Results 211 to 220 of about 1,944 (265)

Boost Modular Multilevel Converter’s Capacitor Voltage Balancing without voltage sensors

2020 IEEE International Conference on Power Electronics, Smart Grid and Renewable Energy (PESGRE2020), 2020
In this paper a cross connected half ridge sub-module (XCHB-SM) based modular multilevel converter (MMC) is presented. It is capable to block DC side fault which is not possible with normal HB-SM based MMC. MMC is also prominent for its superior Capacitor Voltage Balancing (CVB).
Bikram Das, Aniruddha Bhattacharya, Debashis Chatterjee   +2 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

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 Control for Flying-Capacitor MMC without Current Sensors

2020 IEEE 9th International Power Electronics and Motion Control Conference (IPEMC2020-ECCE Asia), 2020
This paper proposes a submodule (SM) capacitor voltage balancing control scheme for the flying-capacitor modular multilevel converter (FC-MMC), where current sensors are not used. From the SM capacitor voltages and the half-arm insertion index, the DC and AC circulating currents are estimated, instead of measurement.
Duc Dung Le, Dong-Choon Lee, Eui-Cheol Nho   +2 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

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 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

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 Balancing in Multi-Level Voltage Reinjection (MLVR) Converters

IEEE Transactions on Power Delivery, 2005
In common with conventional multi-level conversion configurations, the multi-level voltage reinjection scheme uses multi-level clamping and dc series connected capacitors. The operation conditions that lead to capacitor voltage unbalance are analyzed and the use of adaptive adjustment of the clamping switches conducting periods is investigated.
Y.H. Liu, J. Arrillaga, N.R. Watson
openaire   +1 more source

A generalized capacitor voltage balancing scheme for flying capacitor multilevel converters

2010 Twenty-Fifth Annual IEEE Applied Power Electronics Conference and Exposition (APEC), 2010
Multilevel power electronic converters are the converter of choice in medium-voltage applications due to their reduced switch voltage stress, better harmonic performance, and lower switching losses. Although it has received little attention, the flying-capacitor multilevel converter has a distinct advantage in terms of its ease of capacitor voltage ...
Mostafa Khazraei, Hossein Sepahvand, Keith Corzine, Mehdi Ferdowsi   +3 more
openaire   +1 more source