Title :
Dynamic Analysis of PWM Switching DC-DC Converters
Author :
Jian, Liu ; Yuanbin, Wang
Author_Institution :
Sch. of Electr. & Control Eng., Xi´´an Univ. of Sci. & Technol.
Abstract :
The dynamic behavior of DC-DC converters is analyzed on the basis of a state-space averaged model including the feed back loop. The low frequency ripple behavior of DC-DC converters is analyzed in s field. A buck DC-DC converter is used as an example. The condition causing oscillation and impulse during starting period and in case of input perturbation is obtained. The output to input voltage transfer function in the feedback loop is deduced. The stability requirement is obtained based on Hurwitz stability criterion. The frequency and amplitude of the low frequency ripple voltage are determined by using zero-pole analysis method. The proposed approach is verified by simulation and experiment results
Keywords :
DC-DC power convertors; PWM power convertors; feedback; stability criteria; switching convertors; transfer functions; zero assignment; Hurwitz stability criterion; PWM switching buck DC-DC converters; dynamic analysis; feed back loop; state-space averaged model; transfer function; zero-pole analysis; DC-DC power converters; Feeds; Frequency conversion; Frequency locked loops; Pulse width modulation; Pulse width modulation converters; Stability criteria; Switching converters; Transfer functions; Voltage; Pulse Width Modulation (PWM); dynamic analysis; low frequency ripple voltage; stability; switching converters;
Conference_Titel :
Power Electronics and Motion Control Conference, 2006. IPEMC 2006. CES/IEEE 5th International
Conference_Location :
Shanghai
Print_ISBN :
1-4244-0448-7
DOI :
10.1109/IPEMC.2006.4777989
