Fault Detection and Localization for Cascaded H-Bridge Multilevel Converter With Model Predictive Control

Chai, Merlin; Gorla, Naga Brahmendra Yadav; Panda, Sanjib Kumar

doi:10.1109/tpel.2020.2978670

Cited by 73 publications

(5 citation statements)

References 45 publications

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“…In [32], a set of faulty SM detection method is proposed for the full-bridge SM-based cascaded H-bridge inverter, which is very similar to the MMC. The method also contains two steps, i.e., fault detection and faulty SM detection.…”

Section: A Diagnosis Of Oc Switching Faultmentioning

confidence: 99%

On-line fault diagnosis and fault-tolerant operation of modular multilevel converters — A comprehensive review

Yang

Wang

2020

Trans. Electr. Mach. Syst.

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Section: A Diagnosis Of Oc Switching Faultmentioning

confidence: 99%

On-line fault diagnosis and fault-tolerant operation of modular multilevel converters — A comprehensive review

Yang

Wang

2020

Trans. Electr. Mach. Syst.

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“…This modular approach allows MLCIs can easily increase output power and voltage levels by adding more inverter modules. In addition, the modular MLCI can easily implement a fault tolerant operation when a single or multiple modules are under faulty conditions [13,14]. This is a significant advantage of the modular MLCI structure, and a lot of research has been conducted on this issue.…”

Section: Introductionmentioning

confidence: 99%

Neutral Voltage Modulation for Maximizing the Linear Modulation Region and Limp-Home Mode Operation of Multilevel Cascaded Inverters Under DC-Link Imbalance Conditions

Kim

Cho

2022

IEEE Access

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This paper proposes an improved neutral voltage modulation (NVM) method for symmetrical and asymmetrical three-phase multilevel cascaded inverters (MLCIs). The maximum synthesizable space vector region is analyzed using the number of healthy inverter modules and the amplitudes of the dc-link voltages in each phase. After that, the NVM strategy is proposed to maximize the balanced three-phase output voltages in the given space vector region. The proposed method matches the polarities of the neutral and the phase voltage references as well as minimizing the neutral voltage. By using the proposed method, the linear modulation region of the three-phase MLCI are fully utilized allowing no overmodulations even under severe dc-link voltage imbalances. Moreover, the proposed NVM can synthesizes rotating voltage vectors even all modules of one phase are not available. To verify the effectiveness of the proposed method, a two-by-three MLCI prototype is built and tested. The experimental results show that the proposed method reduces the total harmonic distortion (THD) and the ripple component of the phase current by 28% and 32.8%, respectively, compared to traditional modulation strategies under severe dc-link imbalance conditions.

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“…The popularity of MPC is due to its advantages, such as fast tracking of setpoint during system transients, capability of handling multiple variables within a single cost function, and easy implementation, especially with the discrete nature of the switches, where the output is directly applied to the converter switches [11]. Also, MPC provides superior performance in the steady-state compared to the conventional dual-loop based PI regulator [12].…”

Section: Introductionmentioning

confidence: 99%

Integration of PV system with SMES based on model predictive control for utility grid reliability improvement

Bakeer

Salama

Vokony

2021

Prot Control Mod Power Syst

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This paper describes the integration of a photovoltaic (PV) renewable energy source with a superconducting magnetic energy storage (SMES) system. The integrated system can improve the voltage stability of the utility grid and achieve power leveling. The control schemes employ model predictive control (MPC), which has gained significant attention in recent years because of its advantages such as fast response and simple implementation. The PV system provides maximum power at various irradiation levels using the incremental conductance technique (INC). The interfaced grid side converter of the SMES can control the grid voltage by regulating its injected reactive power to the grid, while the charge and discharge operation of the SMES coil can be managed by the system operator to inject/absorb active power to/from the grid to achieve the power leveling strategy. Simulation results based on MATLAB/Simulink® software prove the fast response of the system control objectives in tracking the setpoints at different loading scenarios and PV irradiance levels, while the SMES injects/absorbs active and reactive power to/from the grid during various events to improve the voltage response and achieve power leveling strategy.

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Fault Detection and Localization for Cascaded H-Bridge Multilevel Converter With Model Predictive Control

Cited by 73 publications

References 45 publications

On-line fault diagnosis and fault-tolerant operation of modular multilevel converters — A comprehensive review

On-line fault diagnosis and fault-tolerant operation of modular multilevel converters — A comprehensive review

Neutral Voltage Modulation for Maximizing the Linear Modulation Region and Limp-Home Mode Operation of Multilevel Cascaded Inverters Under DC-Link Imbalance Conditions

Integration of PV system with SMES based on model predictive control for utility grid reliability improvement

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