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Design and Drive-Cycle Based Analysis of Direct-Driven Permanent Magnet Synchronous Machine for a Small Urban Use Electric Vehicle
A direct-driven permanent magnet synchronous machine for a small urban use electric vehicle is presented. The measured performance of the machine at the test bench as well as the performance over the modified New European ...
Squirrel Cage Rotor Design and Manufacturing for High-Speed Applications
A high-speed squirrel-cage induction machine requires totally different design compared to the traditional squirrel cage industrial motor because of mechanical limitations caused by the high speed. This results in a more ...
Influence of Travelling Current Linkage Harmonics on Inductance Variation, Torque Ripple and Sensorless Capability of Tooth-Coil Permanent-Magnet Synchronous Machines
(Institute of Electrical and Electronics Engineers (IEEE), 2014)
This paper introduces an important source of torque ripple in PMSMs with tooth-coil windings (TC-PMSMs). It is theoretically proven that saturation and cross-saturation phenomena caused by the non-synchronous harmonics of ...
Motion Synchronization of Biaxial Linear Tooth Belt Drive System
Many manufacturing processes depend on accurate multi-axis movements. Development of drive technology has replaced the need of mechanical couplings and cams in synchronized manufacturing operations. In this paper motion ...
Direct Liquid Cooling Method Verified With a Permanent-Magnet Traction Motor in a Bus
Direct liquid cooling (DLC) of electrical machine windings is a clearly effectual cooling method for high-torque and high-power-density applications needed, especially, in heavy vehicles. Usually, in electric vehicles, the ...
The Instrumentation Influence on the Motor Loss Determination Uncertainty
The input-output method is the most frequently used and, in practice, the only viable alternative to determine the losses of all electrical machines regardless of the supply type or motor technology. However, the losses ...
Advanced Uncertainty Calculation Method for Converter-Fed Motor Loss Determining
There is only a single practical method to determine the losses of converted-fed electrical machines. The method is based on mechanical output and electrical input power measurements. When this method is used, the loss ...
The high-speed induction motor: calculating the effects of solid-rotor material on machine characteristics
(the Finnish Academy of Technology, 1991)
A method for the analysis of high-speed solid-rotor induction motors in presented. The analysis is based on a new combination of the three dimensional linear method and the transfer matrix method. Both saturation and finite ...
Report of Lappeenranta city bus cycle: Lappeenranta Route 1
(Lappeenranta Univesity of Technology, 2013)
Comparison of the Performance of Different Asynchronous Solid-Rotor Constructions in a Megawatt-Range High-Speed Induction Motor
High-speed electrical machines have their advantages, such as higher power density than in traditional electrical machines, and disadvantages, such as very demanding and tailored design and manufacturing process. The ...