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This paper focus on the most important aspects of the bi-directional DC-DC converter in the hybrid electric vehicle(HEV) for the project applications.The different operating modes of converter are introduced under all HEV's work condition.Based on summarization, the demerits including low efficiency at light load and the uncontrolled discontinuous current when charging for the battery are derivated...
This paper presents a comprehensive research on torque ripples of brushless dc motor drive in conduction region based on the mathematical models.The phenomenon of torque ripples of conduction exists because of diode freewheeling happened under the conventional PWM schemes. Through theoretical and mathematical analysis, a new method for reducing the torque ripple in brushless dc motors with a single...
High dc gain step-up dc-dc converter continues drawing lots of interests in on-line UPS systems to interface the battery power to unity. Conventional methods, in which using non-isolated converters including cascade converters, can achieve high dc gain but compromise efficiency, while the situation of employing isolated converters is just opposite. To combine the merits of these two type converters...
This paper presents a comprehensive research on torque ripples of brushless dc motor drive in conduction region based on the mathematical models.The phenomenon of torque ripples of conduction exists because of diode freewheeling happened under the conventional PWM schemes.Through theoretical and mathematical analysis, A new method for reducing the torque ripple in brushless dc motors with a single...
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