Pramod Agarwal

A Novel Double-Carrier-Based PWM for MMC With Three-Level Flying-Capacitor Submodules Featuring Enhanced Output Voltage Levels

Diptakantha Gogoi, Jyoti Ranjan Dash, Pramod Agarwal

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A Modified Single Carrier Based PWM Strategy for Modular Multilevel Converters With Improved Harmonic Performance and Capacitor Voltage Balancing

Diptakantha Gogoi, Jyoti Ranjan Dash, Pramod Agarwal

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Stability Enhancement of MEA Onboard DC Microgrid Using a Tuned-2DoF Feedback Controller

Ramavath Dhakeswar Naik, Pramod Agarwal, Jishnu Kavil Kambrath

As the aerospace industry rapidly evolves, traditional hydraulic, pneumatic, and mechanical systems are being replaced with advanced electrical technologies, leading to the development of more electrical aircraft (MEA). In such system, the turbo-engine is coupled to the starter/generator (S/G) through a flexible …

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A Modified Carrier-Based PWM Technique for 3-Phase 3-Level NPC Fed Induction Motor Drives

Diptakantha Gogoi, Asad Hussain, Pramod Agarwal

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A Modified Carrier-Based Interleaved Level-Shifted PWM Technique for 3-Phase 3L-Neutral Point Clamped Inverter FED Induction Motor Drives

Diptakantha Gogoi, Asad Hussain, Pramod Agarwal

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Adaptive Fuzzy Logic-Based SMO Utilizing Higher Order Soft-Sign Function With ROA Tuned PI Gains for Sensorless PMSM Drive

Rohit Raj, Pramod Agarwal, Sharmili Das

This article presents an advanced sensorless control strategy for permanent magnet synchronous motors (PMSMs) that integrates optimal proportional integral (PI) controller tuning via the remora optimization algorithm (ROA) with robust speed estimation using a fuzzy-adaptive higher-order soft-sign sliding mode observer (SMO). The …

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Mechanical-Feedback Predictive Torque Control for DC-Bus Regulation and Torsional Oscillation Mitigation in Aircraft IPM Starter/Generator Systems

Ramavath Dhakeswar Naik, Pramod Agarwal, Jishnu Kavil Kambrath

As the aerospace industry rapidly evolves, traditional hydraulic, pneumatic, and mechanical systems are being replaced with advanced electrical technologies, leading to the development of More Electric Aircraft (MEA). In such systems, the turbo-engine is coupled to the starter/generator (S/G) through a flexible …

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Sliding Mode Control-Based Harmonic Suppression and Switching Loss Reduction in Modular Multilevel Converters

Jyoti Ranjan Dash, Rohit Raj, Pramod Agarwal

Modular multilevel converters (MMCs) primarily face two major challenges, circulating currents that cause additional device stress and losses, and large submodule (SM) capacitors that increase system size. This article proposes a multiaspect control framework to address these issues. First, a dual sliding …

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Performance Analysis of Shaft Voltage in 3L-NPC fed Induction Motor using LS-PWM and PS-PWM with a Carbon brush

Asad Hussain, Jyoti Ranjan Dash, Rohit Raj, Pramod Agarwal

In this paper, the effects on shaft voltage generated in an Induction motor driven by a three-phase, three-level NPC inverter operating under high switching frequency PWM techniques are presented. High-frequency switching operation generates common-mode voltage, leading to shaft voltage build-up and potentially …

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Robust SMC Control Law for IFOC of Induction Motors Incorporating Hyperbolic Tangent Function

Rohit Raj, Asad Hussain, Jyoti Ranjan Dash, Pramod Agarwal et autres

This paper presents the implementation of a sliding mode control (SMC) law incorporating a hyperbolic tangent switching function as an alternative to traditional PI controllers for indirect field oriented control (IFOC) of an induction motor drive. While PI controllers are simple and …

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Informer Based Reduced Sensor State Estimation With Hysteresis-Aided Voltage Balancing in Modular Multilevel Converters

Prasanta Kumar Mohanty, Jyoti Ranjan Dash, Premalata Jena, Narayana Prasad Padhy et autres

This article presents a reduced-sensor control framework for modular multilevel converters (MMCs), offering an alternative to conventional schemes that rely heavily on internal sensor measurements. The proposed approach employs a transformer-based Informer model to estimate submodule (SM) capacitor voltages and arm currents …

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Enhanced Output Voltage Levels with Reduced Switching Frequency CVB for MMC Using Three-Level Flying Capacitor Submodules

Jyoti Ranjan Dash, Rohit Raj, Asad Hussain, Pramod Agarwal

The Three Voltage Level Flying Capacitor Sub-Module (3VL-FCSM) enhances Modular Multilevel Converters (MMCs) by reducing voltage ripple and circulating currents, while improving efficiency, making it a strong alternative to the conventional Half-Bridge Sub-Module (HBSM). However, a 3VL-FCSM arm with$N$SMs requires$2N$triangular carrier signals …

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