Shashi Bhushan Singh

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The indices, namely, line voltage unbalance ratio (LVUR) and voltage unbalance factor (VUF), defined by NEMA and IEC, respectively, were highly recommended amongst the industrial engineers and researchers to quantify the condition of voltage unbalance. However, the existence of infinite voltage sets for fixed value of these indices produces erroneous(More)
This paper highlights the shortfalls, existing in the methods, currently used for the characterization of voltage sags, from recorded waveforms. Test waveform, available with IEEE data base, and data generated from Matlab<sup>&#x00AE;</sup> simulations, are used to reveal their ambiguities. It is found that none of the existing methods give accurate and(More)
This paper highlights the shortfalls of the NEMA and IEC defined indices for the quantification degree of voltage unbalance. It is shown that these indices are not accurate for the assessment of voltage unbalance conditions. The large variations in terminal voltage for fixed values of these indices result in vague assessment of the voltage unbalance by(More)
This paper studies the practical but challenging problem of motion planning for a deeply submerged rigid body. Here, we formulate the dynamic equations of motion of a submerged rigid body under the architecture of differential geometric mechanics and include external dissipative and potential forces. The mechanical system is represented as a forced(More)
This paper introduces a modified single-stage power factor correction (S2PFC) converter topology for high voltage, power and frequency (HVPF) applications which improves the power quality at utility AC side and at the load end. The modified proposed converter possess the ability of controlling the voltage and frequency independently and also simultaneously.(More)
This paper presents a novel converter for utility AC-high frequency AC boost converter for high power induction heating (IH), with in single-stage conversion. The proposed topology and applied control scheme improves the power quality at source side. The presented topology acts as a three-level multilevel boost rectifier cum PWM inverter. This reduce the(More)
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