April 2011
Intermediate to advanced
1128 pages
25h 6m
English
book
Electrical Engineering: Know It All
by Clive Maxfield, John Bird, Tim Williams, Walt Kester, Dan Bensky
Content preview from Electrical Engineering: Know It All
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Chapter 23
Traveling Wave Effects
Keith H. Sueker
Traveling wave effects were once the nearly exclusive domain of communications engineers and electric utility transmission line engineers. However, as variable frequency, pulse width modulated (PWM) motor drives have gone to higher and higher PWM frequencies, standing-wave phenomena have appeared in motor circuits. Traveling waves are now of concern to many power electronics engineers, and an understanding of their effects is necessary for motor protection in installations with long cables or high PWM frequencies. In modern terms, a transmission line is any set of parallel or coaxial conductors of finite length, and they may be printed circuit conductors or miles of overhead wires.
23.1 Basics ...
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