High-Power/Pulsed-Power Electrical Switch

The switch has uses in circuit protection systems in the electric power grid, high-power military applications, and power for materials processing.

Q&A: Switching Technology Improves Power Grid Efficiency

Kristin Sampayan from the Lawrence Livermore National Laboratory found a fast way to switch high voltages.

Method Improves Efficiency and Heat Tolerance of Devices

These are important traits in electronics and electrical systems including electric cars, industrial drills, and electric grids.

High-Voltage Power Line Multi-Sensor System

Government infrastructure facilities such as water treatment facilities, power plants, laboratories, and the like may be targets for terrorist attacks. Similarly, oil pipelines, power grids,...

Direct-Current Detector for Emergency Responder Safety

The Department of Energy's Oak Ridge National Laboratory has developed a direct-current detector technology to help emergency responders safely detect high voltages, which they have...

Auxiliary Power Solutions for 1500 VDC Photovoltaic Systems

Photovoltaic systems are continually evolving to improve their efficiency and financial viability. One trend is to move to larger strings of cells giving higher dc voltages to be...

Ultra-Wide-Bandgap Power Electronics

Power electronics used for routing, control, and conversion of electrical power traditionally utilize silicon semiconductors. These systems tend to be bulky, require active cooling, and are inadequate for...

Circuit Protection Challenges for Battery Management Systems

The market for higher-voltage automotive systems is expanding. The number of electric vehicles that use battery-powered drive systems having voltage equal to or higher than 48V is...

Demolition Probe Gives Construction Workers a Break

Initially designed for use on the Moon, the Electro-Hydraulic Fracturing system — developed at Auburn University with NASA funding — relies upon short, high-pulse power created by...

High-Voltage Power System for Hybrid Electric Aircraft Propulsion

Innovators at NASA’s Glenn Research Center have developed a variable-frequency, alternating current (AC) power system to enable turbo-electric and hybrid electric...

ADAS Design – Specialized Chipsets Do the Job

Advanced driver assistance systems (ADAS) are improving driver and pedestrian safety, providing vehicle capabilities such as pedestrian detection, lane departure warnings, collision avoidance,...

Driver Design in Piezoelectric Motors

For most electrical engineers, the simple term “motor” means one thing: an electromagnetic rotary-motion unit. Engineers who need linear rather than rotary motion consider adding a mechanical...

Electrical Requirements for Direct Current Electric Actuators

Servo control systems require accurate control of motion parameters such as acceleration, velocity, and position. This requires a controller that can apply current (torque) to...

Hydraulically Amplified Actuators

Soft robots are made from soft materials that react to applied voltage with a wide range of motions. Such soft robots contain tremendous potential for future applications, as they adapt to dynamic...

Silicon Carbide High-Voltage Switch

High-voltage wide bandgap (WBG) semiconductor devices like 15-kV silicon carbide (SiC) MOSFETs have attracted attention because of potential applications in high-voltage and high-frequency power...

Resistive Heating-Assisted Infiltration and Cure (RHAIC) for Polymer/Carbon Nanotube Structural Composites

NASA’s Langley Research Center scientists have developed a process for fabricating carbon nanotube (CNT) structural nanocomposites...

Electrochemical Method for Removing Pollutants from Water

When removing very dilute concentrations of pollutants from water, existing separation methods tend to be energy- and chemical-intensive. A new method was developed that could provide...

Products of Tomorrow: July 2017

This column presents technologies that have applications in commercial areas, possibly creating the products of tomorrow. To learn more about each technology, see the contact information provided for that...

Piezo Technology in Pneumatic Valves

Pneumatic valves made with piezo technology offer many advantages. They are small, lightweight, extremely precise, durable, fast, and save energy. Piezo valves do not need energy to maintain a switching...

Silicon Micro-Emitters for Microfluidic Electrospray Propulsion Systems

JPL's Microfluidic Electrospray Propulsion (MEP) thruster design is based on a microfabricated electrospray system with a capillary-force-driven feed system that uses...