Hongqiang Qin

Title: Innovations of Hongqiang Qin

Introduction

Hongqiang Qin is a notable inventor based in Hangzhou, China. He has made significant contributions to the field of electrical engineering, particularly in the development of motor systems and resonant converters. With a total of four patents to his name, his work showcases innovative solutions aimed at improving efficiency and performance in electronic systems.

Latest Patents

One of his latest patents is the "BLDC motor system with reduced power loss and the initial rotation direction judging method thereof." This invention discusses a BLDC motor system that includes a power stage, a hall sensor, and a logical control circuit. The system enhances performance by determining the initial rotation direction through the back electromotive force generated by the stator, in conjunction with the induced signal sensed by the hall sensor.

Another significant patent is the "Resonant converter with capacitive mode detection and associated detection method." This invention utilizes a method of capacitive mode detection within a resonant converter. The resonant converter features a square wave generator with two switches, a resonant network, an isolated transformer, and a rectifier network that provides an output DC voltage for a load. The capacitive mode detection method involves detecting the voltage of the secondary winding, generating a voltage detection signal, and comparing it with a voltage detection threshold to determine if the resonant converter has entered a capacitive mode.

Career Highlights

Hongqiang Qin has worked with prominent companies in the industry, including Chengdu Monolithic Power Systems Co., Ltd. and Hangzhou MPS Semiconductor Technology Ltd. His experience in these organizations has allowed him to refine his skills and contribute to various innovative projects.

Collaborations

He has collaborated with notable colleagues such as Bairen Liu and Licheng Sheng, further enhancing the impact of his work in the field of electrical engineering.

Conclusion

Hongqiang Qin's contributions to the field of electrical engineering through his patents and collaborations highlight his innovative spirit and dedication to advancing technology. His work continues to influence the development of efficient electronic systems.