报告时间：10月26日（周六）下午15:00

报告地点：机自大楼604

报告题目：High-Dynamic Control of Induction Motors at Very Low Switching Frequency

报告摘要：Medium voltage AC machines driven by high-power inverters typically operate at reduced switching frequencies to minimize the switching losses of power semiconductor switches. Utilizing synchronous optimal pulse-width modulation helps achieve minimal harmonic distortion in machine currents under steady-state conditions. However, high-performance drives often encounter sudden changes in speed and load. Traditional current-based closed-loop control schemes struggle to maintain dynamic performance without disrupting the pre-optimized modulation patterns, posing challenges for maintaining efficiency during transient operations. With over 60 years of pioneering research, Professor Holtz has been a key witness to the transformative evolution of the motor drive field. His work on emerging control methods and cutting-edge technologies has enabled him to adapt seamlessly to the ever-changing demands of the industry. His profound insights and visionary leadership continue to guide the future of motor drive, offering a strategic outlook for upcoming advancements.

报告人简介：

Professor Joachim Holtz (Life Fellow, IEEE) is a distinguished scholar in the field of motor drives and power electronics. In 1977, he made a pioneering contribution by introducing the concept of the Three-Level Inverter. In 1983, he was the first to propose the Predictive Control algorithm for applications in power electronics. Professor Holtz is also credited with the invention of Space Vector Modulation, Synchronous Optimal Pulse-width Modulation, and sensorless control methods for Permanent Magnet Synchronous Motors (PMSMs) and induction motors, including sensorless speed and position control techniques. These groundbreaking contributions have significantly advanced the power electronics industry. In recognition of his achievements, Professor Holtz has been honored with the prestigious Lamme Medal, often referred to as the “Nobel Prize” in the field of electrical engineering. Additionally, he is a recipient of the IEEE William E. Newell Power Electronics Award, the IEEE Dr. Eugene Mittelmann Achievement Award, and the IEEE Millennium Medal, among several other influential international accolades. To mark the 60th anniversary of the IEEE Industrial Electronics Society, a special issue of the IEEE Industrial Electronics journal was published, featuring tributes from numerous renowned scholars in honor of Professor Holtz’s contributions.