A Current Source Inverter Based Motor Drive for EV/HEV Applications

Paper #:
  • 2011-01-0346

Published:
  • 2011-04-12
Citation:
Su, G. and Tang, L., "A Current Source Inverter Based Motor Drive for EV/HEV Applications," SAE Technical Paper 2011-01-0346, 2011, https://doi.org/10.4271/2011-01-0346.
Pages:
10
Abstract:
The voltage source inverter (VSI) possesses several drawbacks that make it difficult to meet the requirements of automotive applications for inverter volume, lifetime, and cost. The VSI requires a very high performance dc bus capacitor that is costly and bulky. Other characteristics of the VSI not only negatively impact its own reliability but also that of the motor as well as motor efficiency. These problems could be eliminated or significantly mitigated by the use of the current source inverter (CSI). The CSI doesn't require any dc bus capacitors but uses three small ac filter capacitors and an inductor as the energy storage component, thus avoiding many of the drawbacks of the VSI. The CSI offers several inherent advantages that could translate into a substantial reduction in inverter cost and volume, increased reliability, a much higher constant-power speed range, and improved motor efficiency and lifetime. There are, however, a few barriers that have so far prevented the application of the CSI in hybrid electric vehicles. This paper discusses the barriers and proposed ways to overcome them.
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