A new control method of a resonant switched-capacitor converter and the application for balancing of the split DC voltages in a multilevel inverter

2009 ◽  
Vol 168 (2) ◽  
pp. 69-79 ◽  
Author(s):  
Kenichiro Sano ◽  
Hideaki Fujita
Keyword(s):  
Control Method ◽  
Multilevel Inverter ◽  
Switched Capacitor ◽  
Switched Capacitor Converter

scholarly journals Analytical Modelling and Verification of Bus-Clamping Modulation Technique for Switched-Capacitor Converter

2017 ◽  
Vol 2017 ◽  
pp. 1-10
Author(s):  
Amarnath Yalavarthi ◽  
Akbar Ahmad
Keyword(s):  
Pulse Width Modulation ◽  
Harmonic Distortion ◽  
Closed Form Solution ◽  
Fourier Integral ◽  
Form Solution ◽  
Multilevel Inverter ◽  
Switched Capacitor ◽  
Space Vector ◽  
Modulation Technique ◽  
Switched Capacitor Converter

Space vector modulation techniques have advantages of high output voltages and reduced harmonic content as they utilize the dc bus effectively. Bus-clamped pulse width modulation classified in space vector techniques has the ability to reduce the switching losses of the converter and has reduced harmonic distortion. This paper provides mathematical analysis for 60-degree bus-clamping strategy to obtain the complete closed-form solution for finding the harmonic coefficients using double Fourier integral expression. The effectiveness of the bus-clamped approach on switched capacitor based multilevel inverter has been shown with comparison to Sinusoidal PWM. The DSP controller TMS320F240 has been chosen for the real-time implementation of 60-degree bus-clamping modulation technique. Simulation and experimental results of the prototype are presented for RL load at different modulation indices showing the superiority of the configuration to cascaded multilevel inverter.

scholarly journals Experimental Implementation of a Low-Cost Single Phase Five-Level Inverter for Autonomous PV System Applications Without Batteries

2018 ◽  
Vol 8 (1) ◽  
pp. 2452-2458 ◽  
Author(s):  
A. Nouaiti ◽  
A. Saad ◽  
A. Mesbahi ◽  
M. Khafallah
Keyword(s):  
Single Phase ◽  
Control Method ◽  
Low Cost ◽  
Multilevel Inverter ◽  
Photovoltaic System ◽  
Solar Panels ◽  
Pv System ◽  
Point Tracking ◽  
Switched Capacitor Converter ◽  
Storage Batteries

This paper presents the design and the implementation of a low-cost single phase five-level inverter for photovoltaic applications. The proposed multilevel inverter is composed of a simple boost converter, a switched-capacitor converter, and an H-bridge converter. An efficient control method which associates a closed-loop regulation method with a simple maximum power point tracking (MPPT) method is applied in order to allow the proposed multilevel inverter to transfer power energy from solar panels to autonomous load with no storage batteries. An experimental prototype of this inverter is fabricated at the laboratory and tested with a digital control system. Obtained results confirm the simplicity and the performance of the proposed photovoltaic system.

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