Power Electronics - April 2024
This compendium of articles from the editors of Tech Briefs and Aerospace & Defense Technology magazines looks at the latest advances in power electronics and energy storage for applications ranging from electric vehicles to spacecraft to wearable devices.
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Overview
The April 2024 edition of the Power Electronics Special Report presents a comprehensive overview of recent advancements and innovations in the field of power electronics, focusing on various applications ranging from space technology to electric vehicles (EVs) and sustainable materials.
One of the standout features is the exploration of the Space Solar Power Demonstrator (SSPD-1) developed by Caltech’s Space Solar Power Project. This initiative aims to harvest solar energy in space and transmit it back to Earth. A key technology tested is the Microwave Array for Power-transfer Low-orbit Experiment (MAPLE), which utilizes an array of lightweight, flexible microwave power transmitters. These transmitters are driven by custom electronic chips made from low-cost silicon technologies, designed to beam energy to specific locations. The report emphasizes the importance of lightweight and flexible energy transmission arrays to minimize fuel requirements for space launches, highlighting the potential for sustainable energy solutions from space.
In the realm of electric vehicles, the report discusses the ongoing evolution of charging infrastructure, particularly the implementation of plug-and-charge technology. This feature allows for seamless communication between EVs and charging stations, enhancing user experience. However, it notes that only about 30% of current EVs support this capability, indicating room for growth. The report also highlights the efforts of the Joint Office of Energy and Transportation and the National Charging Experience Consortium (ChargeX) to improve the reliability and interoperability of charging networks, aiming to replicate the convenience of traditional liquid-fueling infrastructure.
Another significant innovation covered is the development of conductive, biodegradable wires from designed proteins by researchers at the University of Bristol. These minuscule wires, made from natural amino acids and heme molecules, are compatible with conventional electronic components and could revolutionize the production of electronic materials by using harmless bacteria, thus reducing environmental impact.
The report also touches on the challenges faced by the EV charging infrastructure in the U.S., with automakers and charging companies striving to enhance reliability and availability. The need for cohesive collaborations among industry stakeholders is emphasized to address these challenges effectively.
Additionally, the report previews advancements in battery technology, including next-generation flow batteries and improved fabrication approaches for more efficient batteries. These innovations aim to enhance battery performance, energy retention, and power levels, which are crucial for the growing demand for energy storage solutions.
Overall, the April 2024 Power Electronics Special Report encapsulates a dynamic landscape of technological advancements in power electronics, showcasing how innovations in space energy transmission, electric vehicle charging, and sustainable materials are paving the way for a more efficient and environmentally friendly energy future. The report underscores the importance of collaboration across industries to tackle existing challenges and leverage new technologies for widespread adoption.
