Capacitor voltage balancing strategy based on sub-module capacitor voltage estimation for modular multilevel converters
نویسندگان
چکیده
منابع مشابه
Capacitor Voltage Monitoring in Modular Multilevel Converter
A Modular Multilevel Converter (MMC) is an attractive solution for power conversion without transformers. As MMC consists of cascade connections and floating dc capacitors, it requires continuous voltage monitoring. An adaptive observer design has been presented to estimate the capacitor voltages from the measurement of arm currents. This work introduces a capacitance value of the cell capacito...
متن کاملTrade-Off Strategies in Designing Capacitor Voltage Balancing Schemes for Modular Multilevel Converter HVDC
This paper focuses on the engineering trade-offs in designing capacitor voltage balancing schemes for modular multilevel converters (MMC) HVDC: regulation performance and switching loss. MMC is driven by the on/off switch operation of numerous submodules and the key design concern is balancing submodule capacitor voltages minimizing switching transition among submodules because it represents th...
متن کاملInvestigation of Capacitor Voltage Regulation in Modular Multilevel Converters with Staircase Modulation
This paper presents a detailed theoretical analysis and performance assessment of the capacitor voltage balancing strategies for staircase modulated modular multilevel converters (MMC) in terms of the algorithm structures, voltage balancing effect, and switching frequency. A constant-frequency redundancy selection (CFRS) method with minimal switching loss is proposed and the function realizatio...
متن کاملComputationally Efficient Sub-module Selection Scheme for Voltage Balancing Controller of Modular Multilevel Converter
SUMMARY Modular multilevel converter (MMC) type topology is considered an enabling technology for expanding the voltage sourced converter (VSC) applications and thus providing its operational benefits with low switching power loss comparable to that of the conventional thyristor-based line commutated converters. However, due to its inherent topological and consequently control complexity, compu...
متن کاملA Minimum-Energy-Based Capacitor Voltage Balancing Control Strategy For MPC Conversion Systems
In ACIDCIAC power conversion, the connection of a Multi Point Clamped (MPC) rectifier with an MPC inverter simplifies the balancing of the voltages on the series-connected DC link capacitors as well as giving input power-factor correction capability. This is only true provided that an alternative balancing PWM control strategy is adopted instead of the standard PWM one. A control strategy is pr...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: CSEE Journal of Power and Energy Systems
سال: 2016
ISSN: 2096-0042
DOI: 10.17775/cseejpes.2016.00010