Inverter Dead-Time Compensation up to the Field Weakening Region with Respect to Low Sampling Rates

Paper #:
  • 2012-01-0500

Published:
  • 2012-04-16
DOI:
  • 10.4271/2012-01-0500
Citation:
Sworowski, E., Pötzl, T., and Reuss, H., "Inverter Dead-Time Compensation up to the Field Weakening Region with Respect to Low Sampling Rates," SAE Int. J. Alt. Power. 1(1):112-118, 2012, https://doi.org/10.4271/2012-01-0500.
Pages:
7
Abstract:
This report presents a new compensation method for distortions related to dead time, caused by B6-inverters with pulse-width-modulated output voltages. In spite of low sampling rates, the new method of compensation is effective at all ranges of rotation speed up to the field weakening region. No additional hardware is required for its implementation. The effectiveness of the new method has been shown experimentally. A description of the relevant distortions is given first to provide a basis for the development. This considers the field weakening region, and offers an illustrative method of quantifying the distortions. It is also shown that the use of compensation methods that do not take the sampling time into account leads to additional distortions. It is even possible that they exceed the distortions in an equivalent system without compensation.
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