Fuzzy Controlled Multi Carrier Based Voltage Balancing Regulator for Five-Level Diode Clamped Inverter to Mitigate Switching Losses
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2015, Vol 3, Issue 10
Abstract
Multi-level inverters have drawn attention in the recent years when compared to conventional bridge converters to achieve reduced harmonics, high-voltage and high-power capability but switching loses are added on because of increased device count. Many modulation techniques were employed to reduce switching losses. This paper presents design of simple fuzzy controlled neutral point voltage [NP] regulator for five-level DCMLI using a carrier based closed-loop control technique. The regulator principle is based on adding continuous variable offset voltage which rectifies the midpoint potential of the dc bus. Aside from maintaining dc-bus voltage balance the proposed regulator leads to a significant decrement in the voltage ripple at the Neutral node point, results the minimization of the dc-bus capacitance required. It also cutbacks the switching losses of inverter by placing the “no-switching” zone in each and every half cycle of the fundamental voltage wave. The circuit is simulated in Matlab/Simulink the results obtained are compared with that of the three-level DCMLI and it is shown that the effective balancing in line voltage & reduced THD is achieved.
Authors and Affiliations
M. Nagendrababu, K. Suresh
Keywords
Related Articles
- EP ID EP21348
- DOI -
- Views 463
- Downloads 14
Plant Image Retrieval System Using Color & Shape Feature
Image retrieval techniques have not been deployed significantly for plant in Agriculture sector. Agricultural sector of Indian Economy is one of the most significant parts of India. About 75% people are living in rural...
A Review on Digital Image Scrambling Encryption Techniques
Digital image scrambling encryption technology is a way of securing digital image information. With the use of transformation techniques, it can change the original image into a disordered one beyond recognition, making...
Providing Security To Audio With Increased Hiding Capacity Using Cryptography & Steganography
Due to research and new technologies it is possible to store and exchange information in different formats. Secret Information is a very important resource for any organization or individual person. Audio or sound mediu...
Thermal conductivity enhancement of PCMs in annular tube heat storage: A review
This paper reviews previous work on thermal conductivity enhancement of phase change materials (PCMs) filled in cylindrical annulus. Two aspects have been covered under this review: PCM materials, thermal conductivity e...
Direct Torque Control of BLDC Drives for Electrical Vehicle Application
Brushless DC (BLDC) motors are commonly used for several industrial applications because of their small size, high torque and high efficiency . This paper presents a Direct torque Control of brushless DC (BLDC) drive by...