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Nowadays, due to the high-scale penetration of photovoltaic systems, reliable and efficient photovoltaic grid-connected systems using the advances of power electronics and advanced control techniques are desirable. In this paper, using the general structure for synchronous dq0 frame, a single-stage three-phase grid-connected photovoltaic inverter with a nonlinear control strategy is developed to generate...
DC arc characteristics • V-I equation modeling • High frequency noise modeling DC arc fault detection • Signatures from both time and time-frequency domain • Detection algorithm, implementation, and verification System level dc arc fault protection • DC arc faults in arbitrary locations • Fault responses and detection algorithm development • Interaction between protection and control.
The goal of this presentation is to draw the attention of power electronics design engineers who work, or are going to work, with isolation high-power, high-current, DC-DC converters. The main requirements of Power Electronics equipment are Cost, Reliability, andElectromagnetic Compatibility (EMI).
□Operates at both the first quadrant and the second quadrant in V-I plane □Classified into isolated and non-isolated bi-dc/dc □Isolated bi-dc/dc converters are classified into DABs with inductor tank, series resonant tank, and high order resonant tank etc. □Metrics for bi-dc/dc includes efficiency, voltage gain range, high power density, and dynamics etc.
• An exhaustive overview of the shipboard power system types, architectures, and load analysis • Various bus configurations, distribution schemes, and notable standards were discussed • Various energy storage devices and hybrid energy storage systems were introduced for their strengths in supporting shipboard power system load profiles • 4 unique control schemes to support a hybrid DC microgrid while...
“Electromagnetic compatibility (EMC) is the branch of electrical engineering concerned with the unintentional generation, propagation and reception of electromagnetic energy which may cause unwanted effects such as electromagnetic interference (EMI) or even physical damage in operational equipment.”
IGBT modules are plastic packages containing IGBT and free wheeling diode chips arranged in convenient circuit configurations. Typically they have an isolated base to allow easy heatsink mounting.
• Located in San Diego, California, near the Mexico Boarder • Ranked the best city in the world in terms of climate and best place to live • Full time equivalent students 30,000, enrollment∼ 68,000 • Joint Ph.D program with UC San Diego • Ranked 146 in the US News Report and 60 among all public schools • Highest student/faculty ratio in all research universities in the US • Some programs ranked top...
Commercial benefits of modern control methods □ Minimization of the cost per MVA of the power electronic system □ Superior performance during transientsand faults □ Operation within the safe operating area □ Reduced effort to designand adaptthe controller.
• The U.S Department of Energy launched the PowerAmerica Institute under the initiative of “National Network of Manufacturing Institutes (NNMI)” to Accelerate Adoption Wide Band Gap (WBG) power devices • PowerAmerica started operations in 2015 with $140M funds over 5 years, and is managed by North Carolina State University in Raleigh, NC USA • PowerAmerica addresses gaps in technology to enable manufacturing...
This presentation reviewed the basics of multi-objective optimization algorithms and showed their use in SyR-e to design surface PM machines. Next steps for PM machines in SyR-e: • Preliminary design (some features for fractional slot windings needs to be improved) • Sleeve sizing equations • Include other type of PM rotors • … suggestions?
Presents the introductory welcome message from the conference proceedings. May include the conference officers' congratulations to all involved with the conference event and publication of the proceedings record.
Transformer-less PV inverters are gaining widespread applications with lower cost, reduced footprint, and improved efficiency. This paper builds on a recently proposed topology with doubly grounded structure that can eliminate the common mode leakage current which is a major challenge in transformer-less PV inverters. An active power decoupling strategy is implemented in the above topology for double...
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