The cascade induction machine: a reliable and controllable motor or generator |
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| Affiliation: | 1. School of Electrical Engineering and Automation, Tianjin University, Tianjin 300072, China;2. Tianjin Engineering Center of Electric Machine System Design and Control, Tianjin 300387, China;1. Department of Electrical Engineering, Shahid Rajaee Teacher Training University, Tehran, Iran;2. Department of Electrical Engineering, Karaj Branch, Islamic Azad University, Karaj, Iran |
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| Abstract: | This paper discusses and analyses a set of two induction machines, with 2p and 2q pole-pairs, respectively, connected in cascade. It highlights the design and development principles of a single unit version of a system consisting of two wire-wound rotor induction machines with their rotors connected in cascade. Presented performance analysis shows the described cascade machine, which is brushless and with no slip rings or commutators, as a reliable, efficient and practical machine that could replace the induction machine, which has a wire-wound rotor. An example of the conversion of a standard squirrel cage six pole induction machine into a (6+2) pole induction machine, without rewinding the stator, is also presented together with simulation and measurements for asynchronous and synchronous modes of operation. |
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