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Bhim Singh - One of the best experts on this subject based on the ideXlab platform.

  • EV battery charger with non-inverting output voltage-based bridgeless PFC Cuk Converter
    IET Power Electronics, 2019
    Co-Authors: Bhim Singh, Radha Kushwaha
    Abstract:

    This study proposes an improved electric vehicle (EV) battery charger with a non-inverting output voltage-based bridgeless power factor correction (PFC) Cuk Converter and a flyback Converter for controlling the battery current in constant-current-constant-voltage charging regions. The proposed EV charger eliminates the need for an extra inverse amplifier, which is used for the negative to positive output voltage conversion in a conventional Cuk PFC Converter. Therefore, the control of the Converter is easy to implement and the cost of the charger is also reduced. Moreover, the design of the charger is proposed for discontinuous conduction mode operation, which comes with the inherent advantages of reduced sensors, low reverse recovery in diodes, and zero current switching. The proposed EV charger, with improved efficiency, operates satisfactorily to comply with the IEC61000-3-2 standard for power quality at steady state and for sudden perturbations in mains voltage.

  • modified dual output Cuk Converter fed switched reluctance motor drive with power factor correction
    IEEE Transactions on Power Electronics, 2019
    Co-Authors: Aniket Anand, Bhim Singh
    Abstract:

    The control of a switched reluctance motor (SRM) drive is proposed with a front end power factor correction (PFC) Converter. It uses a modified Cuk Converter-fed SRM drive to improve power quality at ac mains. The Converter configuration consists of two Cuk Converters and each of them operates separately for two half-cycles of the supply voltage. The proposed Converter generates two identical voltages across two output capacitors to feed a split capacitor Converter of a four-phase SRM drive. The proposed pulsewidth modulated ac–dc Converter operates in the discontinuous conduction mode to reduce its size and cost by eliminating couple of sensor requirements. The incorporated voltage control loop regulates the dc-link voltage with PFC at ac mains. The SRM is considered for the proposed drive because of its low cost and constructional ease. The motor speed is controlled over a wide range by regulating the PFC Converter output dc voltage. The proposed SRM drive is tested for steady-state and dynamic state conditions on a developed prototype in the laboratory. The obtained test results demonstrate good drive performance and line drawn power quality. The input current total harmonic distortion is observed within a limit of a standard.

  • solar powered water pumping station utilizing improved Cuk Converter integrating to storage system
    National Power Systems Conference, 2018
    Co-Authors: Anjanee Kumar Mishra, Bhim Singh
    Abstract:

    This paper proposes a reliable and cost effective solution for an uninterruptable and full volume of water supply. The PV array power is a primary source of energy whereas the battery energy storage (BES) acts as a backup source. The charging and discharging control of BES system is incorporated by the bidirectional control of a buck-boost Converter. Whereas, the optimization of PV array is achieved with the help of an improved perturb and observation (P&O) maximum power point tracking (MPPT) control through proposed modified Cuk Converter. Both the modified Cuk Converter and bidirectional buck-boost Converter are working in continuous inductor current (CIC) mode to reduce the stress on their components. Moreover, the fundamental switching of the mid-point Converter makes the overall system efficient and eliminates the necessity of any current sensors on the motor side. Test results of the proposed system obtained on a developed prototype and their sound agreement with the Matlab/Simulink modeling based simulated results, validate the aptness of the developed system in real-time environment.

  • A Power Quality Improved EV Charger with Bridgeless Cuk Converter
    2018 IEEE International Conference on Power Electronics Drives and Energy Systems (PEDES), 2018
    Co-Authors: Radha Kushwaha, Bhim Singh
    Abstract:

    A bridgeless Cuk Converter based EV (Electric Vehicle) battery charger is designed and developed in this work. It provides low cost and high power density based charging solution for EV. This charger incorporates less number of devices operating over one switching cycle, which reduces the additional conduction loss incurred by a diode bridge rectifier of conventional charger and hence, improves the charger efficiency. During constant current and constant voltage regions, the commands for battery charging, are synchronized by a flyback Converter. The proposed charger draws a sinusoidal current from AC mains along with the total harmonic distortion (THD) in supply current is reduced to the limits as per the IEC 61000-3-2 standard. The proposed charger is designed in discontinuous conduction mode (DCM) with the desirable inherent zero current switching operation and low reverse recovery losses in circuit diodes. The proposed charger is tested to demonstrate the improved power quality. Test results confirm the improved performance of the proposed charger.

  • solar powered water pumping system employing switched reluctance motor drive
    IEEE Transactions on Industry Applications, 2016
    Co-Authors: Bhim Singh, Anjanee Kumar Mishra, Rajan Kumar
    Abstract:

    This paper presents a solar photovoltaic array fed water pumping system employing a switched reluctance motor (SRM) drive. The electronic commutation of the SRM drive at fundamental frequency offers reduced switching losses in a mid-point Converter and considerably increases the efficiency of proposed system. The speed of SRM is controlled by varying the dc-bus voltage of the mid-point Converter. A dc–dc Cuk Converter operating in continuous conduction mode (CCM) is used for dc-bus voltage control. The CCM operation of inductors helps to reduce the ringing effect and decreases the losses of dc–dc Converter. Current and voltage stresses on devices including switching stress of Cuk Converter are also reduced in CCM. The Cuk Converter facilitates the continuous and smooth input/output currents to SRM drive with boundless region for maximum power point tracking (MPPT) operation. The adjustment in step size of an incremental conductance MPPT algorithm facilitates the soft starting of SRM drive. The proposed system, subjected to dynamically atmospheric conditions is designed, modeled, and simulated using MATLAB/Simulink environment. A prototype of proposed configuration is also developed and its performance is validated with test results for the control of speed over varying insolation levels.

Vashist Bist - One of the best experts on this subject based on the ideXlab platform.

  • a unity power factor bridgeless isolated Cuk Converter fed brushless dc motor drive
    IEEE Transactions on Industrial Electronics, 2015
    Co-Authors: Vashist Bist, Bhim Singh
    Abstract:

    This paper presents a power factor correction (PFC)-based bridgeless isolated Cuk Converter-fed brushless dc (BLDC) motor drive. A variable dc link voltage of the voltage source inverter (VSI) feeding the BLDC motor is used for its speed control. This allows the operation of VSI in fundamental frequency switching to achieve an electronic commutation of the BLDC motor for reduced switching losses. A bridgeless configuration of an isolated Cuk Converter is derived for the elimination of the front-end diode bridge rectifier to reduce conduction losses in it. The proposed PFC-based bridgeless isolated Cuk Converter is designed to operate in discontinuous inductor current mode to achieve an inherent PFC at the ac mains. The proposed drive is controlled using a single voltage sensor to develop a cost-effective solution. The proposed drive is implemented to achieve a unity power factor at the ac mains for a wide range of speed control and supply voltages. An improved power quality is achieved at ac mains with power quality indices within the limits of the IEC 61000-3-2 standard.

  • pfc Cuk Converter fed bldc motor drive
    IEEE Transactions on Power Electronics, 2015
    Co-Authors: Vashist Bist, Bhim Singh
    Abstract:

    This paper deals with a power factor correction (PFC)-based Cuk Converter-fed brushless dc motor (BLDC) drive as a cost-effective solution for low-power applications. The speed of the BLDC motor is controlled by varying the dc-bus voltage of a voltage source inverter (VSI) which uses a low frequency switching of VSI (electronic commutation of the BLDC motor) for low switching losses. A diode bridge rectifier followed by a Cuk Converter working in a discontinuous conduction mode (DCM) is used for control of dc-link voltage with unity power factor at ac mains. Performance of the PFC Cuk Converter is evaluated under four different operating conditions of discontinuous and continuous conduction modes (CCM) and a comparison is made to select a best suited mode of operation. The performance of the proposed system is simulated in a MATLAB/Simulink environment and a hardware prototype of the proposed drive is developed to validate its performance over a wide range of speed with unity power factor at ac mains.

  • improved power quality bridgeless Cuk Converter fed brushless dc motor drive for air conditioning system
    Iet Power Electronics, 2013
    Co-Authors: Bhim Singh, Vashist Bist
    Abstract:

    This study presents a bridgeless Cuk Converter-fed brushless DC (BLDC) motor drive for an air conditioning system. A new approach of speed control of BLDC motor is proposed by controlling the voltage at DC bus using a single voltage sensor. The proposed drive utilises a bridgeless Cuk Converter operating in discontinuous inductor current mode (DICM) for the power factor correction (PFC) and improved power quality (PQ) at the AC mains for a wide range of speed control. The bridgeless Cuk Converter operating in a DICM gives an inherent PFC and requires a simple voltage follower approach for the voltage control. The bridgeless Converter topology is designed for obtaining the low conduction losses and requirement of low size of heat sink for the switches. The proposed system is designed and its performance is simulated for an air conditioning system to operate over a wide range of speed control with near unity power factor at AC mains. Finally, the performance of the proposed drive obtained in simulation is validated with test results on a developed drive for its operation over a wide range of speed control with improved PQ at AC mains.

Heri Suryoatmojo - One of the best experts on this subject based on the ideXlab platform.

  • Perbaikan Faktor Daya Menggunakan Cuk Converter pada Pengaturan Kecepatan Motor Brushless DC
    Lembaga Penelitian dan Pengabdian kepada Masyarakat (LP2M), 2017
    Co-Authors: Hadyan Perdana Putra, Heri Suryoatmojo, Sjamsjul Anam
    Abstract:

    Brushless DC motor (BLDC) adalah mesin listrik yang sangat serbaguna. Secara konstruksi, BLDC adalah motor sinkron dengan gulungan ketat dan magnet permanen dipasang pada rotor. Dengan tidak menggunakan sikat dan komutator, sikat kerusakan dan percikan api tidak ditemukan di motor ini dan membuat BLDC lebih efisien daripada jenis lain dari motor listrik. BLDC digunakan dalam berbagai aplikasi, seperti aplikasi rumah tangga, transportasi, aerospace, pemanasan, ventilasi, robotika, dan banyak lainnya. Dalam operasi BLDC menggunakan sumber AC, rectifier ​​dan menghubungkan kapasitor umumnya digunakan. Dan juga, karena BLDC perlu gelombang saat persegi untuk bekerja, penggunaan inverter diperlukan. Inverter juga digunakan untuk tujuan kontrol kecepatan di kontrol kecepatan BLDC konvensional. Kontrol kecepatan konvensional yang hanya menggunakan DBR dan inverter menghasilkan harmonik yang besar yang berarti mengurangi faktor daya juga. Untuk mengatasi masalah ini, dapat digunakan DC-DC konverter antara rectifier dan inverter. Pada penelitian ini akan diteliti pengaruh mode Cuk Converter sebagai penghubung antara DBR dan inverter terhadap faktor daya sumber

  • ¬MPPT Pada Sistem PV Menggunakan Algoritma Firefly dan Modified P&O dengan Konverter Hybrid Cuk terkoneksi ke Grid Satu Phasa di Bawah Kondisi Partial Shaded
    Lembaga Penelitian dan Pengabdian kepada Masyarakat (LP2M), 2017
    Co-Authors: Dhuhari Chalis Bani, Heri Suryoatmojo
    Abstract:

    Abstrak— Photovoltaic (PV) merupakan sumber energi terbarukan yang paling banyak dijumpai di alam serta merupakn energi alternatif yang sangat pesat perkembangannya. Untuk mengahasilkan daya, sebuah PV dipengaruhi sebuah nilai intensitas cahaya matahari yang mengenainya. Sebuah sistem PV membutuhkan sebuah kontrol yang bertujuan untuk meningkatkan efisien daya PV tersebut. Kontrol ini adalah Maximum Power Point Tracking (MPPT) yang dapat mengoptimalkan daya yang dihasilkan oleh PV.  Sebuah PV hanya menghasilkan nilai tegangan yang rendah, untuk itu perlu menggunakan koverter DC-DC step up untuk menaikan rasio tegangan DC tadi. Untuk mengoptimalkan sistem ini, diperlukan sebuah konverter yang efisien dan dapat menghasilkan rasio konversi tegangan yang tinggi. Pada penelitian menggunakan firefly algoritm (FFA) dan modified perturb and observe (P&O) sebagai MPPT untuk mendapatkan nilai daya optimal pada keluaran PV.  Konverter DC-DC yang digunakan adalah hybrid Cuk Converter boost mode yang memiliki rasio tegangan yang tinggi. Dari DC-link kemudian masuk ke inverter (VSI) yang diinterkoneksi dengan grid menggunakan current control. Hasil analisis simulasi menunjukan bahwa FFA dan P&O mampu menghasilkan daya PV yang optimum dengan riak yang kecil dan konverter hybrid Cuk Converter boost mode dapat menghasilkan rasio tegangan yang lebih besar dibandingkan konverter Cuk biasa.   Kata Kunci — PV, MPPT FFA, MPPT P&O, Hybrid Cuk Converter, DC-Link, Inverter Grid Connected

Bani, Dhuhari Chalis - One of the best experts on this subject based on the ideXlab platform.

  • MPPT Pada Sistem PV Menggunakan Algoritma Firefly Dan Modified P&O Dengan Konverter Hybrid Cuk Terkoneksi Ke Grid Satu Phasa Dibawah Kondisi Partial Shaded
    2016
    Co-Authors: Bani, Dhuhari Chalis
    Abstract:

    Bertumbuhnya permintaan energi dan naiknya harga bahan bakar fosil memicu untuk terus dilakukan penelitian tentang peningkatan efisiensi energi terbarukan, terutama sistem Photovoltaic (PV). Dimana PV adalah alat konversi energi dari cahaya matahari menjadi listrik yang memiliki potensi besar di Indonesia tapi masih memiliki efisiensi yang rendah. Untuk meningkatkan efisien sistem PV dapat dioptimalisasikan pada Maximum Power Point Tracking (MPPT) dan konverter DC-DC nya. Sebuah sistem PV array yang dilengkapi sebuah MPPT dengan algoritma gabungan firefly (FFA) dan modified perturb and observe (P&O) dan sebuah hybrid Cuk Converter bertujuan untuk meningkatkan efisiensi dari PV array tersebut. MPPT dengan algoritma firefly dapat menyelesaikan pemasalahan partial shaded pada PV array dan algoritma modified P&O dapat mempercepat iterasi dari MPPT tersebut. Sedangkan hybrid Cuk Converter digunakan untuk meredam ripple yang disebabkan algoritma modified P&O dan meningkatkan ratio konversi tegangan dengan duty ratio yang lebih rendah. Penelitian ini juga melakukan simulasi sebuah grid dengan sistem PV array. Sebuah inverter digunakan untuk menghubungkan antara sistem PV array dengan grid dan sebuah kontroler digunakan untuk mengatur pembagian beban antara PV dan grid. Hasil dari simulasi menunjukan bahwa Converter beserta kontrolnya mampu mengatur aliran daya maksimum saat perubahan iradiasi. ======================================================================================================================== Increasing of energy demand and fosil fuel cost causes many improvement in renewable energy researches, espescially for Photovoltaic (PV). PV is an energy conversion equipment which can convert sunlight becoming electricity. PV has a big potency for implemented in Indonesia, but it has a little efficiency. In increaring the efficiency, PV should be optimized by using Maximum Power Point Tracking (MPPT) and DC-DC Converter. In this research, an array PV system is equipped by a MPPT with Firefly algorithm (FFA) and modified perturb and observe algorithm (P&O) and a hybrid Cuk Converter which is aimed to increase the efficiency. MPPT with FFA can solve a partial shaded condition and modified P&O algorithm can make it faster in finding maximum power point. On the other hand, a hybrid Cuk Converter is utilized for redeucing ripple caused by modified P&O and increasing voltage ratio with lower duty ratio. This research also simulates the array PV system connected to grid. A single phase inverter is used in interfacing a sinle phase grid and a controller is used for controlling of load share of grid and PV array. The result of this research shows that Converter and the controller can flow the maximum power even in different irradiance level

Sanjeevikumar Padmanaban - One of the best experts on this subject based on the ideXlab platform.

  • An Ant Colony Optimized MPPT for Standalone Hybrid PV-Wind Power System with Single Cuk Converter
    'MDPI AG', 2019
    Co-Authors: Neeraj Priyadarshi, Sanjeevikumar Padmanaban, Vigna K. Ramachandaramurthy, Farooque Azam
    Abstract:

    This research work explains the practical realization of hybrid solar wind-based standalone power system with maximum power point tracker (MPPT) to produce electrical power in rural places (residential applications). The wind inspired Ant Colony Optimization (ACO)-based MPPT algorithm is employed for the purpose of fast and accurate tracking power from wind energy system. Fuzzy Logic Control (FLC) inverter controlling strategy is adopted in this presented work compared to classical proportional-integral (PI) control. Moreover, single Cuk Converter is operated as impedance power adapter to execute MPPT functioning. Here, ACO-based MPPT has been implemented with no voltage and current extra circuit requirement compared to existing evolutionary algorithms single Cuk Converter is employed to improve conversion efficiency of Converter by maximizing power stages. DC-link voltage can be regulated by placing Cuk Converter Permanent Magnet Synchronous Generator (PMSG) linked rectifier and inverter. The proposed MPPT method is responsible for rapid battery charging and gives power dispersion of battery for hybrid PV-Wind system. ACO-based MPPT provides seven times faster convergence compared to the particle swarm optimization (PSO) algorithm for achievement of maximum power point (MPP) and tracking efficiency. Satisfactory practical results have been realized using the dSPACE (DS1104) platform that justify the superiority of proposed algorithms designed under various operating situations

  • A Hybrid Moth-Flame Fuzzy Logic Controller Based Integrated Cuk Converter Fed Brushless DC Motor for Power Factor Correction
    MDPI AG, 2018
    Co-Authors: Kuditi Kamalapathi, Sanjeevikumar Padmanaban, Neeraj Priyadarshi, Farooque Azam, Jens Holm-nielsen, Chandrahasan Umayal, Vigna Ramachandaramurthy
    Abstract:

    This research work deals with a hybrid control system based integrated Cuk Converter fed brushless DC motor (BLDCM) for power factor correction. In this work, moth-flame optimization (MFO) and a fuzzy logic controller (FLC) have been combined and a moth-flame fuzzy logic controller (MFOFLC) has been proposed. Firstly, the BLDC motor modeling is composed with the power factor correction (PFC) based integrated Cuk Converter and BLDC speed is regulated using variable DC-Link inverter voltage which results in a low switching operation with fewer switched losses. Here, with the use of a switched inductor, the task and execution of the proposed Converter is redesigned. The DBR (diode bridge rectifier) trailed by a proposed PFC based integrated Cuk Converter operates in discontinuous inductor conduction mode (DICM) for achievement of better power factor. MFO is exhibited for gathering of a dataset from the input voltage signal. At that point, separated datasets are sent to the FLC to improve the updating function and minimization of torque ripple. However, our main objective is to assess adequacy of the proposed method, but the power factor broke down. The execution of the proposed control methodology is executed in the MATLAB/Simulink working platform and the display is assessed with the existing techniques.

  • modified high voltage conversion inverting Cuk dc dc Converter for renewable energy application
    IEEE Annual Southern Power Electronics Conference, 2017
    Co-Authors: Pandav Kiran Maroti, Sanjeevikumar Padmanaban, Frede Blaabjerg, Patrick Wheeler, Marco Rivera
    Abstract:

    The proposed exertion represents the modified high voltage conversion Cuk Converter for renewable energy application. The proposed Cuk Converter is a combination of the conventional boost Converter and Cuk Converter. The arrangement of the proposed Converter make, such as, it becomes the single controlled device DC-DC topology. The voltage conversion ratio of proposed Converter has increased by ten times of the conventional Cuk Converter at a duty ratio of 90%. The detailed analysis of the voltage conversion ratio and losses occur due to internal resistance of components is done in the paper. The current conversion ratio of proposed Converter is discussed in the paper. The proposed Converter is simulated in MatLab Simulink (2014) for 100W and regulated 10V input DC supply. The simulation results represent the existence and working of proposed Converter.

  • development of sliding mode controller for a modified boost Cuk Converter configuration
    Energies, 2017
    Co-Authors: Sanjeevikumar Padmanaban, Emre Ozsoy, Viliam Fedak, Frede Blaabjerg
    Abstract:

    This paper introduces a sliding mode control (SMC)-based equivalent control method to a novel high output gain Cuk Converter. An additional inductor and capacitor improves the efficiency and output gain of the classical Cuk Converter. Classical proportional integral (PI) controllers are widely used in direct current to direct current (DC-DC) Converters. However, it is a very challenging task to design a single PI controller operating in different loads and disturbances. An SMC-based equivalent control method which achieves a robust operation in a wide operation range is also proposed. Switching frequency is kept constant in appropriate intervals at different loading and disturbance conditions by implementing a dynamic hysteresis control method. Numerical simulations conducted in MATLAB/Simulink confirm the accuracy of analysis of high output gain modified Cuk Converter. In addition, the proposed equivalent control method is validated in different perturbations to demonstrate robust operation in wide operation range.