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This paper proposes a new hybrid carrier-based PWM technique for parallel interleaved two-level (2L) three-phase voltage source inverters (VSIs) analyzed as a single 3L inverter for line current ripple reduction. The carriers are interleaved to reduce the load side harmonics. However, this allows circulating current to flow between the VSIs. Using the proposed PWM technique, the circulating current...
This paper proposes a simple method for identification of the sub-sectors of the space vector diagram in which the reference phasor tip lies and using that; carrier-based implementation of the Space vector pulse width modulation (SVPWM) is derived for multi-level PWM inverters. This method is based on the line equations of the n-level inverter space vector diagram. Sub-sector identification and thereby...
In this report, we present a systematic design and implementation of the Smart Console for vehicles which makes use of fingerprint for the purpose of vehicle ignition. The system includes on board hardware construction through digital display with a speedometer (Speed indicated in kmph), odometer (Distance covered in km). It also includes light intensity control for headlight using LDR and timer circuits...
The wetting characteristics of Sn-3.5Ag lead-free solder alloy on nickel-coated aluminum substrates in air (ambient), nitrogen, and argon atmospheres were investigated. The contact angles for the solder alloy obtained under air and argon atmospheres were in the range of 36°-38°. With nitrogen atmosphere the contact angle was found to be significantly lower at about 26°. Solder solidifying in air exhibited...
The problem of voltage sags and Swells and its severe impact on sensitive loads is well known. To solve this problem, custom power devices are used. One of those devices is the Dynamic Voltage Restorer (DVR), which is one of the most efficient and effective modern custom power devices used in power distribution networks. This paper described DVR principles and voltage correction methods for balanced...
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