TY - GEN
T1 - Waveform peak shaping by multi-frequency power transfer in internal, single-phase distribution systems
AU - Bruske, Sebastian
AU - Buticchi, Giampaolo
AU - Liserre, Marco
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2017/4/28
Y1 - 2017/4/28
N2 - Internal distribution systems such as photovoltaic parks allow to use DC or AC with a frequency different from 50Hz. In this paper is instead proposed to use more than one frequency at the same time. The grid voltage amplitude at the fundamental frequency can be increased while the voltage peak value is kept constant by adding odd harmonics to the voltage waveform. The currents are decreased for the same power level which leads to reduced power converter losses. A further current reduction is achieved if waveform peak shaping is applied to the current waveforms. This paper presents the impact of multi-frequency power transfer on single-phase converters, and verifies the results with analysis and simulations. The impact of harmonic frequencies on cable losses due to the skin effect is taken into consideration in the analysis and effects on protection are discussed.
AB - Internal distribution systems such as photovoltaic parks allow to use DC or AC with a frequency different from 50Hz. In this paper is instead proposed to use more than one frequency at the same time. The grid voltage amplitude at the fundamental frequency can be increased while the voltage peak value is kept constant by adding odd harmonics to the voltage waveform. The currents are decreased for the same power level which leads to reduced power converter losses. A further current reduction is achieved if waveform peak shaping is applied to the current waveforms. This paper presents the impact of multi-frequency power transfer on single-phase converters, and verifies the results with analysis and simulations. The impact of harmonic frequencies on cable losses due to the skin effect is taken into consideration in the analysis and effects on protection are discussed.
KW - Internal distribution
KW - Multi-frequency power transfer
KW - Pulse-width modulated power converters
UR - http://www.scopus.com/inward/record.url?scp=85019543104&partnerID=8YFLogxK
U2 - 10.1109/CPE.2017.7915153
DO - 10.1109/CPE.2017.7915153
M3 - Conference contribution
AN - SCOPUS:85019543104
T3 - 2017 11th IEEE International Conference on Compatibility, Power Electronics and Power Engineering, CPE-POWERENG 2017
SP - 106
EP - 111
BT - 2017 11th IEEE International Conference on Compatibility, Power Electronics and Power Engineering, CPE-POWERENG 2017
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 11th IEEE International Conference on Compatibility, Power Electronics and Power Engineering, CPE-POWERENG 2017
Y2 - 4 April 2017 through 6 April 2017
ER -
