Company Filing History:
Years Active: 1988-1989
Title: Urpo Sten: Innovator in Voltage Regulation and Signalling Systems
Introduction
Urpo Sten is a notable inventor based in Hyvinkaa, Finland. He has made significant contributions to the fields of voltage regulation and signalling systems, holding a total of 3 patents. His work has been instrumental in enhancing the efficiency and functionality of various electrical systems.
Latest Patents
One of Urpo Sten's latest patents focuses on voltage regulation for three-phase inverters. This invention provides a method and apparatus for regulating the control voltage of a three-phase inverter that supplies an alternating current (a.c.) motor. The inverter utilizes semiconductor switches, and the output voltage of each inverter phase is measured for voltage control. The invention aims to improve the curve shapes of the inverter output through feedback, where the control voltage of the pulse width modulator for each inverter phase is regulated by a voltage regulator. The output from the voltage regulator is derived from an actual value voltage formed from the output voltage of each inverter phase and a reference voltage.
Another significant patent involves a signalling procedure for lifts. This invention informs the control system and users about lift calls and the state of the lift, including its position, movement, and availability. The signalling system employs serial communication between the control system computer and the actuating and signalling means in the lift car and on each floor level. To simplify wiring and enhance standardization, the system uses the polling principle for internal communication, allowing bi-directional data transmission through digital series loops.
Career Highlights
Urpo Sten has worked with prominent companies in the elevator industry, including Kone Elevator GmbH and Elevator GmbH. His experience in these organizations has contributed to his expertise in developing innovative solutions for lift systems and electrical regulation.
Collaborations
Throughout his career, Urpo has collaborated with notable professionals such as Matti J Kahkipuro and Pekka Nummi. These collaborations have further enriched his work and led to advancements in his field.
Conclusion
Urpo Sten's contributions to voltage regulation and lift signalling systems demonstrate his innovative spirit and technical expertise. His patents reflect a commitment to improving electrical systems and enhancing user experience in lift technology.