| 摘要 |
#CMT# #/CMT# The method involves controlling identical converter units (2) by pulse width-modulated control signals. Ripple current is generated by the converter units, where the signals comprise same frequency. A phase position of the control signals is adjusted. The phase position of the control signals is determined, where amplitude of sum of the ripple current is small at a temporal average. The converter units are controlled by the determined phase position of the control signals, where representative pulse vectors represent the amplitude and the phase position of the ripple current of the units. #CMT# : #/CMT# An independent claim is also included for a phase angle adjuster for minimizing ripple currents in a direct current converter. #CMT#USE : #/CMT# Method for minimizing ripple currents in a direct current converter e.g. step-up converter, step-down converter or step-up-step-down converter e.g. rotational speed controller for direct current motor, battery charging device or adjustable voltage source, for stabilizing alternating current voltages. #CMT#ADVANTAGE : #/CMT# The converter units are controlled by the determined phase position of the control signals, thus reducing residual ripple of output voltage of the direct current converter. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a block diagram of a structure of a multi-phase converter with a phase angle adjuster. '(Drawing includes non-English language text)' 1 : Direct current converter 2 : Converter units 7, 8 : Operating voltage connections 10 : Filter arrangement 13 : Phase angle adjuster. |
