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Browsing Theses (Electrical Engineering and Computer Science) by Subject "Variable speed drives"

Now showing items 1-9 of 9

Analysis and design of the brushless doubly-fed machine

Rochelle, Patrick R. (1990-10-15)

Use of conventional induction machines (IM) in adjustable speed drives (ASD) has increased in recent years. Electronic power processing has facilitated this increased use. The IM is an inexpensive and robust machine, ...
Design procedure for brushless doubly-fed machine used as a limited speed-range pump drive

Alajmi, Abdulhadi M. (1993-10-29)

The continuing desire of industry to further improve process efficiency, through tighter control and energy conservation, has prompted users to pay closer attention to Adjustable Speed Drives (ASDs). The conventional A ...
Development of a variable-speed, doubly-fed wind power generation system

Brune, Christopher S. (1993-08-18)

Generation of electricity from the wind is becoming increasing popular as an environmentally responsible resource. Current methods for generating electricity from the wind involve the use of fixed-speed generators. How ...
A DSP controlled multi-level inverter providing DC-link voltage balancing, ride-through enhancement and common-mode voltage elimination

Dai, Shaoan (2003-10-02)

With the development of high performance power electronic and semiconductor technologies, Adjustable Speed Drive (ASD) systems are increasingly applied in residential, commercial and industrial applications. Due to the a ...
Investigation and mitigation of the adverse effects of PWM adjustable speed drives

Zhang, Haoran (1998-12-15)

With the introduction of high speed semiconductor power devices and the increased application of adjustable speed drives (ASDs) for efficient speed control of ac motors, there has been a growing number of costly motor- ...
A new and improved control of a power electronic converter for stabilizing a variable speed generation system using an embedded microcontroller

Venkatswamy, Suresh (1991-05-03)

A new and improved stabilizer was developed for the variable speed generation (VSG) system. The VSG system exhibits periodic oscillations which sometimes leads to a loss of synchronism. After careful study, a simple bu ...
Performance optimization for doubly-fed generation systems

Bhowmik, Shibashis (1997-08-26)
A remotely controlled power quality test platform for characterizing the ride-through capabilities of adjustable speed drives

Matheson, Evelyn (2001-06-08)

With the increased attention on high efficiency and controllability of industrial processes, as well as reduced weight, volume and cost of consumer products, the applications of nonlinear power electronic converters su ...
Voltage sag and momentary interruption ride-through for adjustable speed drives

van Zyl, Annabelle (1998-12-15)

The awareness of electric power quality has increased over the past decade as electronic equipment has become more susceptible to power disturbances. The most disruptive power disturbances are voltage sags and momentar ...