Voltage control

Charging Electric Vehicle Batteries: Wired and Wireless Power Transfer

June 21, 2022 by Hua Kevin Bai; Daniel Costinett; Leon M. Tolbert; Ruiyang Qin; Liyan Zhu; Ziwei Liang; Yang Huang

Due to the environmental concerns about CO2-caused global warming, policymakers are pushing electrified vehicles (EVs) to reduce these emissions. For passenger vehicles only, the electrified fleet is forecasted to reach 80 million in the U.S. and 500 million globally by 2040. Key enablers for such rapid EV adoption include the improvement of battery energy density, lifespan and … [Read more...] about Charging Electric Vehicle Batteries: Wired and Wireless Power Transfer

Power Electronics Hardware Design for Manufacturability

December 1, 2021 by Grant Pitel and Adam Pitel

With a small, diverse team of engineers, Magna-Power Electronics can offer over 160,000 different configurations of programmable power supplies and electronic loads, spanning current levels up to 10,000 Adc, voltage levels up to 10,000 Vdc, and power levels up to 3,000 kW. This feat is made possible through tightly integrated engineering and manufacturing teams, minimizing … [Read more...] about Power Electronics Hardware Design for Manufacturability

Assessing SMPS Voltage Regulator Dynamics From Output Impedance

March 1, 2021 by David Bourner

Stable operation of a SMPS (switching voltage power supply) hinges on action within the feedback control and compensation network. The way in which the regulator performs is also influenced by the nature of filters attached on either side of it between the source and load. This article shows how stability can be assessed using only knowledge of the system’s output impedance. … [Read more...] about Assessing SMPS Voltage Regulator Dynamics From Output Impedance

A technology revolution is unfolding around us as every major mode of transportation is in some stage of electrification, whether on land, sea, or in the air. All of these transportation modes depend on electric machines that play critical roles in both propulsion systems as well as in a wide variety of accessory equipment. Fuel economy and reduced emissions of greenhouse gases and other pollutants are major driving forces for electrified transportation. Despite the significant differences between these varied transportation modes, they all share strong motivations to make their electric machines and adjustable-speed drives smaller, lighter, and more efficient. An excellent example of this trend for the power electronic drives is provided by comparing the drive units in the Tesla S (2012) and Tesla 3 (2017). As shown in the side-by-side views provided in Figure 1, the drive unit shrank in size from an enclosure that matched the size of its main traction motor to a much smaller unit that, at first sight, appears to be a non-descript end-bell attached to one end of the motor. Rather than focusing here on how this impressive reduction in mass and volume was achieved (addressed later in this article), the key point here is that similar technology trends are under way in many of the other transportation modes as well, making electrified transportation increasingly appealing and competitive in the process.

Charging Electric Vehicle Batteries: Wired and Wireless Power Transfer

Power Electronics Hardware Design for Manufacturability

Assessing SMPS Voltage Regulator Dynamics From Output Impedance

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Voltage control

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