Bridge rectifier circuit
AssigneeMitsubishi Electric Corporation
InventorsTetsushi WATANABE, Masaaki Taruya
Life of this patent
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Abstract
A bridge rectifier circuit, which takes control of a current flowing through an armature winding of a motor-generator and a battery, includes rectifier elements each made of a MOSFET; phase current detection means that detect the amount and the direction of current flowing between the drain and the source of the FET; and a control means that takes on/off control of the FET by applying a control voltage between the gate and the source thereof; wherein when the phase current detection means detect a reverse current flowing through the FET exceeding a first predetermined value, the control means applies a control voltage between the gate and the source of the FET so as to turn on the FET.
Claims2
A bridge rectifier circuit electrically connected between a battery and a motor-generator having an armature winding and a field winding, for taking control of a current flowing through the armature winding and the battery, the bridge rectifier circuit comprising:
- rectifier elements each made of a MOSFET;
- phase current detection means for detecting the amount and the direction of current flowing between a drain and a source of the FET;
- and
- a control means for taking on/off control of the FET by applying a control voltage between a gate and the source of the FET;
- wherein
- when the phase current detection means detect a reverse current flowing through the FET exceeding a first predetermined value, the control means applies a control voltage between the gate and the source of the FET so as to turn on the FET.
Dependencies are inferred from the claim text.