Search Results - paolo mattavelli

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Optimal Battery Current Waveform for Bidirectional PHEV Battery Charger
This disclosure generally investigates and evaluates a high density, high efficiency and long lifetime power converter which interfaces the single phase AC voltage to an energy storage device. This converter could be either unidirectional or bidirectional. In this power converter, the charging or discharging current of the energy storage device is ...
Published: 12/22/2014   |   Inventor(s): Lingxiao Xue, Paolo Mattavelli, Dushan Boroyevich
Keywords(s):  
Category(s): Electrical, Energy, Engineering
System and Method for Impedance Measurement Using Series and Shunt Injection
The invention is system architecture and its implementation used to measure impedances online in balanced three-phase systems. The impedance is a useful tool in the work related to small signal system stability. It is beneficial to both system integrators and component vendors. The extracted impedances of system components can be used to assess the...
Published: 2/10/2014   |   Inventor(s): Zhiyu Shen, Marko Jaksic, Paolo Mattavelli, Dushan Boroyevich, Jacob Verhulst, Mohamed Belkhayat
Keywords(s):  
Category(s): Electrical, Engineering
System and Method for Impedance Measurement Using Chirp Signal Injection
The invention is an algorithm used to measure impedances in balanced three-phase systems. The impedance is a useful tool in the work related to small signal system stability. It is beneficial to both system integrators and component vendors. The extracted impedances of system components can be used to assess the system stability before system integ...
Published: 7/15/2013   |   Inventor(s): Zhiyu Shen, Marko Jaksic, Paolo Mattavelli, Dushan Boroyevich, Jacob Verhulst, Mohamed Belkhayat
Keywords(s):  
Category(s): Electrical
Islanding Detection Using Phase-Locked-Loop Small-Signal Instability For Three-Phase Power Inverters
A simple and effective anti-islanding detection is required to meet IEEE standard 1547 for every distributed generation unit. Many research papers and patents work on this issue, and there exists lots of solutions. All the existing solutions suffer the complicated design and lots of implementation procesess. Some of them tend to destabilize the gri...
Published: 9/20/2012   |   Inventor(s): Dong Dong, Dushan Boroyevich, Paolo Mattavelli, Bo Wen
Keywords(s):  
Category(s): Electrical
I2 Average Current Mode Control of Switching Converters
In this invention, the I2 control average current mode is proposed. The conventional constant frequency average current mode control is a widely used control scheme for the converters requiring precise current control, but its transient response is relatively slow, while the switching loss and driving loss significantly diminish the light load effi...
Published: 9/20/2012   |   Inventor(s): Yingyi Yan, Fred Lee, Paolo Mattavelli
Keywords(s):  
Category(s): Electrical
Stability Analysis Suite (STASU) for DC and Three-Phase AC Electrical Power Systems
A comprehensive analysis toolset is developed for addressing the system stability at alternating-current (AC) and direct-current (DC) electrical interfaces from test and simulation results of small-signal dq and DC impedances. The software tool also includes Graphical User Interfaces (GUI) to facilitate fast and flexible data visualization and anal...
Published: 9/20/2012   |   Inventor(s): Marko Jaksic, Bo Zhou, Bo Wen, Paolo Mattavelli, Dushan Boroyevich, Sheau-Wei Fu, Kamiar Karimi
Keywords(s):  
Category(s): Electrical
Anti-Islanding Detection Algorithm and Modeling Approach for Three-Phase Distributed Generation Unit
A simple and effective anti-islanding detection is required to meet IEEE standard 1547 for every distributed generation unit. Many research papers and patents work on this issue, and there exists lots of solutions. All the existing solutions suffer the complicated design and lots of implementation processes. Some of them tend to destabilize the gri...
Published: 9/14/2012   |   Inventor(s): Dong Dong, Dushan Boroyevich, Paolo Mattavelli
Keywords(s):  
Category(s): Electrical
DC Leakage Current Reduction for Single-Phase Full-Bridge Converter
The switching-frequency dc leakage current issue exists in the single-phase full-bridge topology with the unipolar modulation switching scheme. It is important to reduce the leakage current, which has a negative impact on the solar panels. With the emerging market on solar inverter, there are lots of patents filed by different companies on solving ...
Published: 9/14/2012   |   Inventor(s): Dong Dong, Fang Luo, Dushan Boroyevich, Paolo Mattavelli
Keywords(s):  
Category(s): Electrical
External Ramp Autotuning for Current Mode Control of Switching Converter
In this invention, a novel external ramp autotuning solution for the current mode control of switching converters is proposed. Conventionally, using fixed external ramp needs to be based on the worst-case condition, while prior adaptive ramp compensation strategies cannot adapt to component tolerance and topology change. Therefore, using either app...
Published: 9/5/2012   |   Inventor(s): Pei-Hsin Liu, Fred Lee, Yingyi Yan, Paolo Mattavelli
Keywords(s):  
Category(s): Electrical
An Algorithm and Implementation System Architecture for the Measurement of Impedances in the D-Q Frame Domain
The growing need for a highly reliable electrical supply for critical applications has spawned the development of local distribution systems with the extended use of power electronics. The advantages are numerous. The downside is that the higher interactions within the system can easily lead the system to operate outside its limits due to instabili...
Published: 9/5/2012   |   Inventor(s): Gerald Francis, Rolando Burgos, Dushan Boroyevich, Fred Wang, Zhiyu Shen, Paolo Mattavelli, Kamiar Karimi, Sheau-Wei Fu
Keywords(s):  
Category(s): Electrical
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