DRIVING DEVICE

PROBLEM TO BE SOLVED: To more properly cope with an abnormality which occurs to a current sensor for detecting the current of a reactor in a step-up converter.SOLUTION: When an abnormality occurs to a current sensor for detecting the current of a reactor (S120), a target voltage VHtag of a driving v...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: KUROMATSU YUTAKA, YAMAKAWA JUNJI, YAMADA KATASHIGE
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:PROBLEM TO BE SOLVED: To more properly cope with an abnormality which occurs to a current sensor for detecting the current of a reactor in a step-up converter.SOLUTION: When an abnormality occurs to a current sensor for detecting the current of a reactor (S120), a target voltage VHtag of a driving voltage system is restricted with permissible maximum voltage VHlim2 which is lower than permissible maximum voltage VHlim1 when the abnormality does not occur to the current sensor to set a voltage instruction VH* of the driving voltage system (S160). A target duty ratio Duty* is set by feedback control using a voltage instruction VH* and a voltage (voltage of the driving voltage system) VH from a voltage sensor (S170). The step-up converter is controlled using the set target duty ratio Duty* (S180).