Analysis of output capacitor voltage ripple of the three-phase transformer-linked boost converter

2015 ◽  
Author(s):  
Wilmar Martinez ◽  
Jun Imaoka ◽  
Masayoshi Yamamoto
Keyword(s):  
Boost Converter ◽  
Voltage Ripple ◽  
Three Phase ◽  
Capacitor Voltage ◽  
Output Capacitor

scholarly journals DC-DC Boost Converter for Battery Charging Application

2019 ◽  
Vol 8 (6) ◽  
pp. 1125-1127 ◽  
Keyword(s):  
Output Voltage ◽  
Supply Voltage ◽  
Load Resistance ◽  
Boost Converter ◽  
Battery Charging ◽  
Output Circuit ◽  
Input And Output ◽  
Capacitor Voltage ◽  
In Series ◽  
Output Capacitor

Boost converter designed to improve output voltage with the use of coupled inductor and capacitor, two switch boost converter is connected in series with parallel to supply voltage. And output of converter is consists of two diodes and two output capacitor with load resistance. Turns ratio is 1:2 in between input and output circuit, capacitor voltage will be improved through the use of coupled inductor

scholarly journals Forward Converter Based Switch Mode Power Supply with Modified Boost Converter as PFC

2019 ◽  
Vol 8 (11) ◽  
pp. 3860-3864 ◽  
Keyword(s):  
Boost Converter ◽  
Switch Mode Power Supply ◽  
Forward Converter ◽  
Voltage Ripple ◽  
Switch Mode ◽  
Capacitor Voltage ◽  
Source Current ◽  
Terminal Voltage ◽  
Step Down ◽  
Power Of Source

This paper deals with two stage SMPS system in which forward converter is used as step down converter and modified boost converter is used to increase the real power share in apparent power of source as well as to reduce the higher frequency currents in source current. To get rid of kilo-hertz currents in load, it is preferred to make the terminal capacitor voltage ripple free with the use of CLCS. Boost converter is adjusted to get rid of high stresses over a switch. The settling time of terminal voltage was adjusted to a fraction of second without affecting the output DC’s smoothness.

scholarly journals Modeling and Mitigation Control of the Submodule-Capacitor Voltage Ripple of a Modular Multilevel Converter under Unbalanced Grid Conditions

Energies ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 651
Author(s):  
Songda Wang ◽  
Danyang Bao ◽  
Gustavo Gontijo ◽  
Sanjay Chaudhary ◽  
Remus Teodorescu
Keyword(s):  
Analytical Description ◽  
Analytical Tool ◽  
Current Profile ◽  
Voltage Ripple ◽  
Three Phase ◽  
Capacitor Voltage ◽  
Powerful Analytical Tool ◽  
Zero Sequence ◽  
The Right ◽  
Unbalanced Grid

A modular multilevel converter’s (MMC’s) submodule (SM)-capacitor voltage will increase under unbalanced grid conditions. Depending on the imbalance level, the voltage ripple can be considerably high, and it can exceed the pre-defined safe limits. If this occurs, the converter will trip, which can lead to serious stability problems for the grid. This paper first proposes an analytical solution for deriving the three-phase imbalanced SM ripple of an MMC under an unbalanced grid. With this analytical tool, the imbalance mechanism of the SM voltage ripple can be easily understood. What is more, the symmetrical component method is first applied to analyze the three-phase SM capacitor ripple, and the positive-/negative-/zero-sequence components of the three-phase SM voltage ripple are easily identified by the proposed analytical method. Then, based on this powerful analytical tool, the proper circulating-current profile to be injected can be obtained, allowing for the right compensation of the voltage ripple. Based on this approach, two new voltage ripple compensation methods are proposed in this paper. Simulations were carried out to validate the analytical description of the submodule-capacitor voltage ripple proposed in this paper. Moreover, simulation and experimental results are provided to validate the new compensation techniques introduced in this paper.

scholarly journals Analysis of Output Capacitor Voltage Ripple in Multi-Phase Transformer-Linked Boost Chopper Circuit

2013 ◽  
Vol 2 (5) ◽  
pp. 252-260 ◽  
Author(s):  
Jun Imaoka ◽  
Masayoshi Yamamoto ◽  
Yuta Nakamura ◽  
Takahiro Kawashima
Keyword(s):  
Voltage Ripple ◽  
Capacitor Voltage ◽  
Output Capacitor ◽  
Multi Phase

scholarly journals Capacitors Voltage Switching Ripple in Three-Phase Three-Level Neutral Point Clamped Inverters with Self-Balancing Carrier-Based Modulation

Energies ◽  
2018 ◽  
Vol 11 (12) ◽  
pp. 3244 ◽  
Author(s):  
Manel Hammami ◽  
Gabriele Rizzoli ◽  
Riccardo Mandrioli ◽  
Gabriele Grandi
Keyword(s):  
Experimental Tests ◽  
Neutral Point ◽  
Grid Connection ◽  
Voltage Ripple ◽  
Three Phase ◽  
Capacitor Voltage ◽  
Sinusoidal Load ◽  
Almost All ◽  
Current Ripple ◽  
Voltage Switching

This paper provides a comprehensive analysis of the capacitors voltage switching ripple for three-phase three-level neutral point clamped (NPC) inverter topologies. The voltage ripple amplitudes of the two dc-link capacitors are theoretically estimated as a function of both amplitude and phase angle of output current and the inverter modulation index. In particular, peak-to-peak distribution and maximum amplitudes of the capacitor voltage switching ripple over the fundamental period are obtained. A comparison is made considering different carrier-based pulse-width modulations in the case of almost all sinusoidal load currents, representing either grid connection or passive load with a negligible current ripple. Based on the voltage switching ripple requirements of capacitors, a simple and effective original equation for a preliminary sizing of the capacitors has been proposed. Numerical simulations and experimental tests have been carried out in order to verify the analytical developments.

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