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Capacitor‐voltage‐balancing control for isolated medium‐voltage AC‐DC modular matrix converter
Electronics and Communications in Japan, 2023AbstractThis paper presents a capacitor‐voltage‐balancing control scheme for an isolated medium‐voltage AC‐DC converter using level‐shifted pulse width modulation (PWM) control of a modular matrix converter (MMxC). The proposed isolated AC‐DC converter is composed of the primary MMxC with level‐shifted PWMcontrol, high‐frequency transformer, and ...
Kohei Budo, Takaharu Takeshita
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A Control Method for Voltage Balancing in Modular Multilevel Converters
IEEE Transactions on Power Electronics, 2014The modular multilevel converter (MMC) is attractive for medium- or high-power applications because of the advantages of its high modularity, availability, and high power quality. The voltage balancing of the floating capacitors in the cascaded submodules of the MMC is a key issue. In this paper, a voltage-balancing control method is proposed.
Deng, Fujin; id_orcid 0000-0002-9832-004X +1 more
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Reactive Power Balance and Voltage Control
1997Economic considerations have generally resulted in short-term generation unit commitment practices and trading procedures placing considerable emphasis on scheduling active power to meet system demands. Voltage control is usually managed as a second step in the operation of the power system.
E. Mariani, S. S. Murthy
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Chopper-Controlled Steinmetz Circuit for Voltage Balancing in Railway Substations
IEEE Transactions on Power Electronics, 2013This paper presents a new technique in voltage balancing for single-phase railway substations. Using the concept of chopper-controlled impedance, the authors study the feasibility of an active Steinmetz circuit based on ac choppers. The low power losses in semiconductor devices make the proposed topology an interesting alternative to classical ...
Ladoux P +3 more
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Balanced Voltage Sag Correction Using Dynamic Voltage Restorer Based Fuzzy Polar Controller
Second International Conference on Innovative Computing, Informatio and Control (ICICIC 2007), 2007Many controllers based fuzzy logic have been applied on electric power system. Frequently, time response of the fuzzy controllers is slowly, because the number of membership functions are too many. Many research are proposed to minimize the number of membership function, such as fuzzy polar controller method.
P. Margo +3 more
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Capacitor Voltage Balancing Control for a Modular Matrix Converter
Twenty-First Annual IEEE Applied Power Electronics Conference and Exposition, 2006. APEC '06., 2006This paper describes a simplified capacitor voltage balancing scheme for a modular matrix converter operating in two-level switching mode. The proposed scheme is based on the conventional space vector modulation technique. By using two additional space vectors having opposite direction, the proposed controller is able to regulate all nine capacitor ...
S. Angkititrakul, R.W. Erickson
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Capacitor Voltage Balancing control for 3LNPC LLC Resonant Converter
2019 IEEE Applied Power Electronics Conference and Exposition (APEC), 2019This paper concentrates on the capacitor voltage balancing in three-level neutral-point clamped (3LNPC) LLC resonant converter. Considering that the voltage stress applied to the power switch may exceed the rated voltage when a capacitor voltage imbalance occurs, a new control strategy is proposed to solve this problem.
Yu Qi +6 more
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Optimal voltage balancing control based on phase shift variation
2015 IEEE Energy Conversion Congress and Exposition (ECCE), 2015Natural balancing of the flying capacitor converter is activated when the converter is operating with phase shifted carrier PWM and the carriers are exactly interleaved. The mechanism is stable and has many benefits but the dynamic response can be slow.
Wim van der Merwe +2 more
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Capacitor voltage balancing control of multilevel DC-DC converter
2013 Brazilian Power Electronics Conference, 2013This paper presents an complete investigation of an active capacitor voltage balancing strategy for multilevel dc-dc converter. The proposed technique may be applied to various dc-dc converters, such as the well-known flying-capacitor converter. The voltage balancing analysis is carried out for a five level dc-dc converter, in which the small-signal ...
Levy F. Costa, Samir A. Mussa, Ivo Barbi
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VSG Current Balance Control Strategy Under Unbalanced Grid Voltage
2019 22nd International Conference on Electrical Machines and Systems (ICEMS), 2019In recent years, countries around the world have been vigorously developing new energy and electrifying new energy sources. As a result an increasing number of power electronic devices appear in the grid which makes the power grid develop toward low inertia and low damping.
WU Jian +3 more
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