Title :
Utilization of a series resonant DC link for a DC motor drive
Author :
Aydemir, M.T. ; Caldeira, P. ; Lipo, T.A. ; Murai, Y. ; Da Silva, Edison R C ; Ledwich, Gerard
Author_Institution :
Dept. of Electr. & Comput. Eng., Wisconsin Univ., Madison, WI, USA
Abstract :
A high-frequency series resonant DC link converter is utilized as a DC motor drive. This system generates a resonant current in a series link, and switching is done at zero current instants, reducing switching losses to a minimum value. A pulse density modulation (PDM) strategy, utilizing a current rectangular loop and an external motor speed feedback loop, controls the resonant converter. A sinusoidal input fundamental current and nearly unity input power factor can be observed in different load conditions. The overall characteristics of the system, including such variables as maximum power, input current, start up, and transient responses, are presented by digital simulation and were verified on an actual prototype system
Keywords :
DC motors; digital simulation; electric current control; electric drives; feedback; power convertors; power engineering computing; pulse modulation; switching; velocity control; DC link converter; DC motor drive; current rectangular loop; digital simulation; external motor speed feedback loop; high-frequency; input current; maximum power; nearly unity input power factor; pulse density modulation; series resonant DC link; start up; switching; switching losses reduction; transient responses; zero current instants; DC motors; Frequency conversion; Power semiconductor switches; RLC circuits; Resonance; Resonant frequency; Switching converters; Switching loss; Thyristors; Voltage control;
Journal_Title :
Industry Applications, IEEE Transactions on
