Paper Info
Title
Carrier-Based Pwm With Enhanced Dc-Link Exploitation For Five-Phase Machines With Circulating-Current Filters
Abstract
Multiphase machines are attracting significant attention due to their advantages over three-phase ones. When using pulsewidth modulation (PWM), a zero-sequence signal can be injected so that the dc-link utilization is improved. For instance, in five-phase machines, for a certain dc-link voltage the fundamental component is increased in this way in 5.1%. Instead of PWM, it is possible to apply a square voltage waveform, which permits even better dc-link exploitation (27.3% with respect to conventional without zero sequence). Given the substantial voltage distortion, filters with large impedance at the low-impedance no-torque subspaces were devised. In any case, some of the square-waveform harmonics are mapped into the torque-producing plane without being attenuated by the filters, thus generating torque ripple. This paper proposes a carrier-based PWM method for five-phase drives that include a filter for circulating currents. This PWM technique takes advantage of the no-torque-producing components, which see a high filter impedance, to exploit the dc link to a degree similar to square voltage waveforms (23.1% versus 27.3%), but without the extra torque ripple. Simulation results are provided.
Year
DOI
Venue
2018
10.1109/IECON.2018.8591052
IECON 2018 - 44TH ANNUAL CONFERENCE OF THE IEEE INDUSTRIAL ELECTRONICS SOCIETY
Keywords
Field
DocType
Carrier-based pulsewidth modulation (PWM), dc-bus utilization, multiphase ac drives, PWM converters, variable speed drives
Control theory,Voltage,Waveform,Pulse-width modulation,Electrical impedance,Modulation,Harmonic analysis,Harmonics,Engineering,Torque ripple
Conference
ISSN
Citations 
PageRank 
1553-572X
0
0.34
References 
Authors
0
3
Name
Order
Citations
PageRank
Alejandro G. Yepes1678.88
Jesus Doval-Gandoy212718.84
Hamid A. Toliyat312626.32