Advancing the state of the art in sensorless control of alternating-current motor drives and multilevel converters, the pioneering work of Kouki Matsuse has enabled high-performance and high-efficiency drive systems for industry application including electric vehicle propulsion. In the area of sensorless control, which provides advantages including low cost, increased reliability, and less maintenance, he proposed a method using signal injection to simultaneously identify motor speed and rotor resistance now widely used in industrial drive systems. He also developed an adaptive observer for regenerating-mode, low-speed operation of sensorless induction motor drives also widely used in industry. Regarding multilevel inverters, he developed five-level converters to overcome voltage imbalances, achieve unity power factors, and generate nearly sinusoidal input currents. This work plays a role in regenerating electric power back to the power grid.
An IEEE Life Fellow, Matsuse is an Emeritus Professor with Meiji University, Tokyo, Japan.