Lennart Harnefors

This inventor holds 20 USPTO granted patents and 6 published patent applications, plus 2 CIPO patents and 17 EPO patents, primarily in Power Converter Control. Top assignees: Abb Schweiz Ag, Abb Research Ltd., Abb Technology Ag. Active years: 2012-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Lennart Harnefors. Retrieved from https://idiyas.com/inventor/lennart-harnefors

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 20 (Patent Applications = 6)

% Patents Active = 90.0

CIPO Patents = 2

EPO Patents = 17 (Patent Applications = 28)

Average Co-Inventor Count = 2.1

ph-index = 4

Forward Citations = 62(Granted Patents)

Location History:

Ludvika, SE (2013)
Eskilstuna, SE (2012 - 2020)
Västerås, SE (2022 - 2023)

Company Filing History:

Hitachi Energy Switzerland Ag

where one patent can have more than one assignee

Years Active: 2012-2026

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Areas of Expertise:

Grid Frequency Control

Multi-Port Control

Buck Boost Converter

Voltage-Source Converter

Multilevel Converter

Active Damping

HVDC Link

Harmonics Reduction

Power Synchronization

Energy Storage

AC Motor Control

Snubber Components

20 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12560151 - Grid frequency control in an offshore wind farm (2026-02-24),

2. 12381398 - Grid forming vector current control (2025-08-05),

3. 11735928 - Multi-port grid forming control for grid interties (2023-08-22),

4. 11646653 - Switching circuit with snubber components (2023-05-09),

5. 11424679 - Buck boost converter cell for MMC (2022-08-23),

6. 11239764 - Voltage-source converter control system (2022-02-01),

7. 10770900 - Method and control system for controlling a voltage source converter using power-synchronization control (2020-09-08),

8. 10389129 - Method and control system for controlling a voltage source converter using power-synchronization control (2019-08-20),

9. 10270328 - Multilevel converter with energy storage (2019-04-23),

10. 10193469 - Multi-level power converter and a method for controlling a multi-level power converter (2019-01-29),

11. 10170914 - Voltage source converter (VSC) control system with active damping (2019-01-01),

12. 9531292 - Arrangement, method and computer program product concerned with tapping of power from a DC power line to an AC power line (2016-12-27),

13. 9461473 - Method and apparatus for damping oscillations in a power system (2016-10-04),

14. 9190932 - Method and device for controlling a multilevel converter (2015-11-17),

15. 8564981 - Modular multi-level power converter with second and third order harmonics reduction filter (2013-10-22),

Title: Lennart Harnefors - Innovative Inventor from Eskilstuna

Introduction: Lennart Harnefors is a renowned inventor hailing from Eskilstuna, Sweden, known for his groundbreaking contributions to various fields of technology.

Latest Patents: Lennart Harnefors holds several patents in the areas of renewable energy, sustainable transportation, and advanced materials, showcasing his commitment to creating a more environmentally friendly world.

Career Highlights: With a career spanning over two decades, Lennart Harnefors has worked with leading research institutions and companies to develop cutting-edge solutions that have revolutionized industries such as automotive, aerospace, and energy.

Collaborations: Throughout his career, Lennart Harnefors has collaborated with top engineers, scientists, and designers to bring his innovative ideas to life. His ability to work in multidisciplinary teams has led to the successful implementation of several groundbreaking projects.

Conclusion: Lennart Harnefors' passion for innovation and his dedication to creating sustainable technologies have solidified his reputation as a visionary inventor in the global tech community.

Profile summary based on public USPTO records.