Power Electronics

 

Chapter 19: Motion-System Power Management

The key component in a motion system is the motor because it determines the design of the associated motion controller as well as the motor drive. From a power-management viewpoint, the important motion-system design considerations are providing the appropriate control signals as well as the required drive power for the specific motor. Each motion controller […]

Read more >>> Chapter 19: Motion-System Power Management

The U.S. Department of Energy’s Pacific Northwest National Laboratory has issued its annual report on distributed wind capacity, revealing that large installations of distributed wind power almost doubled in 2017. Distributed wind power is localized, so the power is generated near where it will be used rather than originating in remote commercial wind farms and […]

Read more >>> Distributed Wind Power on the Rise

Every engineer knows that a stable, well-regulated power supply is needed to perform reliable and consistent circuit and subsystem tests. But what about testing a new power-supply, regulator, or converter design itself? Before a circuit designer decides on a particular power supply, he or she will first want to test it carefully. The datasheet for […]

Read more >>> Testing Power Supplies: Small Issues Have Big Effect on Results

Out of all of the fundamental passive electronic components, capacitors are arguably the most abundantly used. In fact, it is hard to find a circuit board that does not have a capacitor on it and a circuit that does not use a capacitor. Capacitors  play key roles in the design of filters, amplifiers, power supplies […]

Read more >>> Capacitor Basics and Their Uses in Power Applications

Electronic lighting using LEDs is one of today’s most rapidly evolving technologies. The major reason for this growth is the development of white LEDs whose efficiency keeps increasing. By 2020, the U.S. Department of Energy (DoE) estimates that commercial LED lighting efficiency will be as high as 258 lumens per watt, or two and a […]

Read more >>> Power Management Chapter 18: Electronic lighting

Finding a cost-effective and efficient solid-state battery for electric vehicles could prove equivalent to finding the golden fleece in Greek mythology. According to the legend, anyone who possessed the golden fleece would be considered a true ruler. According to the present technology, anyone who could develop a cost-effective and efficient solid-state battery would rule the […]

Read more >>> Who Will Win the Race for an EV Solid-State Battery?

I am a proud member of a golden generation of the electrical engineering class of 1966 at Belgrade University, former Yugoslavia. More than 1,000 candidates took two grueling entrance exams competing for 300 spots: one in physics and another one with two sittings in mathematics lasting six hours. Officially, only four people passed with 45 […]

Read more >>> My 50 Years in Power Electronics

The book Solar Energy Storage by Brent Sorensen notes that “electricity generated from intermittent sources requires efficient advanced electricity storage systems (ESSs). Electrical energy storage refers to the process of converting electrical energy from a power network into a form that can be stored and then converted to electrical energy when needed. Such a process […]

Read more >>> Power Management Chapter 17: Energy Storage

As many OEMs, plus tier 1 and tier 2 manufacturers will attest, the multi-layer ceramic capacitor (MLCC) industry is currently experiencing a significant capacity and supply issue. The last time we saw such shortages was around the turn of the millennium. Manufacturers are putting in capacity, but this takes time to feed through and presents […]

Read more >>> Here’s One Solution to Overcome Those MLCC Shortages

Kevin Anderson, senior analyst at IHS Markit, says the average number of advanced driver-assistance systems (ADAS) installed in vehicles, including blind-spot information, adaptive cruise control, lane-departure warning, rear automatic braking, and other features joining the now ubiquitous backup cameras, will grow from an average of 1.6 per vehicle today to 3.8 in 2023. ADAS automate, […]

Read more >>> Automotive Power Semiconductor Market Hits the Throttle

NASA is pursuing a program that integrates unmanned aircraft systems (UAS) into the National Airspace System, or UAS-NAS. This involves identifying, developing, and testing the technologies and procedures that will make it possible for UAS to have routine access to airspace occupied by human-piloted aircraft. Four NASA centers support the UAS-NAS project: NASA’s Ames Research Center […]

Read more >>> Unmanned NASA Aircraft Flies in Public Airspace Without a Chase Plane

The Microsystems Technology Office at DARPA is searching out for innovative proposals that enable revolutionary advances in robotic science, devices, or systems (see figure). Specifically excluded is research that primarily results in evolutionary improvements to the existing state of practice. The requested proposals will cover the following areas: Actuator materials and actuator mechanism development Integrated […]

Read more >>> DARPA Seeks Proposals for Revolutionary Advances in Mini-Robots

Wind power, as an alternative to burning fossil fuels, is plentiful, renewable, widely distributed, clean, produces no greenhouse gas emissions during operation, and uses little land. The net effects on the environment are far less problematic than those of nonrenewable power sources. Wind power is very consistent from year to year, but has significant variation […]

Read more >>> Power Management Chapter 16: Wind Power

Designers often need to measure and manage power consumption of low-voltage, high-power ICs such as FPGAs and GPUs to manage performance or anticipate problems. But this simple-sounding task has some implementation complexity and operational subtlety. The challenge is compounded when there’s also a need to know total energy use, which is a function of the […]

Read more >>> Chip Addresses IC Power-Measurement Challenge

The eCitaro, unveiled by Mercedes-Benz this year, is the company’s first all-electric production bus, an electric version of the company’s combustion-engine Citaro (Fig. 1). The eCitaro, expected to go on sale by the end of 2018, will be able to transport about 88 passengers, and will initially be a plug-in battery electric. Its batteries are modular, […]

Read more >>> This Bus Is Ready to Electrify Public Transit

Switching regulators for space-constrained systems require attention to electronics, mechanical design, and system manufacturing considerations. The electronics details are usually viewed as the primary design considerations, but the other two factors are also important. For example, mechanical and manufacturing considerations play an important role in the VQFN-packaged LMR33630 from Texas Instruments. (The LMR33630 is also […]

Read more >>> 36 V, 3 A Synchronous Converter Comes in a Small Package

With their low equivalent series resistance (ESR), which allows for good ripple-current handling as well as high surge-voltage ratings and self-healing properties, film capacitors are strong candidates for many power-conditioning duties in key applications like electric vehicles, renewable energy, and industrial drives. They’re especially suited to scenarios where no hold-up (or ride-through) is required, such […]

Read more >>> Selecting Film or Electrolytic Capacitors for Power-Conversion Circuits

In developed regions such as Europe and North America, integration of Internet of Things (IoT) technology in vehicles is expected to boost the adoption rate of vehicle-tracking systems. Such systems can be active or passive—they collect data in the same way and are equally accurate. The main difference between active and passive involves time. Active […]

Read more >>> Vehicle-Tracking Systems Demand Integrated Battery Power Management

Wide-bandgap (WBG) power semiconductors—and silicon-carbide (SiC) devices in particular—can help significantly improve the energy efficiency and reliability of various types of power converters. These include inverters for use cases such as electric vehicles, renewable-energy micro-generators, and data-center power supplies. Other widely used circuits, such as choppers, half-bridges, totem-pole PFC stages, and soft-switched dc-dc converters, can […]

Read more >>> Hybrid Cascodes Simplify SiC Adoption in Popular Power Circuits

HAPS is happening. UAVOS Inc.’s HAPS (High Altitude Pseudo Satellite) aircraft, being developed with a flexible wing for high-altitude unmanned flight, will provide unique opportunities for both civilian and defense areas, as well as for security tasks. Unmanned aerial vehicles (UAVs) powered by solar energy can serve for long continuous monitoring of the area of interest […]

Read more >>> Prototype Solar-Powered, High-Altitude UAV Undergoing Flight Tests

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