Abstract
A three-phase transformerless power electronic conversion system is used as an interface between a photovoltaic (PV) array and the utility line. A high efficiency is obtained because a conventional power transformer is not applied and because of a high array voltage. A maximum power point tracker (MPPT) is used for optimal utilization of the PV-array, which results in a high yield of the system. The power electronic converter is based on the topology of a Pulse Width Modulated Current Source Inverter (PWM-CSI). The inverter is operated at a high switching frequency (20 kHz), so that waveforms with a low distortion are generated, while the power factor is near unity. On the ac side as well as on the dc side the harmonics and the ripple components are considered. Performance measurements on a 1kVA-prototype system show that the efficiency of the system increases from 65% at 20% load to 85% at full load. From 20% to full load, the power factor exceeds 0.95. 11 figs., 4 refs.
Veltman, A T;
[1]
De Haan, S W.H.
[2]
- Netherlands Energy Research Foundation, Petten (Netherlands)
- Technische Univ. Eindhoven (Netherlands)
Citation Formats
Veltman, A T, and De Haan, S W.H.
Properties of a three phase pulse width modulated current source inverter for conversion of photovoltaic energy in grid connected operation.
Netherlands: N. p.,
1991.
Web.
Veltman, A T, & De Haan, S W.H.
Properties of a three phase pulse width modulated current source inverter for conversion of photovoltaic energy in grid connected operation.
Netherlands.
Veltman, A T, and De Haan, S W.H.
1991.
"Properties of a three phase pulse width modulated current source inverter for conversion of photovoltaic energy in grid connected operation."
Netherlands.
@misc{etde_10132572,
title = {Properties of a three phase pulse width modulated current source inverter for conversion of photovoltaic energy in grid connected operation}
author = {Veltman, A T, and De Haan, S W.H.}
abstractNote = {A three-phase transformerless power electronic conversion system is used as an interface between a photovoltaic (PV) array and the utility line. A high efficiency is obtained because a conventional power transformer is not applied and because of a high array voltage. A maximum power point tracker (MPPT) is used for optimal utilization of the PV-array, which results in a high yield of the system. The power electronic converter is based on the topology of a Pulse Width Modulated Current Source Inverter (PWM-CSI). The inverter is operated at a high switching frequency (20 kHz), so that waveforms with a low distortion are generated, while the power factor is near unity. On the ac side as well as on the dc side the harmonics and the ripple components are considered. Performance measurements on a 1kVA-prototype system show that the efficiency of the system increases from 65% at 20% load to 85% at full load. From 20% to full load, the power factor exceeds 0.95. 11 figs., 4 refs.}
place = {Netherlands}
year = {1991}
month = {Jun}
}
title = {Properties of a three phase pulse width modulated current source inverter for conversion of photovoltaic energy in grid connected operation}
author = {Veltman, A T, and De Haan, S W.H.}
abstractNote = {A three-phase transformerless power electronic conversion system is used as an interface between a photovoltaic (PV) array and the utility line. A high efficiency is obtained because a conventional power transformer is not applied and because of a high array voltage. A maximum power point tracker (MPPT) is used for optimal utilization of the PV-array, which results in a high yield of the system. The power electronic converter is based on the topology of a Pulse Width Modulated Current Source Inverter (PWM-CSI). The inverter is operated at a high switching frequency (20 kHz), so that waveforms with a low distortion are generated, while the power factor is near unity. On the ac side as well as on the dc side the harmonics and the ripple components are considered. Performance measurements on a 1kVA-prototype system show that the efficiency of the system increases from 65% at 20% load to 85% at full load. From 20% to full load, the power factor exceeds 0.95. 11 figs., 4 refs.}
place = {Netherlands}
year = {1991}
month = {Jun}
}