DC/DC bridge control unit for controlling a direct-current load
AssigneeKone Corporation
InventorsPekka Jahkonen, Esa Putkinen
Life of this patent
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Abstract
A control unit of controlling a direct-current load (M1) includes a DC/DC bridge (B1) provided with controllable semiconductor switches (S21-S26) and having two bridge sections (B11, B12), one (B12) of which conducts direct current while the other one (B11) is controlled via PWM to regulate the current magnitude. The bridge section controlled via PWM includes two bridge arms (B111, B112).
Claims10
DC/DC bridge for controlling a direct-current load (M1), said bridge being provided with controllable semiconductor switch units (S21-S26) and having two bridge sections (B11, B12), one (B12) of which bridge sections conducts direct current while the other one (B11) is controlled via pulse-width modulation (PWM) to regulate the current magnitude,
- characterized in that
- the DC/DC bridge (B1) consists of three bridge arms
- two (B111, B112) of which arms are connected in parallel, and
- where the semiconductor switches in the parallel-connected bridge arms are controlled via PWM to form a PWM-controlled bridge section.
Dependencies are inferred from the claim text.