Title :
Dynamics and control of DC-to-DC converters driving other converters downstream
Author :
Choi, Byungcho ; Cho, Bo H. ; Hong, Sung-Soo
Author_Institution :
Dept. of Electron. & Electr. Eng., Kyungpook Nat. Univ., Taegu, South Korea
fDate :
10/1/1999 12:00:00 AM
Abstract :
This paper reveals that the dynamics of a converter loaded with other converters downstream are markedly different from those of a standalone converter and conventional design techniques developed for converters with a resistive load could destabilize the control loop of converters combined with other converters. Based on comprehensive small-signal analyses, this paper presents the proper way of designing the control loop of converters driving other converters downstream. The analysis and design results are verified by both time- and frequency-domain simulations
Keywords :
Bode diagrams; DC-DC power convertors; PWM power convertors; compensation; power supply quality; power system dynamic stability; step response; transfer functions; Bode diagram; DC-DC converters; PWM converters; boost-derived; buck-derived; cascaded stages; control loop design; current-loop closed power stage; distributed power systems; driving other converters downstream; dynamics analysis; frequency-domain simulation; line conditioner; open-loop power stage; small-signal analyses; stability; step response; time-domain simulation; transfer function; voltage feedback compensation; Analytical models; Control design; DC-DC power converters; Frequency; Impedance; Power system dynamics; Power system simulation; Power system stability; Pulse width modulation converters; Voltage;
Journal_Title :
Circuits and Systems I: Fundamental Theory and Applications, IEEE Transactions on
