Harmonics study for induction motors
The presence of harmonics in the work of induction motors can be pretty bad. Why? They produce elastic deformation, that is, shaft deflection, parasitic torques, vibration noise, additional heating, and lower the efficiency of rotating machines.
The movement of the harmonics is with or against the direction of the fundamental. Criterion of forward or reverse rotation is established from h = 6m ± 1, where h is the order of harmonic and m is any integer.
If h = 6m ± 1, the rotation is in the forward direction, but at 1 ∕ h speed. Thus, 7th, 13th, 19th, … harmonics rotate in a direction same as the fundamental.
Premium Membership Required
This technical article/guide requires a Premium Membership. You can choose an annually based Plus, Pro, or Enterprise membership plan. Subscribe and enjoy studying specialized technical articles, online video courses, electrical engineering guides, and papers. With EEP’s premium membership, you get additional essence that enhances your knowledge and experience in low- medium- and high-voltage engineering fields.
Check out each plan’s benefits and choose the membership plan that works best for you or your organization.
50% Off! – Enterprise plan includes a 50% Off Code for unlimited apply on all courses.
Log In »Register »