Search Results - woongkul+lee

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Executive Summary The global electrification of aviation, transportation, and industrial systems is creating urgent demand for electric machines that combine high power density, operational safety, and supply‑chain resilience. Conventional permanent‑magnet machines rely on rare‑earth materials, driving cost volatility and limiting fault tolerance....

Published: 1/12/2026 | Inventor(s): Kangbeen Lee, Woongkul Lee, Gavin Gardner, Ryan Atkinson

Keywords(s): Electrical and Electronics

Category(s): Electrical

Bidirectional Indirect Matrix Converter Circuit for DC Fast Charging

Executive Summary Indirect matrix converters (IMCs) are commonly used in AC/AC converters, which comprise a major power electronics component of DC fast chargers, motor drives, and other electrical power converters. A common use is to convert between 120V, 60Hz, 3-phase grid power to 50kHz+ PWM waveforms for use by systems further ‘downstream’....

Published: 12/8/2025 | Inventor(s): Woongkul Lee, Avinash Dornala

Keywords(s):

Category(s): Electrical, Mobility, Subassemblies and Components

Modular and Scalable Solar Microinverter

Executive Summary Induction motors are used in a myriad of applications. Often, however, they are oversized and draw high starting currents which typically incurs additional electricity charges. For pumping applications, this can also lead to excess wear of the pump and piping system. While a variable speed drive (VSD) may alleviate this problem, VSD’s...

Published: 1/6/2025 | Inventor(s): Woongkul Lee, Younsuk Dong, Musab Guven

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Category(s): Mobility, Electrical, Energy

Modified Green Tea Polyphenol EGCG and EGCG-ester Inhibit Endospores

Modified Green Tea Polyphenol EGCG and EGCG-ester Inhibit EndosporesResearchers at Augusta University have invented skin-friendly compositions and methods for killing, inactivating, or otherwise reducing the bacterial endospores by using an effective amount of the green tea EGCG or its derivatives. EGCG research shows clear application for a hand sanitizer...

Published: 4/21/2023 | Inventor(s): Stephen Hsu, Lee Lee, Tin-Chun Chu

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Category(s): Therapeutics