Practical Realization of Three Phase Buck AC Converter Feeding Three Phase Star Connected RL Load Using FPGA Real Time Controller: Advanced Study | Chapter 1 | Emerging Trends in Engineering Research and Technology Vol. 5

 

A three phase bidirectional AC to AC buck converter circuit using power MOSFET is designed, rigged up and analyzed with three phase star connected RL load for electrical parameters such as output voltage, input current, input power factor, harmonic profile and efficiency using FPGA real time controller. The various PWM techniques such as ramp-DC symmetrical PWM (RDSPWM), ramp-triangular asymmetrical PWM (RTAPWM), sinusoidal asymmetrical PWM type-1 [SAPWM1] and sinusoidal asymmetrical PWM type-2 [SAPWM2] techniques are generated using FPGA real time controller in order to analyze the harmonic profile, input power factor and efficiency of the converter It is required to consider both harmonic profile and input power factor in order to increase the efficiency of power electronic converter. It is observed from experimental results that the RDSPWM technique gives lesser total harmonic distortion [THD] of output voltage and input current than other techniques. It is also observed that the SAPWM1 switching strategy gives high input power factor, more output voltage, high efficiency and moderate improvement of harmonic profile for the entire range of modulation index MI compared to other PWM techniques. Hence SAPWM1 technique is preferred for AC to AC converter than other techniques that renders easy filtration at lower cost.A

 

Author(s) Details

K. Venkatesha

1Department of Electrical and Electronics Engineering, Visvesvaraya Technological University, BNM Institute of Technology, Bengaluru, India.

H. A. Vidya

2Department of Electrical and Electronics Engineering, Visvesvaraya Technological University, Global Academy of Technology, Bengaluru, India.

 

Please see the book here :- https://doi.org/10.9734/bpi/etert/v5

 

THD Inspection of a Novel Envelop with a T Type (E-T) Multilevel Inverter with Reduced Switch Count | Chapter 8 | Engineering Research: Perspectives on Recent Advances Vol. 5

Modern-day switching has made inverters into complex circuitry with multiple levels. The overall power ratings of the inverters are improved by individual small powered devices. The unique structure of a multilevel inverter (MLI) synthesizes higher voltage levels with lower harmonics, without using transformers or series-connected synchronized switching devices. Multilevel inverters are a good choice for medium and low power applications. Multilevel inverters have found a wide place in the market for their good power quality output. This paper proposes a new Envelope with T type Novel Multilevel inverter with unequal sources and reduced switch count. The working principle of the circuit is explained. Firing angle calculations are done using a simple looping technique and later Genetic Algorithm is used to obtain optimum firing angles using the Selective Harmonic Elimination technique and improve the THD of the output voltage. Comparison is made between different types of inverters. The proposed E-T Type inverter circuit uses less number of semiconductor switches compared to previous circuits. Hence, it is concluded that the proposed inverter can be used for speed control of drives.

 

Author (s) Details

 

Rashmy Deepak
Department of Electrical and Electronics Engineering, RNS Institute of Technology, Bangalore, India.

 

S Sumathi
RNSIT, Bangalore, India.

 

Please see the book here:- https://doi.org/10.9734/bpi/erpra/v5/4562

Design, Modeling and Performance Analysis of Brushless Doubly-fed Reluctance Generator for Windmills | Chapter 3 | Engineering Research: Perspectives on Recent Advances Vol. 4

Wind generators play a crucial role in optimizing energy efficiency in wind energy systems. The selection of a suitable generator type is essential, as different generators are better suited for varying operational and environmental conditions. This paper focuses on the Brushless Doubly-Fed Reluctance Generator (BDFRG) and presents a detailed performance analysis of this generator. The study involves the development and simulation of the BDFRG model using MATLAB/Simulink software. The model is subjected to comprehensive analysis under various operational scenarios. Key performance parameters such as Total Harmonic Distortion (THD), Integral Square Error (ISE), Integral Error (IE), and Integral Time Error (ITE) are evaluated. These parameters provide a quantitative assessment of the generator’s performance in terms of efficiency, stability, and output quality. To validate the results, the performance of the BDFRG is compared with conventional generator systems, specifically the Doubly-Fed Induction Generator (DFIG) and the Brushless Doubly-Fed Induction Generator (BDFIG). The comparative analysis highlights the advantages of the BDFRG over these traditional systems. The results demonstrate that the BDFRG outperforms its counterparts across all evaluated parameters, making it a promising choice for achieving higher efficiency and reliability in wind energy applications. This study underscores the potential of the BDFRG in advancing the performance of wind energy systems and provides valuable insights into its application in real-world scenarios.

 

Author (s) Details

 

Kalaivani M. N
Department of Electrical and Electronics Engineering, Faculty of Engineering, Karpagam Academy of Higher Education, Coimbatore, India.

 

Balachander K
Department of Electrical and Electronics Engineering, Faculty of Engineering, Karpagam Academy of Higher Education, Coimbatore, India.

 

Jayanthi G
Department of Electrical and Electronics Engineering, Mahendra Engineering College, Namakkal, India.

 

Channu Lal
Department of Electrical and Electronics Engineering, Bishop Jerome Institute, Kollam, India.

 

Please see the book here:- https://doi.org/10.9734/bpi/erpra/v4/3941

Practical Realization of Three Phase Buck AC Converter Feeding Three Phase Star Connected RL Load Using FPGA Real Time Controller: Advanced Study | Chapter 1 | Emerging Trends in Engineering Research and Technology Vol. 5

A three phase bidirectional AC to AC buck converter circuit using power MOSFET is designed, rigged up and analyzed with three phase star connected RL load for electrical parameters such as output voltage, input current, input power factor, harmonic profile and efficiency using FPGA real time controller. The various PWM techniques such as ramp-DC symmetrical PWM (RDSPWM), ramptriangular asymmetrical PWM (RTAPWM), sinusoidal asymmetrical PWM type-1 [SAPWM1] and sinusoidal asymmetrical PWM type-2 [SAPWM2] techniques are generated using FPGA real time controller in order to analyze the harmonic profile, input power factor and efficiency of the converter It is required to consider both harmonic profile and input power factor in order to increase the efficiency of power electronic converter. It is observed from experimental results that the RDSPWM technique gives lesser total harmonic distortion [THD] of output voltage and input current than other techniques. It is also observed that the SAPWM1 switching strategy gives high input power factor, more output voltage, high efficiency and moderate improvement of harmonic profile for the entire range of modulation index MI compared to other PWM techniques. Hence SAPWM1 technique is preferred for AC to AC converter than other techniques that renders easy filtration at lower cost. 

Author(s) Details

K. Venkatesha
Department of Electrical and Electronics Engineering, Visvesvaraya Technological University, BNM Institute of Technology, Bengaluru, India

H. A. Vidya
Department of Electrical and Electronics Engineering, Visvesvaraya Technological University, Global Academy of Technology, Bengaluru, India.

View Book :-  http://bp.bookpi.org/index.php/bpi/catalog/book/187