Title :
Dual charge mode control of a current fed boost-buck push pull converter
Author :
Peterson, William A. ; Plaskon, Steven L.
Author_Institution :
Power & Drive Syst., Lockheed Martin, Johnson City, NY, USA
Abstract :
A control scheme is presented which allows control of a push-pull converter operating in boost and buck modes with seamless transformation between modes. Independent charge mode control on each leg of the push-pull converter allows one control scheme to be used for control in regions where the sensed current is both monotonically increasing (buck mode) and also where the current is not monotonically increasing (boost mode). With one error voltage, flux balance in the transformer is maintained over all operating modes. Experimental measurements are performed to verify the model.
Keywords :
DC-DC power convertors; electric current control; boost mode; buck mode; current fed boost-buck push pull converter; dual charge mode control; error voltage; independent charge mode control; monotonically increasing current; nonmonotonically increasing current; sensed current; transformer flux balance; Circuits; Cities and towns; Control systems; Inductors; Pulse transformers; Pulse width modulation; Pulse width modulation converters; Switches; Switching converters; Voltage control;
Conference_Titel :
Industry Applications Conference, 1998. Thirty-Third IAS Annual Meeting. The 1998 IEEE
Conference_Location :
St. Louis, MO, USA
Print_ISBN :
0-7803-4943-1
DOI :
10.1109/IAS.1998.730353
