Conference Papers
Permanent URI for this collectionhttps://idr.nitk.ac.in/handle/123456789/28506
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Item A Novel Single-Pulse Operated SRM Drive with Improved Performance and Integrated On-board Charging Capability for EVs(Institute of Electrical and Electronics Engineers Inc., 2022) Faheemali, T.; Arun Dominic, D.; Prabhakaran, P.In this paper, a novel single-pulse operated SRM drive with integrated on-board charging capability is proposed. The proposed drive is designed for three modes of operation: motoring (driving), regenerative braking, and grid-to-vehicle (G2V) charging. For motoring and regenerative braking mode, single-pulse control (SPC) is utilized to reduce the switching frequency to fundamental value giving the advantage of re-duced switching losses and core losses. To reduce the torque ripple and improve the efficiency of the drive, modifications in the conventional SPC are incorporated and presented. In the proposed SRM drive, the Cuk converter is utilized as a front-end converter to provide a higher demagnetization voltage, eliminating negative torque production and hence improving the torque-ampere ratio. Furthermore, the bidirectional Cuk converter is utilized to provide variable magnetization voltage for speed control and to achieve power factor correction (PFC) operation during charging mode (G2V mode). As the proposed SRM drive supports integrated on-board charger functionality, it reduces the cost and improves the overall power density of the EV. Detailed analysis and MATLAB simulation results are presented to validate the efficacy of the proposed integrated SRM drive and control scheme. © 2022 IEEE.Item A Novel Boost Derived Input-Parallel Output-Series DC-DC Converter for Bipolar DC Microgrid(Institute of Electrical and Electronics Engineers Inc., 2023) Prasad, S.; Mandal, S.; Prabhakaran, P.; Arun Dominic, D.This paper illustrates a novel converter called Input Parallel Output Series Boost Cuk (IPOSBC) converter, designed specifically for low-voltage bipolar DC microgrid (BPDCMG) applications. The converter features a single-input dual-output configuration and utilizes an interleaved structure to minimize current ripple when connected to renewable energy sources like solar PV or storage unit like battery in the BPDCMG. The paper presents a dynamic model of the proposed converter and develops a closed-loop controller for current and voltage control operation. By connecting dispatchable sources such as batteries to the input terminals, the IPOSBC converter can also function in voltage control mode to regulate the bus voltage of BPDCMG system. Furthermore, the paper discusses an intriguing method to mitigate voltage imbalance in the BPDCMG without an active source, utilizing the IPOSBC converter as a DC compensator, like an active shunt filter or D-STATCOM in AC systems. Here, the converter operates without supplying or consuming power, except for converter losses. Simulation results depicting various operating modes are presented to validate the effectiveness of the IPOSBC converter. © 2023 IEEE.Item A Novel Active Switched-Inductor Based Hybrid Boost-Cuk Converter with High Voltage Gain(Institute of Electrical and Electronics Engineers Inc., 2023) Prasad, S.; Mandal, S.; Prabhakaran, P.; Arun Dominic, D.This paper presents a novel transformer less high gain DC-DC converter based on active switched inductor. The proposed converter features high voltage gain with reduced voltage stress across the power switch compared to the state-of-the-art converter topologies with same component count. The continuous input current of the converter facilitates suitable interface of a low voltage solar PV source to DC or AC grid having higher voltage level. Moreover, due to its bidirectional feature, the proposed converter is capable of interfacing battery or ultracapacitor to the traction inverter in an EV drive train. This paper illustrates operating principle and steady-state analysis of the proposed converter. Dynamic modelling and controller design have been discussed to regulate input current and output voltage of the converter. To validate the efficacy of the proposed converter, closed-loop simulation results has been presented. © 2023 IEEE.Item A Novel Input-Parallel Output-Series SEPIC-Cuk Converter for Bipolar Voltage Balancing(Institute of Electrical and Electronics Engineers Inc., 2023) Prasad, S.; Mandal, S.; Prabhakaran, P.; Arun Dominic, D.This article describes a novel Input-Parallel Output-Series SEPIC-Cuk (IPOSSC) converter formulated for application in low voltage bipolar DC microgrid (BDMG) systems. The proposed bi-directional converter adopts a single input dual output configuration with inherited common ground and employs an interleaved-structure to reduce source current fluctuations when linked to sustainable energy sources (SES) such as solar PV or energy storage elements (ESE) like batteries. The article includes the development of a dynamic model for this proposed circuit and formulates closed-loop controller for precise current and voltage regulation. Additionally, by integrating dispatchable sources like a battery into the source terminals, the IPOSSC can operate in voltage regulation mode to effectively control the bus voltage. Furthermore, the article explores an intriguing approach to counteract voltage unbalance in BDMG systems without relying on an active energy source connected to the source terminal. It harnesses the IPOSSC capabilities as a DC compensator, similar to an active shunt filter or D-STATCOM in AC systems, with the converter only incurring losses and not supplying or consuming power. The article substantiates the efficacy of the IPOSSC converter through simulation results depicting its performance in various operating modes. © 2023 IEEE.Item A Novel Switched-Inductor merged SEPIC-Cuk Converter with Enhanced Voltage Gain(Institute of Electrical and Electronics Engineers Inc., 2023) Prasad, S.; Mandal, S.; Prabhakaran, P.; Arun Dominic, D.This paper introduces a novel high voltage gain DC-DC converter that operates without a transformer, relying on switched-inductor. The proposed bi-directional converter achieves a notable increase in voltage gain and exhibits enhanced versatility by supporting both buck and boost execution in both power flow directions. This is achieved while minimizing stress on the components. The converter maintains a continuous input current and offers a bipolar output, making it well-suited for interfacing sustainable energy sources (SES) with a Bipolar DC microgrid (BPDCMG). Moreover, owing to its bidirectional feature, the proposed converter is adept at interfacing energy storage components (ESC) like batteries or ultracapacitors with the NPC inverter in an EV drive train. The paper illustrates the operating principles and steady-state analysis of the proposed converter. It further explores dynamic modelling and controller design to ensure regulation of source current and load voltage. Simulation results are presented to substantiate the efficacy of the introduced converter. © 2023 IEEE.Item A Novel Input-Parallel Output-Series SEPIC-Cuk Converter for Bipolar Voltage Balancing(Institute of Electrical and Electronics Engineers Inc., 2023) Prasad, S.; Mandal, S.; Prabhakaran, P.; Arun Dominic, D.This article describes a novel Input-Parallel Output-Series SEPIC-Cuk (IPOSSC) converter formulated for application in low voltage bipolar DC microgrid (BDMG) systems. The proposed bi-directional converter adopts a single input dual output configuration with inherited common ground and employs an interleaved-structure to reduce source current fluctuations when linked to sustainable energy sources (SES) such as solar PV or energy storage elements (ESE) like batteries. The article includes the development of a dynamic model for this proposed circuit and formulates closed-loop controller for precise current and voltage regulation. Additionally, by integrating dispatchable sources like a battery into the source terminals, the IPOSSC can operate in voltage regulation mode to effectively control the bus voltage. Furthermore, the article explores an intriguing approach to counteract voltage unbalance in BDMG systems without relying on an active energy source connected to the source terminal. It harnesses the IPOSSC capabilities as a DC compensator, similar to an active shunt filter or DSTATCOM in AC systems, with the converter only incurring losses and not supplying or consuming power. The article substantiates the efficacy of the IPOSSC converter through simulation results depicting its performance in various operating modes. © 2023 IEEE.Item A Three-Port Converter for Integrating Solar PV-Battery Systems with DC Loads(Institute of Electrical and Electronics Engineers Inc., 2024) Prasad, S.; Prabhakaran, P.; Arun Dominic, D.This paper presents a new three-port DC-DC converter circuit tailored for integrating solar PV and battery systems with DC loads, enabling single-stage energy conversion. The proposed design outperforms traditional non-isolated multi-input DC-DC converters by offering superior voltage boosting while utilizing fewer inductors. It operates flexibly as a single-input dual-output, dual-input single-output, or single-input single-output system, adapting seamlessly to varying energy flows between sources and loads. Additionally, it ensures maximum power point tracking for the solar PV source and maintains output voltage regulation through a multi-objective control architecture based on competitive mode selector. Steady-state and dynamic simulation results are provided to validate the performance of the converter across multiple operating modes. © 2024 IEEE.Item A Four-Port Buck-Boost Converter with Dual-Input and Bipolar-Output(Institute of Electrical and Electronics Engineers Inc., 2024) Prasad, S.; Prabhakaran, P.; Arun Dominic, D.This article explores a novel Zeta-derived four-port DC-DC converter circuit designed for hybrid energy integration. The proposed circuit offers substantial voltage gain and enhanced versatility, supporting both buck and boost operations in both power flow directions. Its bidirectional functionality and inherently balanced bipolar voltage output make the converter perfectly suited for integrating energy storage components such as batteries and ultra-capacitors with a neutral point clamped inverter in electric vehicle drive train or bipolar DC microgrid. Notably, there are no voltage restrictions for connections at the input port. The paper elaborates on the operating principles and provides steady-state simulation results to confirm the performance of the proposed topology across various operational modes. © 2024 IEEE.