Title :
Harmonic analysis of PWM switching power converter state variable in steady-state operation
Author :
Qiu, S.-S. ; Filanovsky, I.M.
Author_Institution :
South China Univ. of Technol., Guangzhou, China
Abstract :
A new method of analysis of the steady-state operation of PWM switching power converters is presented. The converter is modeled by a differential equation with periodical coefficients for the converter state variable. This differential equation is substituted by an equivalent system of linear differential equations with constant coefficients. Only the forced (steady-state) solutions are found for each equation of the obtained system. The final steady state solution for converter state variable is obtained as the sum of these forced solutions. A boost converter operating in discontinuous current mode is used as example to confirm the analytical results by numerical simulation
Keywords :
DC-DC power convertors; PWM power convertors; harmonic analysis; linear differential equations; nonlinear network analysis; power conversion harmonics; switching circuits; PWM switching power converter; boost converter; constant coefficients; differential equation; discontinuous current mode; forced solutions; harmonic analysis; linear differential equations; periodical coefficients; power converter state variable; steady-state operation; steady-state solutions; DC-DC power converters; Differential equations; Inductors; Matrix converters; Power system harmonics; Pulse width modulation; Pulse width modulation converters; Steady-state; Switches; Switching converters;
Conference_Titel :
Circuits and Systems, 1999. ISCAS '99. Proceedings of the 1999 IEEE International Symposium on
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-5471-0
DOI :
10.1109/ISCAS.1999.777540
