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In recent years, substantial research efforts have been invested by industry and academia into the development of narrow tilting three wheeled vehicle technology as a viable alternative to four and two wheel vehicles for personal mobility. But there are challenges in order to make such vehicles safe, comfortable and acceptable to consumers. In this paper, a mathematical model of an electric narrow...
The paper presents the analytical analysis of a new type of linear tubular permanent magnet machine which uses radially magnetized magnets. These magnets have been magnetized in stepped manner instead of uniform magnetization over the complete length. The stepped magnetized magnets improve the sinusoidal nature of the waveforms of radial flux density and induced emf by reducing their harmonics contents...
The growing demand for electricity in developing countries calls for a continuous increase in the installed capacity. However, with installed capacity unable to meet the pace of increase in demand, increase in efficiency of energy conversion devices is a vital requirement. The present paper considers one such energy improvement method in the form of a line start permanent magnet synchronous motor...
Line Start Permanent Magnet Synchronous Motor (LSPMSM) has been proved as an economically feasible, high efficiency alternative to an induction motor where constant speed is desirable. These motors are having the properties of an induction motor during starting and synchronous motor during steady state period. The need of line starting, calls for a cage winding in addition to permanent magnets in...
Direct torque and flux control of ac machines is well established technique getting increasingly adapted in industry. This technique like other high performance control methods such as vector control is rarely applied to single phase machines. However, development of high performance low power drives is receiving some attention. This paper investigates the performance of single phase direct torque...
Line start permanent magnet synchronous motors are attracting growing attention for high duty factor industrial applications. Power quality has become a major concern in today's electric utility industry. More than 80 % power quality related problems are concerned with voltage sags and power interruptions. Investigation of the performance of these motors under practical supply conditions facing power...
The induction motor is the universal workhorse of modern industry. However, in past 2-3 decades attempts have been made to find alternative to this machine in various applications. It is demonstrated that permanent magnet synchronous motors and synchronous reluctance motors could be better choice in variable speed applications. From energy conservation point of view, suitability of these machines...
Line Start Permanent Magnet Synchronous motors are attracting growing attention for high duty factor industrial applications. Investigation of the performance of these motors under practical supply conditions facing power quality problems is the need of time. Voltage sags and short time interruptions contribute to 80% power quality related problems. In this paper, the behavior of this motor is studied...
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