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Reduced Switching-Frequency Modulation and Circulating Current Suppression for Modular Multilevel Converters
This paper describes a modified phase-shifted carrier-based pulsewidth-modulation (PSC-PWM) scheme for modular multilevel converters (MMC). In order to reduce the average device switching frequency,Expand
Dynamic Modeling and Control of DFIG-Based Wind Turbines Under Unbalanced Network Conditions
  • Lie Xu, Y. Wang
  • Engineering
  • IEEE Transactions on Power Systems
  • 29 January 2007
This paper presents an analysis and control design of a doubly-fed induction generator (DFIG)-based wind generation system operating under unbalanced network conditions. A DFIG system model in theExpand
Reduced switching-frequency modulation and circulating current suppression for modular multilevel converters
Summary form only given. This paper describes a modified phase-shifted carrier-based pulsewidth-modulation (PSC-PWM) scheme for modular multilevel converters (MMC). In order to reduce the averageExpand
Direct active and reactive power control of DFIG for wind energy generation
This paper presents a new direct power control (DPC) strategy for a doubly fed induction generator (DFIG)-based wind energy generation system. The strategy is based on the direct control of statorExpand
Design and Operation of a Hybrid Modular Multilevel Converter
This paper presents a hybrid modular multilevel converter (MMC), which combines full-bridge submodules (FBSM) and half-bridge submodules (HBSM). Compared with the FBSM-based MMC, the proposedExpand
Improved Control of DFIG Systems During Network Unbalance Using PI–R Current Regulators
TLDR
A new control strategy for a doubly fed induction generator (DFIG) under unbalanced network voltage conditions and simultaneous elimination of torque and total active power oscillations has been achieved. Expand
Grid Integration of Large DFIG-Based Wind Farms Using VSC Transmission
This paper describes the use of voltage source converter (VSC)-based HVDC transmission system (VSC transmission) technology for connecting large doubly fed induction generator (DFIG)-based wind farmsExpand
Direct Power Control of DFIG With Constant Switching Frequency and Improved Transient Performance
  • Dawei Zhi, Lie Xu
  • Engineering
  • IEEE Transactions on Energy Conversion
  • 20 February 2007
This paper proposes a new direct power control (DPC) strategy for a doubly fed induction generator (DFIG)-based wind turbine system. The required rotor control voltage, which eliminates active andExpand
Coordinated Control of DFIG's Rotor and Grid Side Converters During Network Unbalance
  • Lie Xu
  • Engineering
  • IEEE Transactions on Power Electronics
  • 2 May 2008
This paper proposes a coordinated control of the rotor side converters (RSCs) and grid side converters (GSCs) of doubly-fed induction generator (DFIG) based wind generation systems under unbalancedExpand
Voltage Balancing and Fluctuation-Suppression Methods of Floating Capacitors in a New Modular Multilevel Converter
TLDR
A voltage-fluctuation-suppression method which can reduce the amplitude of the voltage fluctuation in low-frequency region and improve the start-up performance significantly is proposed. Expand
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