Abstract
Bulk of the load in oil drilling rigs consists of nonlinear loads. This results in power quality problems like harmonic distortion and low power factor. The onshore oil drilling rigs operate in remote fields. This paper addresses the harmonic problems in onshore rigs that are commissioned in early period of semiconductor technology and use dc drives. Different power filtering solutions are considered. These are compared with the practical constraints such as space limitations, reliability, cost, ease of maintenance and THD. The comparative results are presented.
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