Results 21 to 30 of about 828 (220)

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

An improved hysteresis current control scheme during grid voltage zero‐crossing for grid‐connected three‐level inverters

open access: yesIET Power Electronics, 2021
For three‐level inverters, hysteresis current control (HCC) has been widely used in applications such as active power filters due to its fast‐dynamic response, and it does not need to control each frequency separately with multiple controllers, which ...
Haifeng Wang   +3 more
doaj   +1 more source

An enhanced full‐feedforward strategy to mitigate output current harmonics in grid‐tied inverters

open access: yesIET Generation, Transmission & Distribution, 2021
The grid‐tied inverters are the most vital components in renewable energy‐based power systems. Hence, maintaining the power quality of a grid‐tied inverter output within the standard range is an ongoing challenge in the power system.
Kiarash Gharani Khajeh   +3 more
doaj   +1 more source

A strategy for suppressing the torque ripple in three‐phase four‐switch inverter‐fed PMSM drives

open access: yesThe Journal of Engineering, 2021
This paper proposes a strategy to suppress the torque ripple based on three‐phase four‐switch (TPFS) inverter for the permanent magnet synchronous motor (PMSM) drives system to ensure safe and reliable operation in case of single‐phase open circuit of ...
Wenjing Fang   +3 more
doaj   +1 more source

An effective fault management scheme and comprehensive double line‐frequency ripple propagation analysis for MVDC networks

open access: yesIET Generation, Transmission & Distribution, 2021
This paper proposes an effective fault management scheme for medium‐voltage direct current (MVDC) networks, which includes a virtual‐impedance‐based fault current limiter (VI‐FCL) on the DC side and a positive‐negative‐sequence (PNS) control scheme on ...
Dongsen Sun   +3 more
doaj   +1 more source

Grid input current feedback active damping control method for IPMSM drives with small DC‐link capacitor

open access: yesIET Power Electronics, 2021
With large input line inductance and low dc‐link capacitance, the small dc‐link drive system shows an instability problem, which is mainly caused by LC resonance between the line side inductor and the dc‐link film capacitor.
Quan Yin   +5 more
doaj   +1 more source

Bidirectional multi‐resonant converter with a wide voltage range

open access: yesIET Power Electronics, 2021
A bidirectional multi‐resonant DC/DC converter is proposed in this study. The structure of the converter is symmetrical, and the operating characteristics of the bidirectional operation mode are the same.
Qinglin Zhao   +4 more
doaj   +1 more source

A flux estimation method for three‐phase dual‐active‐bridge DC/DC converters

open access: yesIET Power Electronics, 2021
This study proposes an estimation method of flux density in high‐frequency transformers of three‐phase dual‐active‐bridge transformers. The steady‐state analysis shows that the flux in the converter is different in Buck and Boost modes and depending on ...
Duy‐Dinh Nguyen   +4 more
doaj   +1 more source

Maximum power point tracking control for mechanical rectification wave energy converter

open access: yesIET Renewable Power Generation, 2021
As a clean and renewable energy, wave energy has abundant reserves, and its reasonable development and utilization can effectively alleviate the problems of energy shortage and environmental pollution.
Jianan Xu   +3 more
doaj   +1 more source

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