Information is provided on some of the latest harmonic mitigation techniques for the improvement of the power quality of adjustable speed drives (ASD). Background information about motor drives such as the most common drive methods and about motor drive loads is given. An electronic motor drive classification based on the motor type is provided. Included are circuit configurations, a table of features of the main ASD, and a list of benefits of ASD. A brief review of some of the harmonic effects and an overview of some harmonic mitigation techniques are given.
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