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For the Inventor, By the Inventor

Dunlap, IL, United States of America

Dachuan Yu

USPTO Granted Patents = 14 

Average Co-Inventor Count = 2.7

ph-index = 4

Forward Citations = 78(Granted Patents)


Location History:

  • Peoria, IL (US) (2015)
  • Normal, IL (US) (2011 - 2017)
  • Dunlap, IL (US) (2017 - 2024)

Company Filing History:

goldMedal14 out of 9,440 
 
Caterpillar Inc.
 patents

Years Active: 2011-2025

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14 patents (USPTO):Explore Patents
1. 12424928 - Resistor-less pre-charging techniques (2025-09-23),
2. 12374888 - Voltage source inverter control for unbalanced and nonlinear loads (2025-07-29),
3. 12066502 - Open phase detection (2024-08-20),
4. 11894682 - Methods and systems for off-grid load stabilization of energy distribution systems (2024-02-06),
5. 11888334 - Methods and systems for charging or discharging energy storage systems (2024-01-30),
6. 10998732 - System and method for diverse multi-source energy management (2021-05-04),
7. 10146242 - Micro grid power system (2018-12-04),
8. 9906162 - Method to control three-phase inverter voltage (2018-02-27),
9. 9729008 - Life degradation mitigation for transient response energy storage (2017-08-08),
10. 9722445 - Control of hybrid energy storage system for high pulse load (2017-08-01),
11. 9042141 - Control of energy storage system inverter system in a microgrid application (2015-05-26),
12. 8987939 - Hybrid power system with variable speed genset (2015-03-24),
13. 8946915 - Adaptive variable speed genset control (2015-02-03),
14. 8068352 - Power inverter control for grid-tie transition (2011-11-29),

Title: Innovations of Inventor Dachuan Yu

Introduction

Dachuan Yu is a prominent inventor based in Dunlap, IL, known for his significant contributions to the field of electrical engineering. With a total of 14 patents to his name, he has developed innovative solutions that enhance the efficiency and performance of power conversion systems.

Latest Patents

One of Dachuan Yu's latest patents is focused on resistor-less pre-charging techniques. These techniques eliminate the need for a dedicated pre-charge resistor by utilizing the main power path of AC/DC, DC/DC, or DC/AC converters. By removing the pre-charge resistor, these methods increase the maximum allowable current rating of the converter while also enhancing its impedance and inductance. Another notable patent is related to voltage source inverter control for unbalanced and nonlinear loads. This invention includes an interface circuit that connects an energy source to a power bus of a microgrid. It features a switching inverter circuit, an output filter circuit, and a control circuit loop that manages the switching of the inverter circuit using a proportional-integral oscillator-based repetitive (PIOR) controller.

Career Highlights

Dachuan Yu is currently employed at Caterpillar Inc., where he applies his expertise in developing advanced power conversion technologies. His work has significantly impacted the efficiency of energy systems, making them more reliable and effective.

Collaborations

Dachuan has collaborated with notable colleagues such as Gregory J Speckhart and Mahesh Sitaram Illindala, contributing to various innovative projects within the company.

Conclusion

Dachuan Yu's inventive spirit and technical expertise have led to groundbreaking advancements in power conversion technologies. His contributions continue to shape the future of electrical engineering and energy systems.

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