Philip Krein


Key words:

Power electronics,, Machines, Electrostatics, Automotive systems, Battery management.

Research description:

Nonlinear analysis and control methods for power electronic systems, including low-voltage (<5 V) and low-power (<10 W) conversion, geometric control, energy-based control, and correlation-based control. Electric and hybrid vehicle systems and automotive electronics, including electric traction, battery charging and equalization, and overall energy management. Methods for control of induction machines. Portable and remote power applications, such as solar energy processing and spacecraft power systems. Inventions include a simple, inexpensive approach to battery equalization, a general method to control a system for minimum power loss or maximum power delivery, and a technique for active filters.

Laboratory Facilities:

Hardware facilities for power electronics from less than 1 W to more than 1 kW, at dynamic rates from dc to more than 100 MHz. Motor dynamic testing to 1.5 kW. Complete hybrid electric vehicle systems are available for laboratory and road testing over a wide range of driving cycles and scenarios. Power semiconductor device testing up to 400 A and 3000 V. Harmonic measurements and spectral tests from dc to 500 MHz.

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