Design of Approximate 2-Degree-of-Freedom Digital Controller for a Boost DC-DC Converter

2012 ◽  
Vol E95.C (11) ◽  
pp. 1810-1816
Author(s):  
Yoshihiro OHTA ◽  
Kohji HIGUCHI
Keyword(s):  
Degree Of Freedom ◽  
Digital Controller

Design of A2DOF Controller with Smith Predictor for LLC Current-Resonant DC-DC Converters

2015 ◽  
Vol 781 ◽  
pp. 422-426
Author(s):  
Tekehiro Suzuki ◽  
Kohji Higuchi ◽  
Kamon Jirasereeamornkul
Keyword(s):  
Delay Time ◽  
Experimental Studies ◽  
Smith Predictor ◽  
Degree Of Freedom ◽  
Input Delay ◽  
Digital Controller ◽  
Resonant Converters ◽  
Heavy Load ◽  
Non Linear ◽  
Sudden Load

LLC current-resonant converters have greater non-linear characteristics as compared to conventional DC-DC converters. Thus controlling LLC converters is difficult. In particular, the influence of an input delay time isn’t negligible at heavy load. In this paper, an A2DOF (Approximate 2-Degree-Of Freedom) controller with Simith predictor is proposed to compensate the input delay time of LLC current-resonant DC-DC converter. Experimental studies using a microprocessor for the controller demonstrate that this type of digital controller is effective to suppress the influences of the input delay time and the output variations at the sudden load change.

Current control of a PWM power amplifier by an approximate 2-degree-of-freedom digital controller

2009 ◽  
Vol 14 (3) ◽  
pp. 433-439 ◽  
Author(s):  
Keisuke Fujita ◽  
Kohji Higuchi ◽  
Kazushi Nakano ◽  
Koji Matsushita ◽  
Tatsuyoshi Kajikawa ◽  
...  
Keyword(s):  
Power Amplifier ◽  
Current Control ◽  
Degree Of Freedom ◽  
Digital Controller

Design of good approximate 2-degree-of-freedom digital controller for robust DC-DC converter

2005 ◽  
Author(s):  
K. Higuchi ◽  
K. Nakano ◽  
T. Kajikawa ◽  
E. Takegami ◽  
S. Tomioka ◽  
...  
Keyword(s):  
Degree Of Freedom ◽  
Digital Controller
Sign in / Sign up

Export Citation Format

Share Document