James Michael Nowak | Researchain

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ieee industry applications society annual meeting | 1988

Symmetrical GTO current source inverter for wide speed range control of 2300 to 4160 volt, 350 to 7000 hp, induction motors

Paul M. Espelage; James Michael Nowak; Loren H. Walker

A line of variable-speed 2300-4160 V, 350-7000 hp induction-motor drives for either fan or constant torque load applications is described. The drives are current-sourced, consisting of one or two six-pulse thyristor phase-controlled source converters in series, a DC link reactor, a six-pulse, symmetric-GTO (gate-turn-off), load inverter, a three-phase load capacitor in parallel with the induction motor. The drive features a wide speed range of operation, high inverter efficiency, and good motor current and voltage waveshape over the speed range.<<ETX>>

Archive | 2000

Multilevel PWM voltage source inverter control at low output frequencies

Eugene Filmore Kea; Fei (Fred) Wang; James Michael Nowak; David Smith

Archive | 1984

Control for bumpless transfer of an AC motor between a solid-state inverter and a supply mains

Paul M. Espelage; David L. Lippitt; James Michael Nowak

Archive | 1988

Method and apparatus for induction motor drive

Paul M. Espelage; James Michael Nowak

Archive | 1984

Twelve pulse AC motor drive

Paul M. Espelage; James Michael Nowak

Archive | 2008

Systems and Methods for Simulating Plant Operations

Chunchun Xu; Allen Michael Ritter; David Smith; Luis Jose Garces; Robert Allen Seymour; Mark Eugene Shepard; James Michael Nowak; Bruce Allen Gerritsen; Paul Michael Szczesny

Archive | 1984