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The purpose of this paper is to investigate high-speed machine design enabled through the use of silicon-carbide based power electronic inverters. Silicon carbide based switching devices have superior properties compared to silicon based devices, and they are able to change the paradigm for high-speed machine design. High-speed machines with a higher number of poles are shown to reduce the machine...
The transversalflux machine DYNAX is a high torque and power density machine. Unlike conventional rotary field machines the transversalflux machine consists of three single phase stators with coupling by a common rotor for constant torque generation. Therefore models of conventional machines cannot be used to describe the entire behavior of the DYNAX, even if the fundamental voltage and current waves...
The paper deals with methods and algorithms for the estimation of the induction motor equivalent circuit parameters starting from the geometrical and electrical data generally available after an electromagnetic design. The main aim of the paper is to help the readers to pass from the theoretical analysis to numerical code suitable to be included in own design software. For this reason, the step-by-step...
Axial-flux, Permanent-magnet machines are used in different applications where the power and torque density requirements are very high. These machines have simple structures, relatively high efficiencies and low cost. The parameters of these machines are very small compared with the parameters of conventional machines. Different measuring methods are normally used in order to obtain good estimates...
This paper discusses the three most common in-process electrical winding tests. These include the hipot, high voltage impulse and winding resistance tests. Then it discusses additional auxiliary tests which are commonly performed on windings such as inductance, rotation direction, magnet field mapping and partial discharge. Important parameters for properly conducting each of the tests in a production...
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