Qing-Chang Zhong
Illinois Institute of Technology
279 Papers
1.5K Citations
Qing-Chang Zhong is an academic researcher from Illinois Institute of Technology. The author has contributed to research in topics: Control theory & AC power. The author has an hindex of 45, co-authored 279 publications. Previous affiliations of Qing-Chang Zhong include Hunan Institute of Engineering & University of Sheffield.
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Papers
Patent
SYNDEM converter—a power electronic converter with all voltage and current sensors connected to a common reference point
Qing-Chang Zhong
- 07 Nov 2019
TL;DR: In this article, the authors proposed a power electronic converter with a common reference point for the measurement of voltages and currents, making it possible to use non-isolated or isolated voltage and current sensors.
Robust stability analysis of simple control algorithms in communication networks
Qing-Chang Zhong
- 01 Sep 2003
TL;DR: This paper reveals that a simple method, the dual-locus diagram method, is very effective in analyzing the robust stability of simple time-delay systems, which are often met in communication systems.
Self-Synchronized Universal Droop Controller
TL;DR: A self-synchronization mechanism is embedded into the universal droop controller (UDC), which is applicable to inverters having an impedance angle between -π/2Rad and π/2 rad, to form a self- Synchronized UDC (SUDC).
The Ghost Operator and Its Applications to Reveal the Physical Meaning of Reactive Power for Electrical and Mechanical Systems and Others
TL;DR: It is proved that the ghost of a system behaves exactly in the opposite way as the original system, which leads to a significantly simplified instantaneous power theory called the ghost power theory.
Control of Ripple Eliminators to Improve the Power Quality of DC Systems and Reduce the Usage of Electrolytic Capacitors
TL;DR: An advanced controller on the basis of the repetitive control is proposed for one possible implementation of ripple eliminators in the continuous current mode (CCM) and it is shown that the proposed instantaneous ripple-current diversion in CCM leads to a nearly fourfold improvement of performance.