An integrated 42-V drive design for automobile loads with a low-distortion overmodulation strategy

This paper (also presented at [27]) presents an integrated design approach to small drives for emerging 42-V automotive systems. The emphasis is on motors for ancillary loads. The final result offers a simple and low cost solution with high efficiency and high power density. Motor and inverter desig...

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Bibliographic Details
Published in:IEEE transactions on power electronics 2006-05, Vol.21 (3), p.648-658
Main Authors: Kwasinski, A., Krein, P.T.
Format: Article
Language:English
Subjects:
42-V automotive power
Automobile auxiliary loads
Automobile engines
Automobiles
Automotive components
Automotive engineering
Costs
dc bus utilization
Design engineering
Distortion
Electric potential
Electric power
induction motor
Induction motors
Inverters
Low voltage
Modulation
Motors
overmodulation
Power factor
Power system harmonics
pulse-width modulation (PWM)
Reactive power
three-phase inverter
Voltage
Wounds
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Summary:This paper (also presented at [27]) presents an integrated design approach to small drives for emerging 42-V automotive systems. The emphasis is on motors for ancillary loads. The final result offers a simple and low cost solution with high efficiency and high power density. Motor and inverter designs are combined to gain advantages in power factor and operating range. A near-minimum-distortion method is introduced for the overmodulation regime to improve power factor without sacrificing harmonic performance. The design is addressed in several steps: integration of the induction motor into a 42-V environment, selection of the inverter modulation scheme, and final system integration. The proposed system consists of an induction motor wound for the proper voltage range and driven by an inverter. The inverter is used partly in the overmodulation regime when bus voltage is low. A signal is formed based on triangle injection to minimize distortion. Some alternative modulation approaches are also analyzed and compared with the proposed solution. Experimental results confirm that a low-distortion overmodulation approach can be implemented successfully
ISSN:0885-8993
1941-0107
DOI:10.1109/TPEL.2006.872387