| 摘要 |
#CMT# #/CMT# The method involves shaping current in an inductor by a control so that switching of transistors takes place by power supply of anti-parallel free wheeling diodes. Parasitic output capacitance of the transistors that are switched off, is charged on a value of voltages (U9, U10) lying between a positive terminal of a bridge section of the switched-on transistor and switched off transistor and reference potential. Complete discharge of the capacitance of the switched on transistors is implemented such that the diodes begin to conduct before the course of locking times (36, 40, 44). #CMT#USE : #/CMT# Method for switching loss minimum controlling of a bidirectional, non potential separated direct current-direct current converter i.e. buck-boost converter, that is utilized in a hybrid vehicle. #CMT#ADVANTAGE : #/CMT# The method avoids switching processes associated with increased switching losses and enables achieving of increased efficiency of energy deformation at increased clock frequency without extension of the switching fundamental structure. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a graphical representation illustrating time response of voltage of root point of a bridge section measured with respect to the reference potential and the characteristics of positive current in direction of the power transfer. UA, UB : Direct current voltage U9, U10 : Voltages 27 : Minimum current value 29-32 : Control signals 36, 40, 44 : Locking times. |
