Performance Testing of Power Electronic and Permanent-Magnet Adjustable-Speed Drives
| Autor: | Evelyn Matheson, Annette von Jouanne, Alan K. Wallace, Richard Jeffryes, Xiaozhou Zhou |
|---|---|
| Rok vydání: | 2001 |
| Předmět: |
Engineering
Electronic speed control business.industry Mechanical Engineering Electrical engineering Energy Engineering and Power Technology Automotive engineering Power (physics) Electric power system Magnet Torque Electrical and Electronic Engineering business Energy (signal processing) Induction motor Slip (vehicle dynamics) |
| Zdroj: | Electric Power Components and Systems. 29:1123-1132 |
| ISSN: | 1532-5016 1532-5008 |
| Popis: | This paper describes the physical construction, basic principles of operation, a series of comparison tests conducted on an adjustable speed coupling system (ASCS), and a low-voltage variable-frequency drive (VFD). These systems have been tested at three different ratings' (50 hp, 100 hp, 200 hp) driving load profiles representing both fans and pumps. The ASCS employs high energy-product neodymium/iron/boron (NeFeB) permanent magnets, which act on steel-backed copper discs to provide torque transfer from motor to load without mechanical contact. The slip that occurs between the motor and load shafts can be changed by adjustment of the mechanical clearance of the magnets and the copper discs. Thus, a form of speed control for the load is affected for a system driven by a constant frequency induction motor. The test results compare the energy savings potentials of the VFD and the ASCS and the merits and disadvantages of the two systems related to motor operation and power system connection issues. |
| Databáze: | OpenAIRE |
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