PES is a power semiconductor converter. Increasing the installed power of a PV power generation system (PVPGS) leads to increasing power of a semiconductor converter that is an integral part of the system [2][3][4][5][6][7][8][9][10]. For these reasons, multilevel semiconductor converters are typically used.…”

Section: Introductionmentioning

confidence: 99%

A Five-Level Converter in a Three-Level Mode for Common-Mode Leakage Current Suppression in PV-Generation Systems

Udovichenko¹,

Brovanov²,

Grishanov³

et al. 2021

Preprint

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Power generation systems based on renewable energy sources are finding ever-widening applications and many researchers work on this problem. Many papers address the problem of transformerless structures, but few of them are aimed at conducting research on structures with multilevel converter topologies. In this paper a grid-tied transformerless PV-generation system based on a multilevel converter is discussed. There are common-mode leakage currents which act as a parasitic factor. It is also known that common-mode voltage is the main cause of the common-mode leakage current in grid-tied PV-generation systems. This paper considers the space vector pulse-width modulation (PWM) technique which is used to suppress or reduce common-mode leakage current. The proposed engineering solutions for a generation system based on the multilevel converter controlled with a pulse-width modulation technique are verified by experiment.

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“…An active rectifier with only three active switches was proposed in [19]. To interface the generating system with the grid, either an Hbridge inverter [4]- [7] or three phase phase inverter [9]- [11] can be used. With the aim of reducing the number of power components in the passive rectifier plus boost converter plus H-bridge configuration, a special back-to-back inverter was proposed in [27].…”

Section: Introductionmentioning

confidence: 99%

Control of a small wind turbine in the high wind speed region

Lumbreras

Guerrero

Garcı́a

et al. 2014

2014 IEEE Energy Conversion Congress and Exposition (ECCE)

Self Cite

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Abstract-This paper proposes a new soft-stalling control strategy for grid-connected small wind turbines operating in the high and very high wind speed conditions. The proposed method is driven by the the rated current/torque limits of the electrical machine and/or the power converter, instead of the rated power of the connected load, which is the limiting factor in other methods. The developed strategy additionally deals with the problem of system startup preventing the generator from accelerating to an uncontrollable operating point under a high wind speed situation. This is accomplished using only voltage and current sensors, not being required direct measurements of the wind speed nor the generator speed. The proposed method is applied to a small wind turbine system consisting of a permanent magnet synchronous generator and a simple power converter topology. Simulation and experimental results are included to demonstrate the performance of the proposed method. The paper also shows the limitations of using the stator back-emf to estimate the rotor speed in permanent magnet synchronous generators connected to a rectifier, due to significant d-axis current at high load.

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Development and testing of a micro-wind generating system

Cited by 6 publications

References 3 publications

A Five-Level Converter in a Three-Level Mode for Common-Mode Leakage Current Suppression in PV-Generation Systems

A Five-Level Converter in a Three-Level Mode for Common-Mode Leakage Current Suppression in PV-Generation Systems

A Five-Level Converter in a Three-Level Mode for Common-Mode Leakage Current Suppression in PV-Generation Systems

Control of a small wind turbine in the high wind speed region

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