This paper deals with a comprehensive survey on the topic of AC/DC & DC/DC converters for DC Motor Drives. A substantial number of different AC/DC and DC/DC topologies appropriate for DC motor drives are presented. This critical literature review brings out merits, demerits, and limitations besides giving the basic operating principles of various topologies. Keywords—controlled-rectifiers, chop...

BACKGROUND We studied the spectrum of motor dysphagia in a northern Indian tertiary referral center. METHODS In this retrospective study, consecutive patients with motor dysphagia referred to the Gastrointestinal Pathophysiology and Motility Laboratory from 2002 to 2007 were evaluated clinically and with eight-channel water-perfusion manometry. Causes of dysphagia were diagnosed using standar...

16 Management Summary One of the driving forces behind the industrial revolution was the invention—more than a century ago—of the electric motor. Its widespread use for all kinds of mechanical motion has made life simpler and has ultimately aided the advancement of humankind. And the advent of the inverter that facilitated speed and torque control of AC motors has propelled the use of electric ...

The objective of this work is to design and implement a closed loop system for induction motor starting at rated current. Thyristorized AC voltage regulator is used as the starting equipment and motor current regulation is carried out using an optimally tuned Proportional-Integral (PI) controller. Since, AC voltage controller fed starting of induction motor is a non-linear process, identificati...