April 1999
Industry At A Glance
99-04_what-lea_fig20.html (Apr-1999)
A monthly magazine offering industry news, statistics and technical editorial to the oil and gas drilling, exploration and production industry.
Fig. 20. Example of before and after carrier frequency harmonics. In top curve, harmonics are exciting a system resonance. After modeling with new software and adjusting the system, bottom, current peaking is greatly reduced for the same fundamental current. |
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