Company Filing History:
Years Active: 2012
Title: Juha-Pekka Ström: Innovator in Frequency Conversion Technology
Introduction
Juha-Pekka Ström is a notable inventor based in Lappeenranta, Finland. He has made significant contributions to the field of electrical engineering, particularly in the area of frequency conversion technology. His innovative approach has led to the development of a unique patent that enhances the efficiency of PWM frequency converters.
Latest Patents
Ström holds a patent for a "Frequency converter voltage pulse shaping device and method." This invention focuses on controlling the shape of the rising and falling edges of AC output voltage pulses generated by a PWM frequency converter. The method involves reducing the speed of change and height of the AC output voltage pulse. The PWM frequency converter rectifies alternating voltage from a supply network into a filtered DC voltage. A load bridge with power semiconductor phase switches then forms an AC output voltage from this DC voltage, allowing for precise control of the load. The average speed of voltage change is set using a phase switch, which alternates the conductivity of at least one power component for a duration of about one microsecond. This process transforms the pulse edge of the AC output voltage pulses into micropulses, with their width controlled to increase towards the final state of the phase switch.
Career Highlights
Throughout his career, Juha-Pekka Ström has worked with Vacon Oy and Vacon Oyj, where he has applied his expertise in frequency conversion technology. His work has contributed to advancements in the efficiency and performance of electrical systems.
Collaborations
Ström has collaborated with notable professionals in his field, including Hannu Sarén and Kimmo Rauma. These partnerships have fostered innovation and development in frequency conversion technologies.
Conclusion
Juha-Pekka Ström's contributions to frequency conversion technology exemplify his innovative spirit and dedication to advancing electrical engineering. His patent reflects a significant step forward in the efficiency of PWM frequency converters, showcasing his impact on the industry.