iosr-JEEE   International Conference on Emerging Trends in Engineering & Management

Abstract: A novel high voltage-boosting converter topology is explained in this paper. By changing the connection position of the anode of the diode two types of converters are obtained-Type1 and Type2.These converters are constructed based on boost inductors and capacitors and have different voltage conversion ratios. Furthermore, although there are three switches in each converter, only one half-bridge gate driver and one low-side gate driver are needed, but no isolated gate driver would be needed. In this paper, closed loop
control of type2 converter using fuzzy logic controller is explained. Some simulated results are provided to verify the effectiveness of the proposed converter.
Keywords: Boost converter, fuzzy logic controller, voltage-boosting converter, voltage conversion ratio.

[1] K. I. Hwu, C. F. Chuang, and W. C. Tu, "High Voltage-Boosting Converters Based on Bootstrap Capacitors and Boost Inductors",
IEEE Transactions on Industrial Electronics, Vol. 60, No. 6, June 2013
[2] W. Li and X. He, "Review of non-isolated high step-up dc/dc converters in photovoltaic grid-connected applications," IEEE Trans.
Ind. Electron., vol. 58, no. 4, pp. 1239–1250, Apr. 2011.
[3] H. Tao, J. L. Duarte, and. A.M. Hendrix, "Line-interactive UPS using a fuel cell as the primary source," IEEE Trans. Ind. Electron.,
vol. 55, no. 8,pp. 3012–3021, Aug. 2008.
[4] M. Zhu and F. L. Luo, "Series SEPIC implementing voltage-lift technique for dc-dc power conversion," IET Power Electron., vol. 1,
no. 1, pp. 109–121, Mar. 2008.
[5] Y. He and F. L. Luo, "Analysis of Luo converters with voltage-lift circuit, "Proc. Inst. Elect. Eng.—Elect. Power Appl., vol. 152, no.
5, pp. 1239–1252, Sep. 2005.
[6] L. S. Yang, T. J. Liang, and J. F. Chen, "Transformerless dc-dc converters with high step-up voltage gain," IEEE Trans. Ind.
Electron., vol. 56, no. 8,pp. 3144–3152, Aug. 2009.
[7] C. E. Silva, R. P. Bascope, and D. S. Oliveira, "Proposal of a new high voltage-boosting converter for UPS application," in Proc.
IEEE ISIE,2006, pp. 1288–1292..

Abstract: In this paper an integrated single stage-single single switch AC-DC converter is proposed which act as a high power factor driver for power LED lamps. The circuit ensures a stable source of supply and good efficiency for the lamp. The converter is operated in discontinuous conduction mode and depending on the output power ratings, the power stage to drive an LED can be classified in to single-stage and two-stage structures. The single-stage structure is for low-power LED lighting applications is used in this paper. The
control method used in circuit is the fuzzy logic control which has inherent merits of flexibility and ease in design. The proposed converter provides high efficiency, high PF, low total harmonic distortion even when the output power is very low and the absence of transformer reduces the cost and complexity of the converter.

Keywords: Double Buck, Fuzzy Logic Controller, Power factor correction, LED Lamp, Transformer-less, Single Stage, Single Switch.

[1] X. Xie, J. Wang, C. Zhao, Q. Lu, and S. Liu, "A novel output current estimation and regulation circuit for primary side controlled
high power factor single-stage flyback LED driver," IEEE Trans. Power Electron., vol. 27, no. 11, pp. 4602–4612, Nov. 2012.
[2] X. Qu, S.-C. Wong, and C. K. Tse, "Resonance-assisted buck converter for offline driving of power LED replacement lamps," IEEE
Trans. Power Electron., vol. 26, no. 2, pp. 532–540, Feb. 2011.
[3] D. D. C. Lu, H. H. C. Iu, and V. Pjevalica, "A Single-Stage AC/DC converter with high power factor, regulated bus voltage, and
output voltage," IEEE Trans. Power Electron., vol. 23, no. 1, pp. 218–228, Jan. 2008.
[4] S. K. Ki and D. D. C. Lu, "Implementation of an efficient transformerless single-stage single-switch ac/dc converter," IEEE Trans.
Ind. Electron., vol. 57, no. 12, pp. 4095–4105, Dec. 2010.
[5] D. Lu and S. Ki, "Light-load efficiency improvement in buck-derived single-state single-switch PFC converters," IEEE Trans.
Power Electron., vol. 28, no. 5, pp. 2105–2110, May 2013.
[6] S.-K. Ki and D. D.-C. Lu, "A high step-down transformerless single-stage single-switch AC/DC converter," IEEE Trans. Power
Electron., vol. 28, no. 1, pp. 36–45, Jan. 2013.
[7] Yu chen, Zhihao Zhong, and Yong Kang " Design and implementation of a transformerless Single-stage single-switch double-buck
converter with low dc-link voltage, high step-down, and constant input power factor feature" IEEE Trans. Power Electronics, Vol.
29, No. 12, December 2014.

Abstract: The project proposed is to feed the back-up battery of UPS system from PV panel with a modified Single Ended Primary Inductance Converter (SEPIC). In this project, utilization of a modified SEPIC for control of photovoltaic power is adopted for charging the back-up battery of UPS system. The power will be directly fed from solar panel whenever enough power is generated from the PV system. So the supply from the mains is needed only when the power from the PV panel is not adequate. Hence this project mainly focused on reduction of power drawn from the grid by the use renewable energy.
Keywords - PV System, SEPIC, UPS.

[1] Roger Gules, Walter Meneghette Dos Santos, Flavio Aparecido Dos Reis, Eduardo Felix Ribeiro Romaneli, And Alceu
Andre Badin -A Modified Sepic Converter with high staticgain for renewable applications, IEEE, November 2014.
[2] C.Liu, B.Wu And R.Cheung- Advanced algorithm for control of photovoltaic systems.
[3] N.Femia, G.Petrone, G.Spagnuolo, M.Vitelli- A new analog MPPT technique: Teodi
[4] Buresch.M - Photovoltaic Energy Systems Design And Installation, McGraw-Hill, New York. 1983
[5] Q.Zhao And F.C.Lee- High-efficiency, high step-up DC–DC Converters, IEEE, Jan. 2003.
[6] G.Henn, R.Silva, P.Prac.A, L.Barreto, And D.Oliveira- Interleaved boost converter with high voltage Gain, IEEE, Nov. 2010.
[7] R.J.Wai And R.Y.Duan- High-efficiency power conversion for low power fuel cell generation system, IEEE, Sep. 2005.
[8] W. Li And X. He- An interleaved winding-coupled boost converter with passive lossless clamp circuits, IEEE Trans. Power
Electron, Jul. 2007.

Abstract: This paper deals with the comparison of a sensorless brushless DC (BLDC) motor drive fed by a buck-boost converter with Diode Bridge Rectifier (DBR) and a bridgeless (BL) buck-boost converter as a costeffective solution for low power applications. The single phase supply is fed to uncontrolled bridge rectifier, which is followed by a buck-boost converter used to control the voltage of DC link capacitor that feds the Voltage Source Inverter (VSI) of circuit with DBR whereas direct ACDC conversion is done in BL topology, reducing the conduction losses associated with DBR. Voltage of the DC link capacitor of the converter is
controlled to achieve the speed control of BLDC motor.

[1] V. Bist and B. Singh, "An adjustable speed PFC bridgeless buck-boost converter fed BLDC motor drive," IEEE Trans. Ind.
Electron., vol. 61, no. 6, pp. 2665-2677, Jun. 2014.
[2] S. Singh and B. Singh, "A voltage-controlled PFC Cuk converter based PMBLDCM drive for air-conditioners," IEEE Trans. Ind.
Appl., vol. 48, no. 2, pp. 832-838, Mar./Apr. 2012.
[3] B. Singh, B. N. Singh, A. Chandra, K. Al-Haddad, A. Pandey, and D. P. Kothari, "A review of single-phase improved power quality
ac-dc converters," IEEE Trans. Ind. Electron., vol. 50, no. 5, pp. 962-981, Oct. 2003.
[4] Y. Jang and M. M. Jovanovi´c, "Bridgeless high-power-factor buck converter," IEEE Trans. Power Electron., vol. 26, no. 2, pp.
602-611, Feb. 2011.
[5] B.Singh and V. Bist, "PFC Cuk converter fed BLDC motor drive "IEEE Trans.Power Electron.,vol.30,no.2,pp. 871-887,Feb. 2015.
[6] V. Bist and B. Singh,"A BL-CSC Converter-Fed BLDC Motor Drive With Power Factor Correction" IEEE Trans.Ind. Electron.,
vol.62, no.1, pp.172-183,Jan. 2015..

Abstract: A single switch integrated dual output converter for a standalone photovoltaic (PV) - battery – powered motor system is proposed in this paper. The converter is formed by combining a boost converter with a buck converter. With only a single transistor, the converter is able to perform three tasks simultaneously, namely, maximum-power point tracking (MPPT), battery charging and driving the motor at uniform speed. To achieve these control objectives, the two inductors operate in different modes such that variable switching frequency control and duty cycle control can be used to manage MPPT and output voltage regulation, respectively. Simulation results of the proposed converter are presented to serve the proof of concept.
Keywords: DC motor, Maximum Power Point (MPP) Tracking (MPPT), Photovoltaic (PV) systems, Variable frequency control, Duty cycle control.

[1] M. Sechilariu, B. Wang, and F. Locment, "Building integrated photovoltaic system with energy storage and smart grid
communication," IEEE Trans. Ind. Electron, vol. 60, no. 4, pp. 1607–1618, Apr. 2013.
[2] P. Carvalho, L. Carvalho, J. H. Filho, and R. Oliveira, "Feasibility study of photovoltaic powered reverse osmosis and pumping
plant configurations," IET Renew. Power Generation, vol. 7, no. 2, pp. 134–143, Mar. 2013.
[3] M. Elgendy, B. Zahawi, and D. Atkinson, "Assessment of perturb and observe MPPT algorithm implementation techniques for PV
pumping applications," IEEE Trans. Sustain. Energy, vol. 3, no. 1, pp. 21–33, Jan. 2012.
[4] J. M. Caracas, G. D. C. Farias, L. M. Teixeira, and L. D. S. Ribeiro, "Implementation of a high-efficiency, high-lifetime,and lowcost
converter for an autonomous photovoltaic water pumping system," IEEE Trans. Ind. Appl., vol. 50, no. 1, pp. 631–641,
Jan./Feb. 2014.
[5] G. Bayrak and M. Cebeci, "A PV based automation system for fish farms: An application study," in Proc. ELECO, Dec. 2011, pp.
I-23–I-27.

Abstract: This paper proposes a circuit based on bridgeless buck converter topology with a single power switch. The front end bridgeless buck converter designed in such a way to operate in discontinuous capacitor voltage mode (DCVM), it simplifies the control circuit. A high frequency transformer with centre tapped secondary used for energy transferring and isolation. Voltage at the secondary side of transformer is rectified using a full bridge rectifier circuit. The converter switch is controlled using a voltage follower approach which is the simplest control method adopted for DCVM operation. Low power output with almost unity power factor will be available with a better isolation.

[1] B. Singh et al., "A review of single-phase improved power quality AC–Dc converters," IEEE Trans. Ind. Electron., vol. 50, no. 5,
pp. 962–981, Oct. 2003
[2] A. Canesin and I. Barbi, "A unity power factor multiple isolated outputs switching mode power supply using a single switch," in
Proc. IEEE APEC, Mar. 1991, pp. 430–436
[3] A. A. Fardoun, E. H. Ismail, A. J. Sabzali, and M. A. Al-Saffar, "New efficient bridgeless Cuk rectifiers for PFC applications,"
IEEE Trans. Power Electron., vol. 27, no. 7, pp. 3292–3301, Jul. 2012
[4] E. H. Ismail, "Bridgeless SEPIC rectifier with unity power factor and reduced conduction losses," IEEE Trans. Ind. Electron., vol.
56, no. 4, pp. 1147–1157, Apr. 2009
[5] Y. Jang and M. M. Jovanovi´c, "Bridgeless high-power-factor buck converter," IEEE Trans. Power Electron., vol. 26, no. 2, pp.
602–611, Feb. 2011

Abstract: This project presents the need of Speed Control in Induction Motors. Out of the various methods of controlling Induction motors, FOC has proven to be the most versatile. One of the basic requirements of this scheme is the VSI Inverter. A MATLAB simulation along with real time implementation has developed. This project presents closed loop indirect field-oriented control (Vector control) of 3-phase Induction Motor. Based on the popular constant volts per hertz principle, two improvement techniques are presented: keeping maximum torque constant or keeping magnetic flux constant. A squirrel-cage induction motor drive system that provides constant maximum torque is simulated and tested.
Keywords - Induction motor drive,simulation of Indirect Field oriented control,imopleentation of Indirect field oriented control

[1] Gurmeet Singh and Gagan Singh, "A Fuzzy Pre-Compensated-PI Controller for Indirect Field Oriented Controlled Induction Motor
Drive" Innovative Applications of Computational Intelligence on Power, Energy and Controls with their impact on Humanity
(CIPECH,.2014
[2] Huan Liu and Han Cui "Study on a Sliding Mode Variable Structure Vector Control of Induction Motor Drives" IEEE Shenyang
University of Chemical Technology Shenyang University of Chemical Technology, Shenyang, Liaoning Province, 110142,
China,978-1-4673-1398-8/12/$31.00 ©2012
[3] G. Bhuvaneswari , Bhim Singh and Sandeep Madishetti "Three-Phase, Two-Switch PFC Rectifier Fed Three- Level VSI Based
FOC of Induction Motor Drive" IEEE 978-1-4673-0766-6/12/$31.00 ©2012
[4] Yen-Shin Lai, "Machine Modelling and Universal Controller for Vector-Controlled Induction Motor Drives", IEEE Transactions
on energy conversion, VOL. 18, pp.23-32 March 2003
[5] Bimal K. Bose, "Modern Power Electronics and AC drives", Pearson Education Asia.
[6] R.Krishnan, "Electric Motor Drives Modelling Analysis and Control" Prentice- Hall of India pvt. Limited, New Delhi, 2007.

Abstract: Conventional buck converter is used to step down the DC voltage In conventional DC/Dc converters, conversion ratio depends on the duty cycle of the switch. In these converters, duty cycle varies to fix the load voltage. These converters have difficulty with operating in very high or very low values of conversion ratios. Extreme duty cycle impairs the efficiency of the converters. In order to tackle this problem, many methods, using transformer, series converters with one switch, soft switching, and switched capacitor converters are employed. In this paper, a modified buck converter formed by two inductors and two diodes is considered in discontinuous conduction mode is given. And a comparative study is done to assess the performance of the switched inductor buck converter with the conventional buck converter in the aspect of lower conversion ratio at higher efficiency. The simulation work is carried out using MATLAB-SIMULINK and the results are obtained.
Keywords : buck converter, inductor, choppers

[1] D. Maksimovic and S. Cuk, "Switching converters with wide dc conversion range," IEEE Trans. Power Electron., vol. 6, pp. 149–
157, Jan.1991.
[2] V. Paceco, A. Nascimento, V. Farias, J. Viera, and L. Freitas, "A quadratic buck converter with lossless commutation," IEEE Trans.
Ind. Electron., vol. 47, pp. 264–271, Apr. 2001.
[3] A. Ioinovici, "Switched-capacitor power electronics circuits," IEEE Circuits Syst. Mag., vol. 1, no. 1, pp. 37–42, Jan. 2001
[4] K. Kuwabara, E.Miyachika, andM. Kohsaka, "New switching regulators derived from switched-capacitor dc–dc converters,"
[5] B. Axelrod, Y. Berkovich, and A. Ioinovici, "Switchedcapacitor/ switched-inductor structures for getting transformerless hybrid
DC-DC PWM converters",IEEE

Abstract: Asingle-phase hybrid cascaded inverter is proposed. It is based on two kinds of power devices - MOSFET and IGBT. The cascaded inverter consists of three H-bridges. The DC voltage of each H-bridge meets the proportional relationship of 1:2:4 and the three modules are connected in series at the AC side. This hybrid cascaded inverter can output at most 15 voltage levels at the AC side with rather low switching frequency. Voltage gradational modulation method is adopted. The proposed topology is compared with the seven level hybrid cascaded topology using carrier cascaded PWM. And THD is found to be less in proposed topology. MATLAB/SIMULINK platform are used to simulate the circuit operation and performance.

Keywords -Carrier cascaded PWM Technique, Hybrid Cascaded Multilevel Inverter, Total harmonic distortion (THD), and Voltage gradational method.

[1] YaosuoXue and MadhavManjrekar, "A New Class of Single-Phase Multilevel Inverters", IEEE Transactions on Power Electronics,
IEEE International Symposium on Power Electronics for Distributed Generation Systems, vol. 12, no.6, 565-570, October 2010.
[2] A. Nami, F. Zare, A. Ghosh, and F. Blaabjerg, "A hybrid cascade converter topology with series-connected symmetrical and
asymmetrical diode clamped H-Bridge cells",IEEE Transactions on Power Electronics, vol. 26, no. 1, pp. 5165, January 2011.
[3] P. Samuel, R. Gupta, and D. Chandra, "Grid interface of wind power with large split-winding alternator using cascaded multilevel
inverter",IEEE Transactions on Energy Conversions, vol. 26, no. 1, pp. 299-309, March 2011.
[4] J. S Lai and F.Z Peng, "Multilevel converters- A new breed of power converters",IEEE Transactions on Industry Applications, vol.
32, no. 3, pp. 509-517, May/June 1996.
[5] S. Khomfoi and N. Praisuwanna, "A hybrid cascaded multilevel inverter for interfacing with renewable energy resources",
International Power Electronics Conference, pp. 2912 2917, 2010.
[6] Z. Zheng, K.Wang, Lie Xu, and Yongdong Li, "A Hybrid Cascaded Multilevel Converter for Battery Energy Management Applied
in Electric Vehicles",IEEE Transactions on Power Electronics, vol. 29, no. 7, July 2014.
[7] X. Lu, Y. Ma, L. Huang, and S. Igarashi, "High Performance Hybrid Cascaded Inverter for Renewable Energy System",IEEE
Transactions on Power Electronics, vol. 25, no. 2, February 2011.