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Index terms – three-phase PWM inverters, digital signal processor (DSP), robust servomechanism control, and sliding mode control. Techniques for producing low Total Harmonic Distortion in PWM inverters (single-phase or three-phase) have been known to exist in several prior works. In the early days, the carrier-modulated PWM techniques such as the triangular(More)
Field orientation techniques without flux measurements depend on the parameters of the motor, particularly on the rotor resistance or rotor time constant(for rotor field orientation). Since these parameters change continuously as a function of temperature it is important the value of rotor resistance be continuously estimated online. A fourth order sliding(More)
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  • Ali Keyhani, Mohammad N. Marwali, Lauis E. Higuera, Geeta Athalye
  • 2001
—This paper describes the basic concept of an integrated virtual learning system as an instructional tool for the development of digital signal processor (DSP)-based control schemes for motor drive applications. The system is comprised of a graphical user interface (GUI) front-end and a hardware-in-the-loop custom DSP for rapid prototyping and efficient(More)
In this paper, the problems of market monitoring and control of ancillary services of future energy systems are presented. We envision that future system operation of electric power systems will evolve into completely unbundled ancillary service markets that are governed by spot price signals. The grid operators need to acquire ancillary services through(More)
—A novel technique to estimate and model parameters of a 460-MVA large steam turbine generator from operating data is presented. First, data from small excitation disturbances are used to estimate linear model armature circuit and field winding parameters of the machine. Subsequently, for each set of steady state operating data, saturable inductances and(More)