Jinghang Lu
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Low carbon optimization for wind integrated power systems with carbon capture and energy storage under carbon pricing Open
The integration of wind power is vital for enabling a low-carbon energy transition and fostering a sustainable society. However, its intermittent nature and the power system's limited transmission capacity challenge system stability. This …
View article: Multi-timescale stochastic optimization for enhanced dispatching and operational efficiency of electric vehicle photovoltaic charging stations
Multi-timescale stochastic optimization for enhanced dispatching and operational efficiency of electric vehicle photovoltaic charging stations Open
Addressing the integration of global day-ahead dispatching and the necessity for real-time dispatch precision, this study proposes a novel multi-timescale stochastic dispatch strategy for photovoltaic (PV) charging stations equipped with e…
Day-ahead economic dispatch of wind-integrated microgrids using coordinated energy storage and hybrid demand response strategies Open
This study proposes an optimized day-ahead economic dispatch framework for wind-integrated microgrids, combining energy storage systems with a hybrid demand response (DR) strategy to address real-time grid pricing dynamics. The model evalu…
View article: Flexible power control strategy for elliptical trajectory based dynamic voltage restorer during voltage sags
Flexible power control strategy for elliptical trajectory based dynamic voltage restorer during voltage sags Open
Dynamic voltage restorer (DVR) plays an essential role in achieving high‐quality voltage restoration in the distribution system. This paper presents an elliptical‐trajectory‐based approach to guarantee continuous power delivery by consider…
View article: Mitigation of voltage sag for DVR to comply with voltage security protocol via elliptical trajectory compensation
Mitigation of voltage sag for DVR to comply with voltage security protocol via elliptical trajectory compensation Open
In this paper, a flexible power dispatch strategy based on the elliptical trajectory is proposed to maximize the operating region for dynamic voltage restorer (DVR) during voltage sags. This control scheme introduces two individual paramet…
View article: Identification Design for Dynamic Voltage Restorer to Mitigate Voltage Sag Based on the Elliptical Transformation
Identification Design for Dynamic Voltage Restorer to Mitigate Voltage Sag Based on the Elliptical Transformation Open
In this paper, a new identification tool for dynamic voltage restorer (DVR) is proposed to achieve flexible active and reactive power dispatch during voltage sags. The presented tool entirely relies on the theoretical analysis of the ellip…
View article: A Reduced-Order Generalized Proportional Integral Observer-Based Resonant Super-Twisting Sliding Mode Control for Grid-Connected Power Converters
A Reduced-Order Generalized Proportional Integral Observer-Based Resonant Super-Twisting Sliding Mode Control for Grid-Connected Power Converters Open
This article presents a reduced-order generalized proportional-integral observer based resonant super-twisting sliding mode controller (RST-SMC) for the three-phase ac-dc converters. On the contrary to utilizing the proportional-integral c…
View article: Coupling-Related Instability Mechanism and Mitigation Analysis of the Instantaneous Power Based Current Controlled Inverter
Coupling-Related Instability Mechanism and Mitigation Analysis of the Instantaneous Power Based Current Controlled Inverter Open
Instabilities related to sequence-couplings of current controlled inverters (CCIs) have been recognized recently, but limited to accurate stability analysis of CCIs synchronized to the grid by the phase-locked loop (PLL). As for CCIs, anot…
View article: Improvement of Frequency Regulation in VSG-Based AC Microgrid Via Adaptive Virtual Inertia
Improvement of Frequency Regulation in VSG-Based AC Microgrid Via Adaptive Virtual Inertia Open
A virtual synchronous generator (VSG) control based on adaptive virtual inertia is proposed to improve dynamic frequency regulation of microgrid. When the system frequency deviates from the nominal steady-state value, the adaptive inertia …
View article: An Effective Solution for Regeneration Protection in Uninterruptible Power Supply
An Effective Solution for Regeneration Protection in Uninterruptible Power Supply Open
In this paper, a regeneration protection solution is proposed to address the dc-link overvoltage issue and the unequal power sharing in the parallel uninterruptible power supply (UPS) systems. First, a dc-link voltage protection control st…
View article: A Self-Synchronized Decentralized Control for Series-Connected H-Bridge Rectifiers
A Self-Synchronized Decentralized Control for Series-Connected H-Bridge Rectifiers Open
This study proposes a decentralized coordination control scheme for series-connected H-bridge rectifiers. Each rectifier module is controlled as a voltage-controlled source by a local controller, which needs only individual information. Th…
View article: A Novel Grid-Connected Harmonic Current Suppression Control for Autonomous Current Sharing Controller-Based AC Microgrids
A Novel Grid-Connected Harmonic Current Suppression Control for Autonomous Current Sharing Controller-Based AC Microgrids Open
Since the power quality of feed-in grid current in a grid-connected microgrid (GCMG) can be influenced by a distorted utility grid, a novel feed-in grid harmonic current suppression control strategy is proposed in this paper. A feed-in gri…
View article: Multimode Operation for On-Line Uninterruptible Power Supply System
Multimode Operation for On-Line Uninterruptible Power Supply System Open
To enhance the robustness and disturbance rejection ability of an on-line uninterruptible power supply (UPS) system, an Internal Model Control (IMC)-based DC-link voltage regulation method is proposed in this paper. Furthermore, the multi-…
View article: A Voltage Modulated DPC Approach for Three-Phase PWM Rectifier
A Voltage Modulated DPC Approach for Three-Phase PWM Rectifier Open
In this paper, a voltage modulated direct power control for three-phase pulse-width modulated rectifier is proposed. With the suggested method, the differential equations describing the rectifier dynamics are changing from a linear time-va…
View article: Distributed Hierarchical Control of AC Microgrid Operating in Grid-Connected, Islanded and Their Transition Modes
Distributed Hierarchical Control of AC Microgrid Operating in Grid-Connected, Islanded and Their Transition Modes Open
In this paper, a distributed hierarchical control is proposed for ac microgrid, which could apply to both grid-connected (GC) mode and islanded (IS) mode as well as mode transitions. The control includes three control levels: 1) the basic …
View article: A Reduced-Order Enhanced State Observer Control of DC-DC Buck Converter
A Reduced-Order Enhanced State Observer Control of DC-DC Buck Converter Open
This paper presents a reduced-order enhanced state observer (RESO)-based control strategy for the PWM DC-DC buck converter. With the proposed RESO control strategy, the output voltage regulation of the DC-DC buck converter is able to achie…
View article: DC-Link Protection and Control in Modular Uninterruptible Power Supply
DC-Link Protection and Control in Modular Uninterruptible Power Supply Open
In this paper, a DC-link voltage protection (DCVP) control method is proposed to address the DC-link overvoltage issue due to power back-feeding in parallel Uninterruptible Power Supply (UPS) system. The proposed control method is able to …
View article: Virtual resistance-based control strategy for DC link regeneration protection and current sharing in uninterruptible power supply
Virtual resistance-based control strategy for DC link regeneration protection and current sharing in uninterruptible power supply Open
To address the DC link voltage regeneration issue in parallel Uninterruptible Power Supply (UPS) system, a DC link voltage protection (DCVP) method through online virtual resistance regulation is proposed. The proposed control strategy is …
View article: Second order washout filter based power sharing strategy for uninterruptible power supply
Second order washout filter based power sharing strategy for uninterruptible power supply Open
In this paper, first, the existing frequency and voltage amplitude restoration control strategies are reviewed. Moreover, the proposed second order washout filter control strategy is proposed to enhance the dynamic response under load dist…
View article: An enhanced control scheme for uninterruptible power supply
An enhanced control scheme for uninterruptible power supply Open
To address the active power feeding issue in the parallel Uninterruptible Power Supply (UPS) system, a DC-link Voltage Protection (DCVP) control strategy is proposed in this paper. The proposed control method only relies on local load info…
View article: Flexible operation of parallel grid-connecting converters under unbalanced grid voltage
Flexible operation of parallel grid-connecting converters under unbalanced grid voltage Open
According to the European grid code, grid-connecting converters should always be connected to the grid under grid voltage unbalance. However, grid voltage unbalance severely affects the stable operation of the converters and leads to the v…
View article: Feedforward control strategy for the state-decoupling Stand-alone UPS with LC output filter
Feedforward control strategy for the state-decoupling Stand-alone UPS with LC output filter Open
In this paper, the disturbance rejection performance of the cascaded control strategy for UPS system is investigated. The comparison of closed loop system performance between conventional cascaded control (CCC) strategy and state-decouplin…
View article: An Enhanced State Observer for DC-Link Voltage Control of Three-Phase AC/DC Converters
An Enhanced State Observer for DC-Link Voltage Control of Three-Phase AC/DC Converters Open
To regulate the DC-link voltage of three-phase AC/DC converters, an enhanced state observer (ESO)-based controller is presented in this letter. The proposed controller, contrary to the traditional ones, does not require the DClink current …
View article: Harmonic damping in dg-penetrated distribution network
Harmonic damping in dg-penetrated distribution network Open
Grid background harmonics may be amplified, propagate through a long distribution feeder and even lead to power system instability. In this paper, harmonic propagationissue is investigated and mitigation of the harmonics is analyzed by usi…
View article: Linear active disturbance rejection control for LCL type grid-connected converter
Linear active disturbance rejection control for LCL type grid-connected converter Open
This paper presents a linear active disturbance rejection control (LADRC) for grid-connected converter with LCL filter. The high rejection performance for external disturbance, internal decoupling, parameter variation is achieved by adopti…
View article: Analysis and damping of harmonic propagation in DG-penetrated distribution networks
Analysis and damping of harmonic propagation in DG-penetrated distribution networks Open
With the increasing penetration of nonlinear loads into distribution system, stable operation of power distribution system suffers challenge by harmonic voltage propagation and resonance amplification which is also known as whack-a-mole ph…