Company Filing History:
Years Active: 2015-2017
Title: **Wai-Hei Choi: Innovator in Power Quality Control**
Introduction
Wai-Hei Choi is an accomplished inventor based in Macau, China, with a focus on innovations related to power quality compensation and signal control. He has been granted two patents reflecting his expertise and contributions to the field of electrical engineering.
Latest Patents
Choi's recent patents include a **Mixed Signal Controller** and an **Adaptive DC-Link Voltage Controlled LC Coupling Hybrid Active Power Filter for Reactive Power Compensation**.
The **Mixed Signal Controller** is designed for a power quality compensator and encompasses an analog circuit, an analog-to-digital converter (ADC), and a digital circuit. This invention works by amplifying an input signal from the power quality compensator and converting it into a digital signal through the ADC. The digital circuit calculates reference compensating currents and generates a trigger signal, adjusting system performance based on total harmonic distortion levels.
The **Adaptive DC-Link Voltage Controlled LC Coupling Hybrid Active Power Filter** features two DC capacitors for maintaining DC-link voltage and utilizes a three-phase voltage source inverter to produce compensating voltages. This innovation incorporates a reactive power compensation control algorithm that dynamically adjusts the reference DC-link voltage according to loading conditions, ensuring efficient reactive power compensation.
Career Highlights
Wai-Hei Choi is associated with the University of Macau, where he applies his engineering skills to research and innovate in the domain of electrical power systems. His work is characterized by a commitment to enhancing power quality and efficiency through advanced technological solutions.
Collaborations
Choi collaborates with esteemed colleagues such as Chi-Seng Lam and Man-Chung Wong, contributing to a productive research environment that fosters innovation and discovery in power systems and electrical engineering.
Conclusion
Wai-Hei Choi's contributions to the field of power quality control through his innovative patents underscore his role as a significant figure in electrical engineering. His work not only advances technology but also enhances the efficiency and effectiveness of power management systems, reflecting his dedication to improving electrical power quality for various applications.