Huadong Sun

Research on the Mutual Damping Repulsion Mechanism of Multi-Modal Low-Frequency Oscillations in Grid-Forming Converter

Letian Wang, Shiyun Xu, Huadong Sun, Jingtian Bi et autres

The coupling between the synchronization loop (SC) and DC voltage control loop (DVC) of a virtual synchronous generator (VSG) controlled grid-forming converter (GFM) is prone to cause multi-modal low-frequency oscillations (LFO). These multi-modal oscillations consist of SC dominant LFO (SC- LFO) and …

cn (code pays fourni par la source)

Time-Symmetric Sampling to Eliminate Pulse-Width-Modulation Delay in Digital Controlled Three-Phase Inverter

Yuan Chen, Bo Zhang, Dongyuan Qiu, Yanfeng Chen et autres

In this article, a time-symmetric sampling method is proposed to eliminate the pulse-width-modulation (PWM) delay in digital PWM (DPWM) inverters. To attain this objective, an analysis of the sampling’s impact on the PWM delay is conducted first. Based on the discrete-time analysis, …

cn (code pays fourni par la source)

Multiple Wind Farms Modeling Method for Sub/super-synchronous Oscillation Characteristics Analysis

Huadong Sun, Ruihua Song, Yalou Li, Zutao Xiang et autres

To address the issue of high model order and low simulation efficiency resulting from large-scale wind power integration during the analysis of sub/super-synchronous characteristics, this article puts forward a multiple wind farms modeling method for sub/super-synchronous characteristics analysis. Firstly, the impedance model …

cn (code pays fourni par la source)

Equivalent range of high-proportion renewable energy networks for subsynchronous oscillation characteristics analysis

Huadong Sun, Ruihua Song, Yalou Li, Zutao Xiang et autres

Maximum Transferred Power Constraints Analysis of the Grid-Tied VSC Based on the Modified Transfer Function

Rui Yin, Huadong Sun, Shanshan Wang, Guanglu Wu et autres

This letter establishes the constraints identification index of grid-tied voltage source converter (VSC) maximum power transfer points. The phase-locked-loop linearization model is firstly modified to diminish the instability identification errors of the parameter design-oriented transfer function. Based on the proposed transfer function, …

cn (code pays fourni par la source)

Calculation method of renewable maximum penetration considering frequency response of renewable energy

Baocai Wang, Huadong Sun, Bing Zhao, Ping Chen Wu et autres

us, cn (code pays fourni par la source)

Test Models for Stability/Security Studies of AC-DC Hybrid Power Systems With High Penetration of Renewables

Huadong Sun, Bing Zhao, Shiyun Xu, Tiankai Lan et autres

Modern bulk power systems are developing into AC-DC hybrid systems with high penetration of renewables. There has been a lack of representative benchmarks to study stability and security problems of modern power systems. This paper presents an attempt to provide a set …

cn (code pays fourni par la source)

Switched Active Power Control of a Grid-Connected Inverter With Reduced RoCoF and Frequency Overshoot

Yuan Chen, Bo Zhang, Dongyuan Qiu, Yanfeng Chen et autres

In this article, a switched active power control of the grid-connected inverter is proposed. First, the principle of the proposed control is demonstrated with the phase trajectory analysis. The proposed control allows for direct adjustment of the maximum rate of change of …

cn (code pays fourni par la source)

Maximum Penetration Calculation Method Considering Frequency Response of Renewable Energy

Baocai Wang, Huadong Sun, Bing Zhao, Ping Chen Wu et autres

cn (code pays fourni par la source)

Equivalent Range of High-Proportion Renewable Energy Networks For Subsynchronous Oscillation Characteristics Analysis

S. S. Lv, Huadong Sun, Ruihua Song, Yalou Li et autres

cn (code pays fourni par la source)

s-Domain Model of Single-Sampling and Multisampling DPWM DC–DC Converter Based on Discrete-Time Analysis

Yuan Chen, Bo Zhang, Dongyuan Qiu, Yanfeng Chen et autres

This paper proposes a general s-domain model of the single-sampling and multi-sampling digital pulse width modulation (DPWM) DC-DC converter. The proposed model has two main characteristics. First, the PWM delay is modeled by both time delay and state feedback rather than the …

cn (code pays fourni par la source)

A Quantitative Stability Evaluation Method of VSC for Optimizing Control Parameters and Extending Stability Boundary to Avoid Oscillations

Xiaofeng Jiang, Xiaoyan Han, Huadong Sun, Lei Liu et autres

Oscillations caused by the interaction between voltage source converters (VSCs) and weak grids are vital threats to the stability of power systems. Determining the appropriate parameters for the control of VSCs is essential to prevent the occurrence of oscillations in advance. To …

cn (code pays fourni par la source)