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29 Results for 'Power electronics & control systems'
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Technology
Heater to Prevent Water Valve Freezing on Firetrucks
A core function of firetrucks and tenders are to haul initial water to an emergency and often serve as a sole source when water is not nearby from a hydrant or other source. As part of their key roles...
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Colin Feuster | T200035US02
Technology
Current Source Inverter With Bidirectional Switches Background
Thomas Jahns, Hang Dai, Bulent Sarlioglu, Renato Amorim Torres | P190167US01
Technology
Controller For Self-Organizing Microgrid
Venkata Giri Venkataramanan, Ashray Gururaja Manur | P200047US01
Technology
Switch Network Of A Multilevel Power Converter Architecture
Daniel Ludois, Mahima Gupta, Venkata Giri Venkataramanan, Robert Cuzner | P170314US01
Technology
Semiconductor Switch
Venkata Giri Venkataramanan | P190065US01
Technology
Low Voltage Drop, Cross-Field, Gas Switch And Method Of Operation
James Lawler, William Hitchon, Tim Sommerer, David Smith, Steve Aceto, Jason Trotter, Joseph Michael, Kirk Marquard | P180151US01
Technology
Integrated Capacitor, Inductor and Resistor for Use as a Power Converter Filter
High-power electrical equipment such as electrical motors are increasingly powered using alternating current (AC) synthesized using semiconductor devices. Desirably, the semiconductors are operated in...
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Daniel Ludois, Andy Schroedermeier | P170329US01
Technology
Integrated Vertical Axis Wind Turbine System Generates More Power from Less Wind with Smaller Turbines
Although horizontal axis wind turbines currently dominate the wind power industry, their vertical axis counterparts offer several advantages. For example, vertical axis systems are powered by wind com...
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Md Maruf Hossain | T170048WO01
Technology
Converter Control with Reduced Link Capacitor
A converter is an electrical device for converting electrical energy from one form to another, such as between alternating current (AC) and direct current (DC), between different voltages or frequenci...
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Venkata Giri Venkataramanan, Mahima Gupta | P170108US01
Technology
Inverter for Common Mode Voltage Cancellation
In a drive system, a voltage source inverter (VSI) may be used to transfer real power from a DC power source to an AC load. Conventional VSIs consist of two or three phase-legs, each of which is a ser...
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Bulent Sarlioglu, Di Han | P160142US01
Technology
Combined Capacitor/Inductor Reduces Circuit Bulk
Inductors and capacitors are fundamental building blocks in many electrical devices and provide energy storage. Inductors store energy in the form of a magnetic field in the vicinity of a coiled condu...
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Daniel Ludois | P140216US01
Technology
Interface Switch for Distributed Energy Resources
Distributed energy resources (DER) are small power generators that are typically located near the customer’s load, where energy is used. Small DER produce low emissions, can be manufactured at l...
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Robert Lasseter, Paolo Piagi | P05322US
Technology
Device and Method for Reducing the Electromagnetic Interference (EMI) Generated by Power Converters
As a byproduct of normal operation, electrical circuits can induce unwanted signals, or noise, in other circuits, thereby degrading performance. This problem, known as electromagnetic interference (EM...
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Venkata Giri Venkataramanan, Nicolai Mortensen | P06071US
Technology
Combined Capacitor/Inductor with Improved Performance
Inductors and capacitors are fundamental building blocks in many electrical devices and provide energy storage. In many applications (both low- and high-powered electronics) the physical size of these...
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Daniel Ludois, Andy Schroedermeier | P150389US01
Technology
Lighter, Cheaper Multilevel Converter for Adjustable Speed Drives
An adjustable speed drive (ASD) is a power electronics device that controls the speed of machinery. These devices also save energy for industrial processes that require adjustable speed or controlling...
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Yehui Han, Jiyao Wang | P140112US01
Technology
Reducing DC-DC Converter Loss for More Efficient Cars
DC-DC converters are used in a variety of devices to raise or lower voltage. They are used in the power systems of hybrid and electric vehicles to boost the battery’s output voltage. In these system...
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Robert Lorenz, Chi-Ming Wang, Masaki Wasekura | P130119US01
Technology
New Flexible Mechanical Structure for Improved Wireless Power Transmission
Permanent magnet synchronous machines are one type of electrical rotating machine (i.e., motor or generator), which are common in hybrid vehicles and wind turbines. Although these machines have a high...
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Daniel Ludois, Justin Reed, Kyle Hanson | P110321US01
Technology
New Capacitive Method for More Efficient Power Generation
Many commonly used machines require moving and stationary parts to generate electricity. Conventional rotating electrical machines utilize magnetic fields and/or a change in inductance between moving ...
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Daniel Ludois | P120094US01
Technology
Dual Bridge Matrix Converter for AC to AC Power Conversion
A variety of circuit topologies using solid state switches have been developed to convert AC power at one frequency to AC power at another. One type of topology, known as the matrix converter, directl...
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Thomas Lipo, Lixiang Wei | P01231US
Technology
AC to AC Frequency Converters with a Three-Phase Isolated Vector Switching Structure
Many power conversion applications require the conversion of AC power at one frequency to AC power at another. Most commercial AC to AC converters, such as those that achieve variable speed control in...
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Venkata Giri Venkataramanan | P02218US
Technology
Inverter Configurations with Shoot-Through Immunity
The two-switch phase leg – a basic building block topology for electrical power inverters – consists of a high- and a low-side semiconductor switch spanning a DC voltage source. Dead time ...
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Shihong Park, Thomas Jahns | P03213US
Technology
Efficient Boost Rectifier Employing Half-Rated Semiconductor Devices
Rectifiers are devices that convert alternating current (AC) into direct current (DC). The simplest and least expensive type of rectifier uses a full- or half-bridge of diodes to convert single- or th...
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Thomas Lipo, Debiprasad Panda | P04414US
Technology
Control of Small, Distributed Energy Resources
Distributed energy resources (DER) are small power generators that are typically located at customer sites where the energy they generate is used. Small DER produce low emissions, can be manufactured ...
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Robert Lasseter, Paolo Piagi | P02205US
Technology
High-Speed Digital-to-Analog Converter
Digital-to-analog converters (DACs) convert digital data, encoded as bits, into analog signals, such as current or voltage. For example, in devices like MP3 players and CDs, DACs convert audio signals...
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Daniel van der Weide, Kae Oh Sun | P06325US
Technology
Adjustable Speed Drive For Single-Phase Induction Motors
Widely used in applications such as HVAC, fans, pumps and home appliances, single-phase induction motors are manufactured in large volume and at low cost. These motors operate at a constant speed dete...
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Thomas Lipo, Miroslav Chomat | P00312US