This inventor holds 2 USPTO granted patents and 2 EPO patents. Top assignees: Crrc Qingdao Sifang Rolling Stock Research Institute Co., Ltd., Crrc Qingdao Sifang Rolling Stock Research Institute Co., Ltd. (Cn). Active years: 2021.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
1 out of 26 
1 out of 5 Years Active: 2021
Title: Yongjie Mao: Innovator in EMU Control Strategies
Introduction
Yongjie Mao is a prominent inventor based in Qingdao, China. He has made significant contributions to the field of electrical engineering, particularly in the development of control strategies for electric multiple units (EMU). With a total of 2 patents, his work focuses on enhancing the reliability and efficiency of power systems.
Latest Patents
Yongjie Mao's latest patents include a "Synchronous soft-start networking control strategy for parallel auxiliary converters of EMU." This innovative strategy allows for the quick and reliable automatic networking of auxiliary converters during emergency traction modes. The method involves a fast networking logic that recognizes both first and non-first auxiliary converters, ensuring that the EMU can complete startup loading within specified time frames under various working conditions.
Another notable patent is the "Parallel control method and system for single-phase inverters and inverter." This invention addresses the challenges of controlling multiple single-phase inverters in parallel. It enables uninterrupted power supply by allowing other inverters to automatically take over the load in case of a fault, thus enhancing the reliability of the power supply system.
Career Highlights
Yongjie Mao has worked with Crrc Qingdao Sifang Rolling Stock Research Institute Co., Ltd., where he has contributed to various projects aimed at improving the performance of rolling stock systems. His expertise in control strategies has been instrumental in advancing the technology used in EMUs.
Collaborations
Yongjie has collaborated with notable colleagues such as Bo Zhang and Meiyun Li, contributing to a dynamic research environment that fosters innovation and development in the field of electrical engineering.
Conclusion
Yongjie Mao's contributions to the field of EMU control strategies and inverter systems highlight his role as a key innovator. His patents reflect a commitment to enhancing the reliability and efficiency of power systems, ensuring stable operations under various conditions.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile