Yi Li

Title: The Innovations of Yi Li

Introduction

Yi Li is an accomplished inventor based in Edinburgh, GB. He has made significant contributions to the field of electric motors and control systems, holding a total of 2 patents. His work focuses on enhancing the efficiency and functionality of brushless direct current motors.

Latest Patents

One of Yi Li's latest patents is for a "Sensorless brushless direct current (BLDC) motor position control." This invention describes circuits, systems, and methods for controlling the operation of brushless direct current motors that include multiple windings. The design features a gate driver that provides control signals to switching elements, which manage the voltage applied to each winding of the motor. A zero crossing detector identifies zero crossings of the voltage applied to the windings, transitioning a zero crossing signal between two logic levels based on these detections. Additionally, a position estimator calculates the angular position of the motor, counting in different directions based on the logic levels of the zero crossing signal. An observer then determines the counter value after a set time and generates an angular position signal based on this value.

Another notable patent is for an "Electric motor and electric generator." This invention comprises a stator with two coil sets designed to produce a magnetic field. Each coil set includes several coil sub-sets, and two control devices are employed to manage the current in these sub-sets. The control devices are arranged to create a magnetic field in each coil sub-set with a distinct magnetic phase compared to the other coil sub-sets, enhancing the motor's performance.

Career Highlights

Throughout his career, Yi Li has worked with several prominent companies, including Protean Electric Limited and Allegro Microsystems, LLC. His experience in these organizations has allowed him to refine his skills and contribute to innovative projects in the field of electric motors.

Collaborations

Yi Li has collaborated with notable professionals in his field, including Jonathan Richard Meyer and Rupert Paul Kirby. These partnerships have fostered a creative environment that has led to advancements in motor technology.

Conclusion

Yi Li's contributions to the field of electric motors and control systems are noteworthy. His innovative patents and collaborations reflect his commitment to advancing technology in this area. His work continues to influence the development of efficient motor systems.