Search Results - dushan boroyevich

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Embedded Screen for Containing Common-Mode Current within a Power Module
The invention contains common-made currents within the power semiconductor module instead of allowing them to flow into the ground loop through parasitic impedances in the system.
Published: 4/24/2017   |   Inventor(s): Christina Dimarino, Rolando Burgos, Dushan Boroyevich, Mark Johnson
Keywords(s):  
Category(s): Electrical
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
Switching-Cycle Control For The Modular Multi-Level Converter
This new control approach provides an operation mode on which the module capacitor ripple of the modular multilevel converter (MMC) can be reduced to roughly 10% of conventional design. This means that the capacitance value of the converter can be reduced to 10% of original design if meeting the same design criteria. The capacitor rated current is ...
Published: 12/19/2013   |   Inventor(s): Jun Wang, Rolando Burgos, Dushan Boroyevich, Bo Wen
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
Electrical Power System With High-Density Pulse Width Modulated (PWM) Rectifier
The present invention provides a single phase Pulse Width Modulated (PWM) rectifier for providing power to a direct current (DC) load that may have an increased power density relative to previous systems.
Published: 9/24/2012   |   Inventor(s): Ruxi Wang, Fred Wang, Dushan Boroyevich, Rolando Burgos, Kaushik Rajashekara
Keywords(s): Electronics
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
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
Two-Stage Bi-Directional Single-Phase Converter with DC-Link Capacitor Reduction
It is well-known that single-phase ac-dc conversion requires a bulky dc-link capacitor for filtering the ripple power from the grid, thus leading a overall bulky converter size. Also, in order to interface a dc renewable energy system to a single-phase utility grid, bi-directional power flow control and dc-bus voltage regulation are major concerns....
Published: 9/20/2012   |   Inventor(s): Dong Dong, Dushan Boroyevich, Ruxi Wang, Fred Wang
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
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