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In recent years, urban rail systems have developed drastically. In these systems, when induction electrical machine suddenly brakes, a great package of energy is produced. This package of energy can be stored in energy storage devices such as battery, ultra-capacitor and flywheel. In this paper, an electrical topology is proposed to absorb regenerative braking energy and to store it in ultra-capacitor...
New energy management strategies for hybrid electric vehicles (HEV) play an important role on HEV's future. In order to achieve high performances, less fuel consumption and pollution, and higher efficiency, modern strategies should be employed. Fuzzy approach is one of the most popular and powerful techniques in energy management and optimization which are developed for HEVs. On the other hand, separated-axle...
Due to significant increase in the demand of electric motors, design and manufacturing of high efficiency motors and related variable speed drives has been a major interest by many suppliers. Brushless DC (BLDC) motor has many advantages including high torque capability. In this paper, the possibilities of direct power control (DPC) of BLDC motors fed by voltage source inverter have been studied....
One-Cycle Control (OCC), as a unified constant-frequency integration control strategy for current control of brushless dc (BLDC) motor drive is presented in this paper. Employing the one-cycle control strategy reduces high frequency torque ripple of conventional hysteresis current controllers that leads to lower acoustic noise and vibration of the drive. Moreover, to enhance reliability and reduce...
Brushless DC (BLDC) motor is getting more attention due to its high efficiency, good performance and ease of control for many applications. This paper presents the design and implementation of a torque controller for a BLDC motor drive using the TMS320LF2407A digital signal processor (DSP) produced by Texas Instruments. At first, a theoretical analysis of a BLDC motor drive is presented and the validity...
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