free and research projects on electrical engineering
free and research projects on electrical engineering
Fractional Slot Permanent Magnet Brushless Machines and Drives for Electric and Hybrid Propulsion Systems
Fractional slot permanent magnet brushless machines having concentrated nonoverlapping windings have been the subject of research over last few years. They have already been employed in the commercial HEVs due to high torque density, high efficiency, low torque ripple, good flux-weakening and fault-tolerance performance. However, due to rich mmf harmonics, such machines exhibit relatively high […]
Recycling Ambient Microwave Energy With Broad-Band Rectenna Arrays
This paper presents a study of reception and rectification of broad-band statistically time-varying low-power-density microwave radiation. The applications are in wireless powering of industrial sensors and recycling of ambient RF energy. A 64-element dual-circularly-polarized spiral rectenna array is designed and characterized over a frequency range of 2–18 GHz with single-tone and multitone incident waves. The […]