Particle Swarm Optimization (PSO) has potential applications in electric drives. The excellent characteristics of PSO may be successfully used to optimize the performance of electric machines in many aspects. In this chapter, a field-oriented controller that is based on Particle Swarm Optimization is presented. In this system, the speed control of two asymmetrical windings induction motor is ac...

Hultman, E. 2018. Robotized Production Methods for Special Electric Machines. Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology 1608. 82 pp. Uppsala: Acta Universitatis Upsaliensis. ISBN 978-91-513-0177-8. A research project on renewable energy conversion from ocean waves to electricity was started at the Division of Electricity at Uppsala Unive...

Virtual services on computation resources like CPUs and storages are supported to applications by using virtual machines in server clusters. Virtual machines with application processes can migrate from host servers to guest servers. In this paper, we discuss a process migration approach to reducing total electric energy consumption of servers by taking advantage of virtual machines in a cluster...

Most textbooks on electric machines present a classical five-element constant impedance equivalent circuit for modeling polyphase induction machines operating under balanced polyphase sinusoidal steady-state conditions. Yet it is known for cage rotor machines that the rotor element impedances vary significantly with rotor j-equency. Research is in progress to determine a better ac equivalent ci...