Search Results for author: Xiaofan Cui

Found 12 papers, 0 papers with code

Challenges and Opportunities for Second-life Batteries: A Review of Key Technologies and Economy

no code implementations13 Aug 2023 Xubo Gu, Hanyu Bai, Xiaofan Cui, Juner Zhu, Weichao Zhuang, Zhaojian Li, Xiaosong Hu, Ziyou Song

Due to the increasing volume of Electric Vehicles in automotive markets and the limited lifetime of onboard lithium-ion batteries (LIBs), the large-scale retirement of LIBs is imminent.

Explainable Models

A Unified Analytical Method to Quantify Three Types of Fast Frequency Response from Inverter-based Resources

no code implementations20 Sep 2022 Shuan Dong, Xin Fang, Jin Tan, Ningchao Gao, Xiaofan Cui, Anderson Hoke

The simulation results in the IEEE 39-bus system with different types of FFR demonstrate that the proposed method provides an accurate and fast prediction of the frequency nadir under various disturbances.

Fast-Response Variable Frequency DC-DC Converters Using Switching Cycle Event-Driven Digital Control

no code implementations9 Sep 2022 Xiaofan Cui, Al-Thaddeus Avestruz

This paper investigates a new method to model and control variable-frequency power converters in a switching-synchronized sampled-state space for cycle-by-cycle digital control.

Overcoming High Frequency Limitations of Current-Mode Control Using a Control Conditioning Approach -- Part I: Modeling and Analysis

no code implementations21 Jun 2022 Xiaofan Cui, Al-Thaddeus Avestruz

In this paper, we provide a model framework based on a new control conditioning approach that guarantees global stability and a strategy for optimizing transient performance.

Overcoming High Frequency Limitations of Current-Mode Control Using a Control Conditioning Approach -- Part II: Implementation and Hardware

no code implementations21 Jun 2022 Xiaofan Cui, Al-Thaddeus Avestruz

This article is the second part of a paper series about interference in extremum (i. e., peak or valley) current-mode control, which applies to both fixed and variable switching frequency power converters.

A Note on Comparator-Overdrive-Delay Conditioning for Current-Mode Control

no code implementations19 Jun 2022 Xiaofan Cui, Al-Thaddeus Avestruz

Comparator-overdrive-delay conditioning is a new control conditioning approach for high-frequency current-mode control.

A Note on Low-Pass Filter Conditioning for Current-Mode Control

no code implementations12 Jun 2022 Xiaofan Cui, Al-Thaddeus Avestruz

The low-pass filter is a classic control conditioning approach for high-frequency current-mode control.

Large-Signal Stability Guarantees for Cycle-by-Cycle Controlled DC-DC Converters

no code implementations19 May 2022 Xiaofan Cui, Al-Thaddeus Avestruz

Stability guarantees are critical for cycle-by-cycle controlled dc-dc converters in consumer electronics and energy storage systems.

Lite-Sparse Hierarchical Partial Power Processing for Second-Use Battery Energy Storage Systems

no code implementations7 Jun 2021 Xiaofan Cui, Alireza Ramyar, Peyman Mohtat, Veronica Contreras, Jason Siegel, Anna Stefanopoulou, Al-Thaddeus Avestruz

In this paper, the statistical distribution of the power heterogeneity in the supply of batteries is used to optimize the choice of power converters and design the power flow within the battery energy storage system (BESS) to optimize power capability.

Comparing Power Processing System Approaches in Second-Use Battery Energy Buffering for Electric Vehicle Charging

no code implementations29 Apr 2021 Xiaofan Cui, Alireza Ramyar, Jason Siegel, Peyman Mohtat, Anna Stefanopoulou, Al-Thaddeus Avestruz

Results show that LS-HiPPP increases the battery energy utilization to 94% as compared to 78% for conventional partial power processing (C-PPP) and 23% for full power processing.

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