Results 11 to 20 of about 262 (174)

Space‐vector current control of cascaded half‐bridge three‐phase three‐wire voltage source inverter

open access: yesIET Power Electronics, 2021
Current controllers for voltage source inverters give better control of current waveform and also provide compensation for load transients and non‐linearities.
Muhyaddin Rawa   +4 more
doaj   +1 more source

Model‐based control of four‐leg inverter for UPS applications considering the effect of neutral line inductor

open access: yesIET Power Electronics, 2021
A control approach for three‐phase four‐leg LC‐filtered voltage source inverters (VSIs) is proposed for an uninterruptible power supply (UPS) application.
S. Sajjad Seyedalipour   +3 more
doaj   +1 more source

Interaction between damping characteristics and the initial‐stage short‐circuit current of MMC‐HVDC transmission systems

open access: yesIET Power Electronics, 2021
This paper studies the interaction between the damping characteristics and the initial‐stage short‐circuit current of modular multilevel converter based high voltage direct current (MMC‐HVDC) transmission system.
Boyu Qin   +5 more
doaj   +1 more source

Equal weighted cost function based weighting factor tuning method for model predictive control in power converters

open access: yesIET Power Electronics, 2022
An equal‐weighted cost function‐based weighting factor tuning method for model predictive control (MPC) in power converters is presented here. In conventional MPC methods developed for power converters, the use of weighting factors is a necessity to ...
Naki Guler   +2 more
doaj   +1 more source

A steady‐state analysis method for pole‐to‐pole faults under different transition resistances in voltage source converter‐based DC systems

open access: yesIET Generation, Transmission & Distribution, 2021
Fault analysis is an essential prerequisite for fault detection, location and isolation. A detailed fault analysis method on the steady state of the pole‐to‐pole fault for voltage source converter (VSC) based DC systems is presented in this paper ...
Zhengguang Xiao   +4 more
doaj   +1 more source

A hybrid level shifted carrier‐based PWM technique for modular multilevel converters

open access: yesIET Power Electronics, 2021
This paper presents a hybrid level shifted carrier‐based pulse width modulation (HLSC‐PWM) technique for modular multilevel converters (MMCs). The concept of the proposed HLSC‐PWM method is developed by combining the principles of phase disposition PWM ...
Aswini Kumar M   +3 more
doaj   +1 more source

Fault current limiting method based on virtual impedance for hybrid high‐voltage direct current with cascaded MMC inverters

open access: yesElectronics Letters, 2021
The hybrid high‐voltage direct current (HVDC) with cascaded multi‐infeed MMC inverters is proposed in recent years, and it will be put into reality in near future.
Qin Jiang   +3 more
doaj   +1 more source

Directional element for faulty feeder identification of high‐resistance fault in high‐surety power supply systems

open access: yesIET Generation, Transmission & Distribution, 2021
The high‐surety power supply systems are gaining great attention to enhance the reliability of uninterruptable power supplies. A high‐resistance fault along a high‐surety power supply feeder results in a low fault current, making the conventional high ...
Roja Rouhani   +2 more
doaj   +1 more source

An accurate analysis method for transient characteristics of DC line faults in voltage source converter‐based DC systems

open access: yesIET Generation, Transmission & Distribution, 2021
Voltage source converter‐based DC systems face severe overcurrent problem under DC line faults, which causes significant influence on security, reliability and stability of the power system. As the theoretical basis for relay coordination and protection,
Zhengguang Xiao   +6 more
doaj   +1 more source

An improved capacitor voltage full feedforward control strategy for LCL‐type grid‐connected inverter based on control delay compensation

open access: yesIET Power Electronics, 2021
For the LCL‐type grid‐connected inverter, when the capacitor voltage feedforward is applied, the delay in the digital control system could change the phase characteristics of capacitor voltage feedback and affect the stability of the system. To solve the
Xingwu Yang   +6 more
doaj   +1 more source

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