Results 211 to 220 of about 2,077 (260)

Simple direct capacitor voltage balancing of a flying capacitor converter

2005 European Conference on Power Electronics and Applications, 2005
This paper proposes a new charge control method for voltage balancing of flying capacitor multilevel converters. Only the signs of the deviations from the nominal capacitor voltages and the sign of the output current are needed to choose proper switching states for charging or discharging the ...
Clos, G., Schindele, L., Franke, T., Gartner, S.   +3 more
openaire   +1 more source

Capacitor Voltage Balancing Schemes in Flying Capacitor Multilevel Inverters

2007 IEEE Power Electronics Specialists Conference, 2007
This paper focuses on the development of capacitor voltage balancing methods in a flying capacitor multilevel inverter (FCMLI). Three such strategies have been described and have been applied to a five-level CMLI. The sinusoidal pulse width modulation technique has been used while making the proposals.
Anshuman Shukla, Arindam Ghosh, Avinash Joshi   +2 more
openaire   +1 more source

Investigation of capacitor voltage balancing in practical implementations of flying capacitor multilevel converters

2017 IEEE 18th Workshop on Control and Modeling for Power Electronics (COMPEL), 2017
Capacitor voltage natural balancing is an attractive feature of flying capacitor multilevel (FCML) converters. However, with the commonly used phase-shifted pulse-width modulation (PSPWM), the capacitor voltages still can deviate, and active balancing is often required.
Zichao Ye, Yutian Lei, Zitao Liao, Robert Carl Nikolai Pilawa-Podgurski   +3 more
openaire   +1 more source

Natural capacitor voltage balancing for a flying capacitor converter induction motor drive

2008 IEEE Power Electronics Specialists Conference, 2008
This paper presents an analysis of the natural voltage balancing dynamics of a three phase flying capacitor converter when supplying an induction motor. The approach substitutes Double Fourier harmonic series for the PWM switching waveforms and the frequency response of the motor, to create a linear state space model of this type of load.
Brendan Peter McGrath, Donald Grahame Holmes   +1 more
openaire   +1 more source

Capacitor voltage balancing method for modular multilevel converter with flying capacitor submodules

2017 IEEE International Conference on Industrial Technology (ICIT), 2017
The modular multilevel converter (MMC) is most widely acclaimed converter topology for high-voltage, high-power applications. Several multilevel submodules have been proposed to replace the conventional two-level submodules for MMC, allowing the reduction in the foot-print size of the converter for the same number of output voltage levels.
Ricardo Lizana, Marcelo A. Pérez, Apparao Dekka, Bin Wu 0007   +3 more
openaire   +1 more source

A Sort Method of Balancing Capacitor Voltage of MMC

2019 18th International Symposium on Distributed Computing and Applications for Business Engineering and Science (DCABES), 2019
The sub-module voltage sharing of modular multi-level converters is beneficial to reducing switching losses and eliminating DC side circulations, which has attracted the attention of experts and scholars at home and abroad. Based on the quick selection sorting algorithm, this paper studies the grouping sorting of Modular Multilevel Converter (MMC ...
Li-Ping Qu, Zhao Lu, Chong-Jie Liu, Chang-Long He   +3 more
openaire   +1 more source

Capacitor voltage balancing in modular multilevel converters

6th IET International Conference on Power Electronics, Machines and Drives (PEMD 2012), 2012
A universal capacitor voltage control method for converters built from series connected modules is presented. It fully exploits both the circulating currents and the common-mode voltage without affecting the phase current control. The controllability of the capacitor voltages in various such converters is investigated.
A.J. Korn, M. Winkelnkemper, P. Steimer, J.W. Kolar   +3 more
openaire   +1 more source

Significance of Capacitor Voltage Balancing in Multilevel Inverter

2019 IEEE International Conference on Innovations in Communication, Computing and Instrumentation (ICCI), 2019
In the recent trends, the use of multilevel inverter is rapidly increasing due to its good performance compared to conventional inverter. In this paper, the performance of Nested Neutral Point Clamped Multilevel inverter (NNPC) is presented. NNPC is a Hybrid type of Multilevel inerter which is nothing but the combination of two classical topologies ...
Preeti Kushawaha, Vinod J. Rupapara, Parth M. Shah   +2 more
openaire   +1 more source

Capacitor voltage balancing in modular multilevel inverters

2014 International Electrical Engineering Congress (iEECON), 2014
This paper presents implementation of an universal modulation scheme on an proposed modular multilevel inverter for achieving charge balancing of the capacitors. Modulation is done by using sinusoidal pulse width modulation. Simulations are provided to prove the conclusion of the scheme.
Vivek Kumar Sharma, Mukesh Kumar, Ankit Gupta, Gaurav Gupta   +3 more
openaire   +1 more source

Capacitor Voltage Balance on NPC Multilevel Converter

2019 International Aegean Conference on Electrical Machines and Power Electronics (ACEMP) & 2019 International Conference on Optimization of Electrical and Electronic Equipment (OPTIM), 2019
In this paper, a modulation strategy is formulated to be integrated in the model of a 5-level AC-DC converter. The resulting formulation is able to deals with the unbalance voltage problem generated in the dc-link. Such modulation strategy can be calculated offline and the solution can be stored as a multidimensional array for its use during the online
Juan Diego Nieto Cardona, Fabio Gomez-Estern Aguilar, Francisco Gordillo   +2 more
openaire   +1 more source