Long Wu

Title: Long Wu: A Prolific Inventor in Electric Machine Control

Introduction:

In the realm of electric machine control, Long Wu is a noteworthy figure with an impressive portfolio of 47 patents. Hailing from Fargo, ND (US), his groundbreaking inventions and contributions to the field have significantly impacted various industries. This article explores some of Long Wu's latest patents, his association with prominent organizations, and his collaborations with notable coworkers.

Patent 1: Inverter for controlling an electric machine without prior characterization:

One of Long Wu's recent patents involves the development of a control module integrated with software instructions for efficient electric machine control. This invention utilizes an inductance estimator to estimate direct and quadrature inductance, considering constant rotor resistance and magnetic flux. Additionally, the patented technology features a torque estimator to estimate rotor torque and a pulse-width-modulation (PWM) module for precise modulation signals to the electric machine. Furthermore, the invention utilizes a back-electromotive force adjustment derived from estimated and commanded torque.

Patent 2: System and method of a robust startup and stop scheme for position sensorless control of an electric machine:

Long Wu's ingenious invention focuses on the startup and stop scheme for sensorless control of electric machines. This patent introduces a system incorporating a speed estimator to determine the rotor speed and control the electric motor accordingly. By operating in different modes based on estimated speed, the invention effectively uses a current-frequency control mode and a back electromotive force (BEMF) mode. The utilization of an electronic data processor or controller enables seamless transitions between modes, ensuring efficient motor operation.

Professional Experience:

Long Wu has enriched his expertise through collaborations with esteemed organizations such as Deere & Company and the University of Nebraska. These associations have provided him with invaluable industry exposure, enabling him to refine his skills and stay at the forefront of innovation.

Collaborators:

Long Wu's works have also been influenced by collaboration with notable coworkers, including Robert B Shaw and Tianjun Fu. The collective impact of their contributions has propelled advancements in electric machine control, leading to improved efficiency and performance in a diverse range of applications.

Conclusion:

Long Wu's extensive patent portfolio and innovative contributions in the field of electric machine control exemplify his profound understanding of the subject matter. Through his expertise, collaborations, and affiliations with prominent organizations, Wu has played an instrumental role in revolutionizing this sector. His inventions have not only expanded the boundaries of electric machine control but also paved the way for future advancements in the industry.