A new load flow algorithm effective under heavy load conditions

1980 ◽  
Vol 100 (5) ◽  
pp. 54-60 ◽  
Author(s):  
Shoichi Takeda ◽  
Atsushi Doi
Keyword(s):  
Load Flow ◽  
Heavy Load ◽  
Flow Algorithm ◽  
Load Conditions

Performance and computational requirements of new piecewise load flow algorithm

1979 ◽  
Vol 126 (6) ◽  
pp. 517
Author(s):  
G.J. Berg ◽  
P. Subramanian ◽  
K.R.C. Mamandur
Keyword(s):  
Load Flow ◽  
Flow Algorithm

scholarly journals Modeling a Dual-Mode Controller Design for a Quasi-Resonant Flyback Converter

2019 ◽  
Vol 9 (9) ◽  
pp. 1860
Author(s):  
Ching-Chun Chuang ◽  
Chih-Chiang Hua ◽  
Chong-Yu Huang ◽  
Li-Kai Jhou
Keyword(s):  
Controller Design ◽  
Circuit Simulation ◽  
Equivalent Circuit Model ◽  
Technological Advancement ◽  
Dual Mode ◽  
Heavy Load ◽  
Constant Frequency ◽  
Mode Control ◽  
Control Scheme ◽  
Load Conditions

The proposed system can overcome the disadvantage of a high peak current in quasi-resonant fly-back (QRF) converters when operated under heavy load conditions. The operating mode and control scheme of a QRF converter with dual-mode control were established and analyzed. The dual-mode control scheme not only enabled a valley-switching detection technique that satisfied the zero-voltage switching condition but also provided a constant frequency mechanism to reduce the conduction loss in QRF converters when operated in a continuous conduction mode and under heavy load conditions. The small-signal equivalent circuit model of QRF converter circuits was constructed using an average approximation method. The technological advancement of a QRF converter with a dual-mode controller was presented in this study. The circuit simulation result of the proposed QRF converter with a mix control scheme proved that the derived circuit component parameters meet the requirements of the converter.

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