Improved virtual synchronous control for grid-connected VSCs under grid voltage unbalanced conditions
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Modern Power Systems and Clean Energy"
DOI: 10.1007/s40565-018-0388-2
Abstract: This paper presents an improved virtual synchronous control (VSynC) for the grid-connected voltage source converter (VSC) so as to continuously operate under the grid voltage with steady unbalance. The improved VSynC introduces the negative sequence… read more here.
Keywords: grid voltage; virtual synchronous; control; voltage ... See more keywords
Simple current control without grid voltage sensor for traction solid-state transformer
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Power Electronics"
DOI: 10.1007/s43236-020-00214-4
Abstract: This paper proposes a simple current control method without a grid voltage sensor for a rectifier of traction solid-state transformer. The proposed control scheme estimates the phase angle of grid voltage from the fundamental frequency… read more here.
Keywords: grid voltage; without grid; control; method ... See more keywords
Improved sinusoid-locked loop equipped with a virtual stator impedance to estimate the grid voltage parameters
Sign Up to like & getrecommendations! Published in 2019 at "Electric Power Systems Research"
DOI: 10.1016/j.epsr.2019.04.013
Abstract: Abstract Grid voltage parameters, including the amplitude, frequency and phase angle, are the essential information for the control and protection of power systems. The sinusoid-locked loop (SLL) is a novel approach to estimate the grid… read more here.
Keywords: grid voltage; sinusoid locked; locked loop; voltage ... See more keywords
Grid voltage regulation using a reset PI+CI controller for Energy storage systems
Sign Up to like & getrecommendations! Published in 2018 at "IFAC-PapersOnLine"
DOI: 10.1016/j.ifacol.2018.06.070
Abstract: Abstract Hybrid controllers are capable of improved performance over their linear counterparts. In particular, reset controllers like the PI+CI are capable of fast flat response for lag dominant plants. Grid connected power converters especially interfacing… read more here.
Keywords: storage; storage systems; energy storage; grid voltage ... See more keywords
Effects on oscillation mechanism and design of grid‐voltage feedforward in grid‐tied converter under weak grid
Sign Up to like & getrecommendations! Published in 2019 at "IET Power Electronics"
DOI: 10.1049/iet-pel.2018.5232
Abstract: Grid-voltage feedforward control is widely used in grid-tied converters. The reported studies show that the grid-voltage feedforward may reduce the system stability margin, and may lead to oscillation problem in renewable power generation system. This… read more here.
Keywords: grid voltage; system; voltage; voltage feedforward ... See more keywords
Grid Voltage Sensorless Model-Based Predictive Power Control of PWM Rectifiers Based on Sliding Mode Virtual Flux Observer
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Access"
DOI: 10.1109/access.2019.2898687
Abstract: In this paper, a grid voltage sensorless model predictive control is proposed based on a sliding mode virtual flux observer (SMVFO). The proposed SMVFO shows good inherent filtering capacity, and thus there is no high-frequency… read more here.
Keywords: grid voltage; virtual flux; control; voltage ... See more keywords
Coordinate Transformation-Free Observer-Based Adaptive Estimation of Distorted Single-Phase Grid Voltage Signal
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Access"
DOI: 10.1109/access.2020.2988711
Abstract: This paper studies the phase and frequency estimation problem of single-phase grid voltage signal in the presence of DC offset and harmonics. For this purpose, a novel parameterized linear model of the grid voltage signal… read more here.
Keywords: grid voltage; coordinate transformation; voltage signal; single phase ... See more keywords
Model Predictive Current Control for Fault-Tolerant Bidirectional Voltage Source Converter With Open Circuit Fault and Unbalanced Grid Voltage
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Access"
DOI: 10.1109/access.2020.3018144
Abstract: To improve the fault-tolerant operation capability of bidirectional voltage source converter (BVSC), an improved model predictive current control (IMPCC) for fault-tolerant BVSC, is proposed with balanced DC-link capacitor voltage under unbalanced grid voltage. The proposed… read more here.
Keywords: grid voltage; fault tolerant; voltage; unbalanced grid ... See more keywords
A Grid-Voltage-Sensorless Resistive-Active Power Filter With Series LC-Filter
Sign Up to like & getrecommendations! Published in 2018 at "IEEE Transactions on Power Electronics"
DOI: 10.1109/ecce.2017.8096551
Abstract: Voltage-sensorless control has been investigated for voltage source inverters (VSIs) for many years due to the reduced system cost and potentially improved system reliability. The VSI-based resistive-active power filters (R-APFs) are now widely used to… read more here.
Keywords: voltage; voltage sensorless; control; power ... See more keywords
Deadbeat Control Based on Current Predictive Calibration for Grid-Connected Converter Under Unbalanced Grid Voltage
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Transactions on Industrial Electronics"
DOI: 10.1109/tie.2017.2674620
Abstract: Deadbeat control (DBC) is developed based on the system model, which is commonly used to achieve good control performance for a three-phase grid connected converter (GCC). Unbalanced grid voltage is a common phenomenon in power… read more here.
Keywords: cpc dbc; control; unbalanced grid; grid voltage ... See more keywords
Advanced Control of Grid-Connected Current Source Converter Under Unbalanced Grid Voltage Conditions
Sign Up to like & getrecommendations! Published in 2018 at "IEEE Transactions on Industrial Electronics"
DOI: 10.1109/tie.2018.2835367
Abstract: There are technical challenges when the grid-connected current source converter operates under unbalanced grid voltage conditions. The negative sequence component of the unbalanced grid voltage would result in the low-frequency ripple at dc side, as… read more here.
Keywords: unbalanced grid; connected current; control; grid connected ... See more keywords