A Novel Control Strategies for Improving the Performance of Reduced Switch Multilevel Inverter

Author(s):  
K. Venkataramanan ◽  
B. Shanthi ◽  
T. S. Sivakumaran
Electronics ◽  
2019 ◽  
Vol 8 (10) ◽  
pp. 1092 ◽  
Author(s):  
Sunddararaj ◽  
Rangarajan ◽  
Gopalan

The utilization of plug-in electric vehicles (PEV) has started to garner more attention worldwide considering the environmental and economic benefits. This has led to the invention of new technologies and motifs associated with batteries, bidirectional converters and inverters for Electric Vehicle applications. In this paper, a novel design and control of chopper circuit is proposed and configured with the series and parallel connection of the power electronic based switches for two-way operation of the converter. The bidirectional action of the proposed converter makes it suitable for plug-in electric vehicle applications as the grid is becoming smarter. The DC–DC converter is further interfaced with the designed multilevel inverter (MLI). The reduced switches associated with the novel design of MLI have overcome the cons associated with the conventional inverters in terms of enhanced performance in the proposed design. Further, novel control strategies have been proposed for the DC–DC converter based on Proportional Integral (PI) and Fuzzy based control logic. For the first time, the performance of the entire system is evaluated based on the comparison of proposed PI, fuzzy, and hybrid controllers. New rules have been formulated for the Fuzzy based controllers that are associated with the Converter design. This has further facilitated the interface of bidirectional DC–DC converter with the proposed MLI for an enhanced output voltage. The results indicate that the proposed hybrid controller provides better performance in terms of voltage gain, ripple, efficiency and overall aspects of power quality that forms the crux for PEV applications. The novelty of the design and control of the overall topology has been manifested based on simulation using MATLAB/SIMULINK.


Author(s):  
P. Muthukumar ◽  
Venkata Ramesh Maddukuri ◽  
K. Eswaramoorthy ◽  
N. Veeramuthulingam ◽  
T. Jarin

Author(s):  
Venkata Ramesh Maddukuri ◽  
N. Veeramuthulingam ◽  
T. Jarin ◽  
K. Eswaramoorthy ◽  
P. Muthukumar

Author(s):  
Polu Veera Pratap ◽  
S. Sridhar

Multilevel inverters have been widely used for high-voltage and high-power applications. Their perf0rmance is greatly superi0r t0 that 0f c0nventi0nal tw0-level inverters due t0 their reduced t0tal harm0nic dist0rti0n (THD),. This t0p0l0gy requires fewer c0mp0nents when c0mpared t0 di0de clamped, flying capacit0r and Bridgeless cascaded inverters and it requires fewer carrier signals and gate drives. Theref0re, the 0verall c0st and circuit c0mplexity are greatly reduced. This paper presents a n0vel reference and multicarrier based PWM scheme It als0 c0mpares the perf0rmance 0f the pr0p0sed scheme with that 0f c0nventi0nal cascaded bridge less rectifier (CBR) multilevel inverters. finally Simulati0n results fr0m MATLAB/SIMULINK are presented t0 verify the perf0rmance 0f the Five-level Multilevel Inverter


Author(s):  
Farouk Hadj Benali ◽  
Fouad Azzouz ◽  
Ghalem Bachir

In this paper the operating improvement of the supply source and the optimization of PWM control are proposed. A comparison (based on the better operating in terms of input voltage) between the multilevel inverters (NPC multilevel inverter and H bridge inverter) is studied. Then two control strategies (the SPWM and the suboptimal PWM) are applied to the multilevel inverter which has the better voltage performance. At last a comparison between these two control techniques based on two essential points, the THD and the output voltage value. A comparison between our results and results taken from literature is also presented in this paper. Simulations are carried out using PSIM environment.


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