Modeling the Trans Bay Cable Project as Voltage-Sourced Converter with Modular Multilevel Converter design

Teeuwsen, S.P.

doi:10.1109/pes.2011.6038903

Cited by 112 publications

(51 citation statements)

References 3 publications

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“…As depicted in Fig. 7, the HVDC transmission system benchmarked the Trans Bay Cable project [24] designed as a mono-polar structure with DC voltage of ± 200 kV and submodule capacitance of 4.5 mF [25], and number of submodules per arm of 200. The system is designed to transmit 400 MW from MMC 1 to MMC 2.…”

Section: Simulation Resultsmentioning

confidence: 99%

Trade-Off Strategies in Designing Capacitor Voltage Balancing Schemes for Modular Multilevel Converter HVDC

Nam¹,

Kim²,

Kim³

et al. 2016

Journal of Electrical Engineering and Technology

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-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 the voltage regulation performance and system loss. This paper first introduces the state-ofthe-art MMC-HVDC submodule capacitor voltage balancing methods reported in the literatures and discusses the trade-offs in designing these methods for HVDC application. This paper further proposes a submodule capacitor balancing scheme exploiting a control signal to flexibly interchange between the on-state and the off-state submodules. The proposed scheme enables desired performance-based voltage regulation and avoids unnecessary switching transitions among submodules, consequently reducing the switching loss. The flexibility and controllability particularly fit in high-level MMC HVDC applications where the aforementioned design trade-offs become more crucial. Simulation studies for MMC HVDC are performed to demonstrate the validity and effectiveness of the proposed capacitor voltage balancing algorithm.

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Section: Simulation Resultsmentioning

confidence: 99%

Trade-Off Strategies in Designing Capacitor Voltage Balancing Schemes for Modular Multilevel Converter HVDC

Nam¹,

Kim²,

Kim³

et al. 2016

Journal of Electrical Engineering and Technology

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“…9, as reported in the Trans Bay Cable Project [13]. It transfers the real power of 400 MW from converter 1 to converter 2 through the submarine XLPE DC cable with the length of 88 km.…”

Section: Application To Practical Vsc-hvdc Systemmentioning

confidence: 98%

“…In the 'Trans Bay Cable Project' [13], the first practical HVDC has been established with the MMC topology, in which the number of SMs in an arm module is over 200. However, it is difficult to carry out a time-domain simulation for the system as shown in Fig.…”

Section: Arm Modeling For High-level MMC Topologymentioning

confidence: 99%

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Power Loss Modeling of Individual IGBT and Advanced Voltage Balancing Scheme for MMC in VSC-HVDC System

Son

Lee

Park³

2014

Journal of Electrical Engineering and Technology

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-This paper presents the new power dissipation model of individual switching device in a high-level modular multilevel converter (MMC), which can be mostly used in voltage sourced converter (VSC) based high-voltage direct current (HVDC) system and flexible AC transmission system (FACTS). Also, the voltage balancing method based on sorting algorithm is newly proposed to advance the MMC functionalities by effectively adjusting switching variations of the sub-module (SM). The proposed power dissipation model does not fully calculate the average power dissipation for numerous switching devices in an arm module. Instead, it estimates the power dissipation of every switching element based on the inherent operational principle of SM in MMC. In other words, the power dissipation is computed in every single switching event by using the polynomial curve fitting model with minimum computational efforts and high accuracy, which are required to manage the large number of SMs. After estimating the value of power dissipation, the thermal condition of every switching element is considered in the case of external disturbance. Then, the arm modeling for highlevel MMC and its control scheme is implemented with the electromagnetic transient simulation program. Finally, the case study for applying to the MMC based HVDC system is carried out to select the appropriate insulated-gate bipolar transistor (IGBT) module in a steady-state, as well as to estimate the proper thermal condition of every switching element in a transient state.

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“…Modular multilevel converter (MMC) is an innovative multilevel technology that was first used in a high voltage direct current (HVDC) transmission project in 2010 [1]. Compared with conventional multilevel topologies, MMC offers several advantages, including low switching frequency, low harmonic, and favorable redundancy.…”

Section: Introductionmentioning

confidence: 99%

Quasi-Fixed-Frequency Hysteresis Current Tracking Control Strategy for Modular Multilevel Converters

Mashino¹,

Ji²,

Du³

et al. 2014

Journal of Power Electronics

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This study proposes a quasi-fixed-frequency hysteresis current tracking control strategy for modular multilevel converters (MMCs) on the basis of voltage partition principle. First, by monitoring the grid voltage and the deviation between the output and reference currents, the output voltage is determined, thus prompting the output current to quickly and efficiently track the given current. Second, the voltages of the upper/lower capacitor of the arm and the voltages between the upper and lower arms are balanced by combining these arms with virtual loop mapping and arm voltage balance control, respectively. In particular, the proposed method is designed for any level and number of sub-modules. The validity of the proposed method is verified by simulations and experimental results of a five-level MMC prototype.

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Modeling the Trans Bay Cable Project as Voltage-Sourced Converter with Modular Multilevel Converter design

Cited by 112 publications

References 3 publications

Trade-Off Strategies in Designing Capacitor Voltage Balancing Schemes for Modular Multilevel Converter HVDC

Trade-Off Strategies in Designing Capacitor Voltage Balancing Schemes for Modular Multilevel Converter HVDC

Power Loss Modeling of Individual IGBT and Advanced Voltage Balancing Scheme for MMC in VSC-HVDC System

Quasi-Fixed-Frequency Hysteresis Current Tracking Control Strategy for Modular Multilevel Converters

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