Markku Niemelä

Title: Markku Niemelä: Innovator in Electric Drive Devices and Alkaline Water Electrolysis

Introduction

Markku Niemelä is a notable inventor based in Lappeenranta, Finland. He has made significant contributions to the fields of electric drive devices and alkaline water electrolysis. With a total of 5 patents to his name, Niemelä's work focuses on enhancing the efficiency and functionality of various systems.

Latest Patents

One of Niemelä's latest patents is a method, an arrangement, and a frequency converter for the identification of torsional natural frequencies of a drivetrain system. This invention is particularly relevant to electric drive devices, drivetrain systems, and electric machines, such as electric motors and generators used in industrial applications. The arrangement includes a frequency converter and an electric machine controlled by it, which produces mechanical excitation in the drivetrain system. This excitation allows for the identification of torsional natural frequencies, improving the overall performance of the system.

Another significant patent by Niemelä is a system and method for alkaline water electrolysis. This system comprises electrolysis cells, hydrogen and oxygen separator tanks, and piping for conducting liquid electrolyte. An ultrasound source is integrated into the system to enhance the separation of dissolved hydrogen gas from the liquid electrolyte, thereby improving energy efficiency. This innovation broadens the safe control range of alkaline water electrolysis by reducing the crossover of hydrogen gas to the oxygen side of the system.

Career Highlights

Throughout his career, Markku Niemelä has worked with prominent companies such as ABB Schweiz AG and ABB Technology Oy. His experience in these organizations has contributed to his expertise in electric drive devices and electrolysis systems.

Collaborations

Niemelä has collaborated with notable colleagues, including Jero Ahola and Olli Liukkonen. These partnerships have likely enriched his work and led to further advancements in his field.

Conclusion

Markku Niemelä's innovative contributions to electric drive devices and alkaline water electrolysis demonstrate his commitment to advancing technology. His patents reflect a deep understanding of complex systems and a drive to improve energy efficiency.