DC-link Capacitor Reduction in Low Voltage and High Power Integrated Modular Motor Drives
- The development of 48V high power (>15 kW) automotive propulsion drives demands close integration of the power electronics and the electrical machine. Due to the large operating currents distributed multi-phase topologies are needed and physically separating the power converter from the e-machine would involve heavy cabling and costly connections. The volume and cost of the filter capacitor represents a major challenge in closely integrated high power integrated modular motor drives and techniques are needed to minimize this. The DC-link capacitor requires a large ripple current handling capability and cost, size and reliability limitations result in suitable candidate technologies being those with low volumetric energy densities. Use of interleaved multi three-phase machines are attractive due to the associated capacitor ripple current reduction. Discontinuous modulation schemes may also be employed as a technique for reducing the current ripple. In this paper techniques for capacitor ripple reduction are assessed through simulation and compared.
Author: | Andrew Hopkins, Bernhard Hopfensperger, Phil Mellor |
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DOI: | https://doi.org/10.1109/ECCE.2019.8913213 |
Parent Title (English): | 2019 IEEE Energy Conversion Congress and Exposition (ECCE), 29 Sept.-3 Oct. 2019, Baltimore, MD, USA |
Document Type: | conference proceeding (article) |
Language: | English |
Year of first Publication: | 2019 |
Release Date: | 2022/02/15 |
Tag: | Capacitors; DC-link capacitor; Interleaving; Inverters; Low voltage; Motor drives; Pulse width modulation; Windings; carrier phase shift; dual 3-phase inverter; integrated modular motor drive; ripple current reduction; winding displacement |
First Page: | 3208 |
Last Page: | 3214 |
Institutes: | Fakultät Elektro- und Informationstechnik |
Fakultät Elektro- und Informationstechnik / Labor Elektrische Maschinen und Antriebstechnik | |
Begutachtungsstatus: | peer-reviewed |
research focus: | Energie und Mobilität |
Licence (German): | Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG |