Control loop interaction in parallel connected high frequency grid converters

Author(s):  
Blessy John ◽  
Arindam Ghosh
2012 ◽  
Vol 488-489 ◽  
pp. 1298-1301
Author(s):  
Xiong Xin Hu

In this paper, the running stability, the resonant frequency seeking ability of the novel HFFT (High frequency fatigue tester) control system are introduced. Firstly the HFFT control system model is developed. Secondly the HFFT control system dynamic characteristics is simulated and tested, which includes the dynamic load control loop and the frequency locked loop. Finally a experimental result is shown. Compare to the conventional PID control system, the novel tester’s dynamic characteristics are more preferable.


2021 ◽  
Vol 9 (2) ◽  
pp. 91-98
Author(s):  
Darya Stepanova

Hardware and software solutions for high-precision pointing tasks have found application in various fields of robotics. For mobile robots operating in extreme conditions, pointing of instruments, data transmission systems and navigation devices is a task of prime importance. Using the visual system as a feedback, it is possible to achieve pointing of aircraft embedded instruments with high accuracy. The issues of interest for this work on the development of a high-frequency guidance control loop and its implementation using the visual system as feedback remain relevant for research. In the course of this work, a study was carried out for the use of such systems. Based on the previously derived requirements for the system, the architecture of the pointing system was developed. Next, a variant of the control system implementation was investigated to achieve the required accuracy of instrument pointing. In addition, hardware solution was considered and a system model was built taking into account the mutual influence of the pointing system drives, and with a closed control loop.


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