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This paper presents a design of a high efficiency, high power density motor drive system for air compressor applications in a hybrid electric vehicle. A permanent magnet synchronous motor (PMSM) is utilized. The system specifications require maximum system efficiency for wide speed range of 1,000 to 12,000 RPM at wide (180 to 400 VDC) variations of DC bus voltage. Moreover, compactness and high reliability constraints of the automotive drive applications make the design task nontrivial. Inherent characteristics of the PMSM further increase the complexity of the design. The authors implemented effective and innovative design techniques that led to a highly efficient, super compact PMSM drive. The motor drive's magnetic, mechanical and power electronics design, along with a top-level discussion of the controls strategy, are discussed. The theoretical analysis is presented along with the drive testing results for its steady-state operation.
Mekhiche et al. (Wed,) studied this question.
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