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Your search keyword '"VISHNURAM, Pradeep"' showing total 140 results
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140 results on '"VISHNURAM, Pradeep"'

15. Experimental analysis of passivity‐based control theory for permanent magnet synchronous motor drive fed by grid power.

Author

Belkhier, Youcef, Abdelyazid, Achour, Oubelaid, Adel, Khosravi, Nima, Bajaj, Mohit, Vishnuram, Pradeep, and Zaitsev, Ievgen

Subjects
PERMANENT magnet motors, PASSIVITY-based control, ELECTRIC power distribution grids, MOMENTS of inertia, INDUSTRIAL capacity
Abstract

Controlling the Permanent Magnet Synchronous Motor (PMSM) can be challenging due to the nonlinearity of its dynamics, which makes it difficult to design control strategies that are both robust and effective. To address this challenge, this paper presents a novel control strategy rooted in the concept of passivity that combines field‐oriented control (FOC). This strategy compels the PMSM to accurately follow velocity and electrical torque trajectories. The approach, known as passivity‐based control (PBC), entails reshaping the inherent system energy while introducing the necessary damping to attain the desired objectives. A crucial aspect involves identifying workless force terms within the process model. Despite their presence, these terms do not impact the energy balance and stability properties. As a result, eliminating these terms is unnecessary. This simplicity in control architecture not only preserves system stability but also bolsters overall robustness. The system's overall stability and the current tracking error's exponential convergence have both been demonstrated analytically. In order to maintain stability, the controller accounts for the nonlinearities of the plant and approximates the unstructured dynamics of the PMSM. The proposed control is designed using the dq model of the PMSM, which avoids the model's structure destruction due to singularities, since the dq model does not depend explicitly on the rotor angular position. Experimental results shown further, illustrate speed and position control with a desired pair calculated by a filter or a proportional‐integral (PI) controller for speed control and a proportional‐integral‐derivative (PID) controller for position control. Also the correlation between practical and theoretical results is given as well as the robustness test in relation to the uncertainties of the PMSM's inertia moment. The results demonstrates the effectiveness of the proposed strategy in controlling the PMSM under different operating conditions, highlighting its potential for industrial applications. [ABSTRACT FROM AUTHOR]

Published
2024
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37. Estimation of Solar Radiation with Consideration of Terrestrial Losses at a Selected Location—A Review.

Author

Gupta, Shubham, Singh, Amit Kumar, Mishra, Sachin, Vishnuram, Pradeep, Dharavat, Nagaraju, Rajamanickam, Narayanamoorthi, Kalyan, Ch. Naga Sai, AboRas, Kareem M., Sharma, Naveen Kumar, and Bajaj, Mohit

Abstract

The United Nations has set an ambitious goal to achieve net zero carbon emissions by 2050. This objective requires shifting towards green and renewable energy sources instead of conventional fossil fuels to address the global energy crisis without emitting greenhouse gases. While the energy radiated by the sun is one of the most abundant sources of energy available, its efficient and optimal use remains a significant challenge. To facilitate solar-energy-based applications, estimating the amount of solar energy available is crucial. Empirical and soft computing is the most-used method to estimate solar energy. This paper aims to analyze the existing techniques used in various models for estimating and predicting the quantity and quality of solar radiation using readily available data. Additionally, the study aims to identify the most appropriate techniques for developing prediction models using available explanatory variables. To fully harness the potential of solar energy, it is necessary to limit the terrestrial loss of solar radiation by minimizing the harmful effects of anthropogenic factors that reduce the quantity and quality of solar radiation in the area. This paper provides valuable insights to identify opportunities to maximize the potential of solar energy in different locations. [ABSTRACT FROM AUTHOR]

Published
2023
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41. Comprehensive Study on Reduced DC Source Count: Multilevel Inverters and Its Design Topologies.

Author

Eswar, Kommoju Naga Durga Veera Sai, Doss, Mohan Arun Noyal, Vishnuram, Pradeep, Selim, Ali, Bajaj, Mohit, Kotb, Hossam, and Kamel, Salah

Subjects
CAPACITOR switching, TOPOLOGY, HARMONIC distortion (Physics), PULSE width modulation
Abstract

Due to cutting-edge innovations in industry and academia, research is more centered around multilevel inverters (MLIs), which play a significant role in different high/medium voltage and high-power applications when contrasted with traditional inverters. Relative analysis of the reduced DC source count and switch inverter topologies highlight its significant benefits, which include control complexity, switch count, source count, reliability, efficiency, cost, voltage stress, total harmonic distortion (THD), and power quality. When switched-capacitor technology is deployed, it is seen that with the assistance of 14 switches, a 53 level result is accomplished, and the THD is just around 1.41%, which is kept up with as per the IEEE 519-2014 norms. Whenever cascaded MLI topology is employed, the inversion efficiency is more prominent, and is about 99.06%. Hence, this review focuses on a few of the late-evolved MLIs utilized, and the benefits and drawbacks for different topologies are examined. To assist with current modern research in this field and the decision of the proper inverter for various applications, a novel topology of an MLI can be planned later on. Different setups of MLIs have been exhaustively covered and reviewed. [ABSTRACT FROM AUTHOR]

Published
2023
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