JCT - Volume 7 Issue 4 (April 2018)


Sr/No/ Title Pdf
1 Transient Stability Improvement of Power System with Modular Multilevel Converter Based HVDC
Tripti Tiwari and Dr. Sabina Elyse Mubeen

ABSTRACT - IPower electronics play major role in development of power transmission in HVDC. For developing country it required to transmit high power. This can be done by the implementation of HVDC. The presence of modular multilevel converter technology the power rating gets higher to higher. This paper presents the transient stability improvement of power system with modular multilevel converter based HVDC system. Here three level NPC converter topology is used as VSC converter for transmission of high power through HVDC line. A local fault is generated and checks the transient stability of the proposed system. The whole work is simulating in the MATLAB software for verification of system.
Keywords - MMC, NPC, HVDC, VSC, Active and Reactive power and P-Q theory etc. .
Page No. 01 - 05 .

2 A New Cascaded Multilevel Inverter for Higher Output Voltage Levels
Anil Kumar Jamra, Dr. K. T Chaturvedi and Dr. Seema Saxena3

ABSTRACT - The multilevel Inverter is a powerful electronic device widely used for high power utility applications. The main purpose of the multilevel inverter is to provide sinusoidal waveforms with low-level harmonic content to reduce distortion and improve power quality. Improving the inverter performance means improving the quality of the output voltage. In this research work proposed a 27 and 23 Level CHB-MLI topology of inverter and made an attempt of eliminating the desired harmonics in the output voltage waveform. The whole work is simulating in the MATLAB software for verification of system. .
Keywords— MMC, NPC, HVDC, VSC, Active and Reactive power and P-Q theory etc.
Page No. 06 -13 .
3 Implementation of Industrial and Household Solar Wind Hybrid Energy System
Suresh Kumar Marskole, Dr. K. T Chaturvedi and Dr. Seema Saxena3

ABSTRACT -Renewable energy sources have become a popular alternative electrical energy source where power generation in conventional ways is not practical. In the last few years the photovoltaic and wind power generation have been increased significantly. In this study, we proposed a hybrid energy system which combines both solar panel and wind turbine generator as an alternative for conventional source of electrical energy like thermal and hydro power generation. A simple control technique which is also cost effective has been proposed to track the operating point at which maximum power can be coerced from the PV system and wind turbine generator system under continuously changing environmental conditions. The entire hybrid system is described given along with comprehensive simulation results that discover the feasibility of the system. A software simulation model is developed in MATlab/Simulink.
Keywords— Keywords— Photo Voltaic, Maximum Power Point Tracking (MPPT), Direct Current (DC), Perturb and Observe and Incremental Conductance etc.
Page No. 14-17 .
4 Simulation Design of Independent High Boost DC-DC Converter Using Coupled Inductor
Vikas Nema, Dr. K. T Chaturvedi and Dr. Seema Saxsena

ABSTRACT -In this research paper proposed topologies and control of PWM DC – DC converters has been described. The PWM DC – DC converters have been very popular for the last three decades and widely used at all power levels. Main advantages of PWM converters are as low component count, high efficiency, constant frequency operation, relatively simple control and commercial availability of integrated circuit controllers, and having ability to achieve high conversion ratios for both step down and step-up application. The DC – DC converters are widely used in regulated switched-mode dc power supplies and dc motor drive applications. The high gain DC – DC converter with coupling inductor is design to boost low voltages to voltages into high range of 30 to 50 times input voltage. It is especially useful in boosting low solar panel voltage to high voltage, so that 230V ac can be generated. At the time the efficiency is also high and it is cost effective. It is a transformer less topology. This converter will work with input voltage of 25V DC, and generate constant output voltage of 440 V DC with the help of PI controller. To achieve high voltage output gain the converter output terminal and boost output terminal are connected in serially with the isolated inductor with less voltage stress on controlled power switch and power diodes. PSIM software has been used for simulation. Additionally, the energy stored in the leakage inductor of the coupled inductor can be recycled to the output capacitor. The operating principles and steady-state analyses of continuous-conduction mode are discussed in detail. To verify the performance of the proposed converter, a 345-W prototype sample is implemented with an input voltage range of 20–40 V and an output voltage of up to 440 V. The upmost efficiency of 93.3% is reached with high-line input.
Keywords— PWM, PSIM, PI Controller, Boost , Buck ,DC to DC converter and PWM etc.
Page No. 18-27 .
5 A Modified Multi Device Interface Implementation of I2C Master Bus controller
Shruti Dixit (M.tech Scholar) and Prof. Devendra Patle (Associate Professor & Head)

ABSTRACT - In this paper the I2C communication protocol, requirements, implementation constraints. Then implementing technology VLSI with its front end design domain is discussed. The generated hardware is designed to establish the I2C communication channel that will efficiently implement a communication from the FPGA device as the master and different peripherals as the slave. The work flow goes from specification of the complete system to functional design using VHDL language. Design verification with simulated waveform results are presented in the paper. Hardware verification is also done and practical results are presented.
Keywords— FPGA, VHDL, I2C, EEPROM, RTC, RS232 and SPI.
Page No. 1 - 6 .
6 Multilevel Active Boost Rectifier with Multicarrier PWM
Jitendra Kumar Patel, Prof. Rohit Gupta*(Assistant Professor), Prof. Amol Barve*(Head)

ABSTRACT - The application of power converter increase day by day in the industrial application. Due to invention of several power electronics based rectifier the process of converting power from ad to dc become easy. The boost converter is very key feature in the industry to increase dc voltage. But there is a problem in the conventional topology. This paper is based on the new topology for conversion of ac-dc boost converter. The working performance shows the benefit of the proposed system. Here in this paper discuss the multilevel active boost topology. The control circuit is based on multicarrier PWM technique. The whole work is simulated in MATLAB software. The result shows the performance of the proposed work.
Keywords— Active boost rectifier, Multilevel PWM, Multilevel topology.
Page No. 1 - 5 .