Search Results - zhixin+miao

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Unified Fault and Stability Analysis in Unbalanced Power Grids
Advantages: Accurate analysis of unbalanced topology in power grids Improved understanding of fault behavior and system stability Simplified and efficient analysis process Business Summary: This invention presents a modeling approach for unified harmonic and dynamic stability assessment of systems subject to unbalanced faults. The approach involves...
Published: 2/6/2024   |   Inventor(s): Lingling Fan, Zhixin Miao
Keywords(s): Energy Engineering, HVAC Systems
Category(s): Technology Classifications > Energy & Environment > Energy Engineering, Technology Classifications > Engineering > Electrical Engineering
Power System Stabilizer for Voltage Source Converters
Competitive Advantages Significantly enhances stability in weak grids and increases power delivery limits Multi-input multimode operation supporting both Type-3 and Type-4 grids Prevents and increases system robustness against oscillations and generator trips Summary Our researchers have configured feedback control circuitry to modulate either...
Published: 4/3/2024   |   Inventor(s): Lingling Fan, Zhixin Miao
Keywords(s): Green Technology
Category(s): Technology Classifications > Energy & Environment > Energy Engineering, Technology Classifications > Energy & Environment
Simultaneous Economic Dispatch and Frequency Regulation of Power Systems
USF inventors have developed a controller that linearly relates frequency deviation to power imbalance. This greatly facilitates the implementation of distributed decision making using tunable platforms reflecting frequency dynamics. This invention also provides methods to optimize the parameters of the provided tiered local and global integral control...
Published: 8/25/2023   |   Inventor(s): Zhixin Miao, Lingling Fan
Keywords(s):  
Category(s): Technology Classifications > Electronics, Technology Classifications > Energy & Environment > Energy Engineering, Technology Classifications > Software, Technology Classifications > Energy & Environment
Coupling Dynamics for Power Systems with Iterative Discrete Decision Making Architectures
USF inventors have developed a power system control method that uses machine learning as a method of decision making within the system. The system is decentralized as it uses multiple control agents to perform decision making while limiting the exchange of information, protecting information privacy. This invention is applicable to the development of...
Published: 8/25/2023   |   Inventor(s): Zhixin Miao
Keywords(s):  
Category(s): Technology Classifications > Electronics, Technology Classifications > Energy & Environment > Energy Engineering, Technology Classifications > Software, Technology Classifications > Energy & Environment
Synchronous Generator Modeling and Frequency Control Using Unscented Kalman Filter
Inventors at USF have used PMUs over Supervisory Control and Data Acquisition (SCADA) systems for synchronous generator parameter estimation because of their high density sampling rate and their ability to capture system electromechanical dynamics. Unscented Kalman Filter (UKF) has been implemented to estimate dynamic states and parameters of low order...
Published: 8/25/2023   |   Inventor(s): Lingling Fan, Zhixin Miao, Hossein Aghamolki
Keywords(s):  
Category(s): Technology Classifications > Electronics, Technology Classifications > Energy & Environment > Energy Engineering, Technology Classifications > Software, Technology Classifications > Energy & Environment
Multi-Agent Decision Making System for Economic Operation and Frequency Regulation
USF inventors have developed multi-agent decision making systems and methods based on primal-dual decomposition-based distributed optimization that are designed for economic operation and frequency regulation. The effect of these decision making strategies on power system frequency responses and coupling dynamics between the power market and system...
Published: 8/25/2023   |   Inventor(s): Zhixin Miao, Lingling Fan
Keywords(s):  
Category(s): Technology Classifications > Electronics, Technology Classifications > Energy & Environment > Energy Engineering, Technology Classifications > Software
Improved Frequency - Domain Impedance Identification for Power Grid Electronics
Competitive Advantages Obtains impedance using a few sets of time-series data Can replace existing harmonic injection method to obtain impedance Summary We have developed an alternative method to characterize inverters through impedance by using only a few sets of time-series data. This data is then analyzed through Eigensystem Realization...
Published: 7/18/2023   |   Inventor(s): Lingling Fan, Zhixin Miao
Keywords(s): Electronics, Energy Engineering, Industrial Applications
Category(s): Technology Classifications > Energy & Environment > Energy Engineering, Technology Classifications > Energy & Environment
Microsecond Time-Resolved Mass Spectrometry [ID 10004]
OverviewAt this time the predominant method for a pharmaceutical chemist to characterize reaction kinetics is to employ spectroscopy. The main issue with this technique is that spectroscopy produces an absorption/Emission spectrum and it is possible for multiple different compounds to have the same spectrum peak, making it difficult to differentiate....
Published: 10/13/2020   |   Inventor(s): Hao Chen, Zhixin Miao
Keywords(s):  
Category(s): Physical Science > Chemistry
On-line and Off-line Coupling of Electorchemistry (EC) with Mass Spectrometry by Liquid Sample DESI OU [ID: #09030]
A variety of ambient ionization methods have been introduced, including desorption electrospray ionization (DESI). DESI is a representative method for ambient mass spectrometry. It has been shown to be useful in providing a rapid and efficient means of desorbing and ionizing a variety of target compounds of interest under ambient conditions. In U.S....
Published: 2/23/2022   |   Inventor(s): Hao Chen, Jiwen Li, Zhixin Miao
Keywords(s):  
Category(s): Physical Science > Chemistry, Life Science > Mass Spectrometry