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Bi-directional switches, also called four quadrant switches (FQS), are the basic building blocks in many power converter circuits, such as cyclo-converters, matrix converters etc. Conventional approaches to realize bi-directional switch involves combination of unidirectional controllable blocking device (IGBT or MOSFET) and diode. In this approach, current flows through multiple devices for any direction...
The medium voltage (MV) high-speed drives are required for traction, wind energy, marine, aerospace, oil, and gas compressors applications. The MV converter must be able to switch at higher switching frequencies (> 5 kHz) to generate higher fundamental frequency AC input voltages for the motor (≥ 500 Hz) and thereby achieving high speed at the motor output (≥ 15000 rpm). This paper presents the...
To cater the need of expanding telecom network to rural areas with quality power supply poses a challenge as many areas are still unapproachable to the grid. PV based generation is envisaged to alleviate the problem providing maintenance free and robust in working in low operating cost. The proposed telecom power supply uses a high gain DC-DC MPPT converter having high efficiency and very low current...
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