An Optimal Current Observer for Predictive Current Controlled Buck DC-DC Converters
نویسندگان
چکیده
منابع مشابه
An Optimal Current Observer for Predictive Current Controlled Buck DC-DC Converters
In digital current mode controlled DC-DC converters, conventional current sensors might not provide isolation at a minimized price, power loss and size. Therefore, a current observer which can be realized based on the digital circuit itself, is a possible substitute. However, the observed current may diverge due to the parasitic resistors and the forward conduction voltage of the diode. Moreove...
متن کاملOffset-free adaptive nonlinear model predictive control with disturbance observer for DC-DC buck converters
The aim of this paper is to design a nonlinear model predictive control for DC-DC buck converters to track constant reference signals with zero steady-state error. The online trained neural network (NN) model is employed as the predictor and the steady-state error, which is called the offset, is studied in the presence of the changes in system parameters and the external disturbances. The stabi...
متن کاملExistence of horseshoe maps in current-mode controlled buck-boost dc/dc converters
In this paper, a buck-boost dc/dc converter under a typical current-mode control is studied. The existence of chaos is proven theoretically in this system. The proof consists of showing that the dynamics of the system is semiconjugate to that of the one-sided shift map, which implies positive entropy of the system and hence chaotic behavior. The essential tool is the horseshoe hypotheses propos...
متن کاملCurrent-Sensing Techniques for DC-DC Converters
Current sensing is one of the most important functions on a smart power chip. Conventional current-sensing methods insert a resistor in the path of the current to be sensed. This method incurs significant power losses, especially when the current to be sensed is high. Lossless current-sensing methods address this issue by sensing the current without dissipating the power that passive resistors ...
متن کاملBenchmark: DC-to-DC Switched-Mode Power Converters (Buck Converters, Boost Converters, and Buck-Boost Converters)
Power electronics represent a large and important class of hybrid systems, as modern digital computers and many other systems rely on their correct operation. In this benchmark description, we model three DC-toDC switched-mode power converters as hybrid automata with continuous dynamics specified by linear ordinary differential equations. A DC-toDC converter transforms a DC source voltage from ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Sensors
سال: 2014
ISSN: 1424-8220
DOI: 10.3390/s140508851