Wolfspeed, a pioneer of silicon carbide (SiC) power products, has expanded its C3M platform to include a 1,200 V MOSFET. The new device is designed to enable an increase in frequency while maintaining efficiency, lowering system cost, reducing circuit EMI, and enabling 99% efficiency levels in three-phase power factor correction circuits. The device uses Wolfspeed’s… Read more »
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Wireless charging and autonomous vehicles will mobilize the smart city
By Alex Gruzen, CEO of WiTricity There’s no question that autonomous electric vehicles are coming. From Google and Uber to Tesla, BMW and Nissan, the world’s most innovative brands are conceiving and bringing to market entirely new modes of transportation that will revolutionize the ways in which we travel. According to Navigant Research, by 2035… Read more »
Advancing BMS: Linear Technology launches its fourth-generation battery stack monitor
Engineers use battery management systems (BMS) to prevent problems that occur in Li-ion batteries when they are over-charged or over-discharged, including premature capacity loss and thermal events. A BMS ensures precise control and keeps the individual cells balanced, which is critical to extracting the most useful energy from a pack. Fortunately for EV systems designers,… Read more »
US Navy solicits bids to lease 400-600 EVs
Maybe they’re tired of going to war for oil, or maybe they just like to be frugal with taxpayer dollars – whatever the reasons, the US military continues to show a good bit of interest in electrifying its vehicle fleet (and in developing microgrids with V2G technology). In July, the US Navy announced plans to… Read more »
Texas Instruments introduces integrated battery monitor and protector
Texas Instruments (NASDAQ: TXN) has introduced what it calls the industry’s first integrated battery monitor and protector. The enticingly-named bq76PL455A-Q1 provides cell-voltage monitoring for large batteries with up to 256 cells in a series. The bq76PL455A-Q1 is designed to reveal a pack’s state of charge and state of health by precisely measuring cell voltage, and… Read more »
EVgo partners with UC San Diego on vehicle-to-grid projects
Charging network operator NRG EVgo is leading two pilot projects at the University of California San Diego to study the potential of vehicle-to-grid (V2G) technology. In the first project, EVgo has built a site to assess how owners of DC fast charging sites can use solar generation, battery storage and control systems to mitigate expensive… Read more »
A closer look at torque ripple – minimizing its effects on electric machines
The Switched Reluctance Motor, or SRM, is often discussed as a prime choice for the next-generation EV traction motor. It is simple, robust, and arguably the least expensive of all motor types to manufacture. However, SRMs are notoriously difficult to control, and prone to emitting significant amounts of vibration and acoustic noise. The good news… Read more »
Spoiler alert: Tesla’s “Major new product line” might just be home energy storage
Elon Musk is at it again, dropping hints about something really cool to be launched in a month’s time. “Major new Tesla product line — not a car — will be unveiled at our Hawthorne Design Studio on Thurs 8pm, April 30,” tweeted the Iron Man this week. Now begins another round of the Tesla… Read more »
University of Delaware to offer BMW Mini-E EVs for lease in V2G project
The University of Delaware is making a small number of BMW Mini-E EVs available for lease as part of an ongoing vehicle-to-grid (V2G) demonstration project. “Individual drivers are now needed to expand the demonstration over a wider range of driving patterns,” said project leader Willett Kempton. The Grid on Wheels program will lease the vehicles… Read more »
Ideal Power’s battery converters to be used in DoD V2G project
Ideal Power Inc. (NASDAQ: IPWR) has received a purchase order for ten of its 30 kW battery converters from Coritech Services, a provider of custom engineering solutions for EV charging. Coritech intends to install the converters in its bi-directional charging system for use in Vehicle-to-Grid (V2G) applications for the Department of Defense (DoD). The US… Read more »