Company Filing History:
Years Active: 1976-1977
Title: Innovations by David James Gritter
Introduction
David James Gritter is an accomplished inventor based in Elmhurst, IL (US). He has made significant contributions to the field of electrical engineering, particularly in the development of induction generator systems. With a total of 4 patents to his name, Gritter's work showcases his innovative approach to solving complex engineering challenges.
Latest Patents
Gritter's latest patents include a "Three-phase, quasi-square wave VSCF induction generator system." This invention features a plural switch matrix that acts as a direct AC-to-DC converter between an induction generator and an AC load. The generator produces three-phase output energy, which is managed by the converter to deliver a controlled three-phase quasi-square wave voltage to the load. The converter's switching mechanism creates periodic shorts across the generator terminals, converting some mechanical input energy into electrical energy to maintain the generator field. The regulation of the converter is achieved through gating signals from a combinational logic circuit.
Another notable patent is the "Excitation system for multi-phase induction generator." This patent provides a comprehensive discussion on induction machine equivalent circuits, including their operation as induction generators. It describes the selective shorting of machine terminals to convert mechanical input energy into electrical field energy. The system includes methods for achieving selective shorting with a single-phase machine, ensuring that shorting occurs at the right moment to replenish the field. The duration of the shorting can be adjusted based on the load, and a three-phase shorting circuit is also detailed.
Career Highlights
David James Gritter is currently employed at BorgWarner Inc., where he continues to innovate and contribute to advancements in electrical engineering. His work at the company reflects his commitment to developing efficient and effective energy solutions.
Collaborations
Gritter collaborates with George H. Studtmann, leveraging their combined expertise to push the boundaries of technology in their field.
Conclusion
David James Gritter's innovative patents and contributions to the field of electrical engineering highlight his role as a significant inventor. His work continues to influence the development of induction generator systems, showcasing the importance of innovation in engineering.