Sign in Subscribe
Renewable energy

Breakthrough Patent for Dynamic Stability Control of Power Systems with Renewable Energy

Strategic Insights

— 1 min read

A team of inventors from Zhejiang University has developed a groundbreaking patent for dynamic stability control of power systems with renewable energy, addressing the pressing issue of extreme weather conditions and the need to reduce fossil energy consumption and carbon emission. The patent, filed on October 23, 2024, and published online on August 19, 2025, presents a method and system for enhancing dynamic stability of power systems with renewable energy through modifying a voltage instruction value of an inverter.

Key Takeaways:

  • The patent provides a method and system for dynamic stability control of power systems with renewable energy, comprising creating a non-linear system of a grid-forming inverter, constructing an external subsystem based on a Lie derivative, and generating a dynamic stability control unit based on sliding mode control.
  • The method involves creating at least three control loops corresponding to the non-linear system of the grid-forming inverter, constructing an inner loop current controller, and obtaining a voltage reference value data and a power angle variation data.
  • The positive sequence and fundamental frequency model of the grid-forming inverter is expressed as a non-linear single-input single-output (SISO) model, which is used to generate a first instruction data for controlling dynamic stability of the renewable energy power system in real time.
  • The patent addresses the urgent need to design and develop a method and system for dynamic stability control of power systems with renewable energy, as current power system stabilizers are not fully applicable to inverters.
  • The inventors' summary states that the method and system provide a solution for dynamic stability control of power systems with renewable energy, enhancing dynamic stability and addressing the technical defects of prior art.

Statistics:

  • The patent was filed on October 23, 2024.
  • The patent was published online on August 19, 2025.
  • The inventors include Huang Ying, Li Yan, Liu Wentao, Tang Wangqianyun, Wang Guoteng, Xu Zheng, Zhang Ye, and Zhou Baorong from Zhejiang University.
  • The patent number is 12394990.
  • The keyword categories include Oil & Gas, Climate Change, Global Warming, Greenhouse Gases, Renewable Energy, and Zhejiang University.

Sources:

  • Huang, Ying. Method and system for dynamic stability control of power systems with renewable energy. U.S. Patent Number 12394990, filed October 23, 2024, and published online on August 19, 2025.
  • Patent URL (for desktop use only): https://ppubs.uspto.gov/pubwebapp/external.html?q=(12394990)&db=USPAT&type=ids

Read more