Vehicular power control apparatus
First Claim
1. A vehicular power control apparatus for performing power control of a hybrid vehicle using output of an internal combustion engine and output of an AC motor as sources of power, comprising:
- an internal combustion engine control unit to control the output of the internal combustion engine;
an electric power converter that is connected to the AC motor and a DC power supply to form, together therewith, an electric power supply passage, performs power conversion by a switching operation of a switching unit, and supplies electric power from one of the DC power supply and the AC motor to the other;
a hybrid control unit that has a function to control the output of the AC motor by controlling the switching operation of the electric power converter and cooperates with the internal combustion engine control unit to perform an arithmetical operation for the power control of the hybrid vehicle;
a short-circuit abnormality detection unit that is provided in the hybrid control unit and detects an abnormality due to a short circuit fault of the electric power supply passage; and
an internal combustion engine operation instruction unit that is provided in the hybrid control unit and gives, when the short-circuit abnormality detection unit detects the abnormality, an instruction, which causes the internal combustion engine to perform an operation corresponding to the abnormality, to the internal combustion engine control unit.
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Accused Products
Abstract
A protection operation control part switches a gate signal interruption switch for protection of power elements to a gate signal interruption side, and invalidates a switching signal from a hybrid control unit to place transistors into a nonconducting operation. A motor current signal from a motor current detector is converted into a current value by a motor current calculation unit, and is inputted to a short-circuit abnormality detection unit through a motor control arithmetic part, and a short-circuit abnormality is detected. At a time of detecting the short-circuit abnormality, an internal combustion engine operation instruction unit gives an instruction to an internal combustion engine control unit so as to limit output of an internal combustion engine, and releases a conduction state of an abnormal motor current.
85 Citations
9 Claims
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1. A vehicular power control apparatus for performing power control of a hybrid vehicle using output of an internal combustion engine and output of an AC motor as sources of power, comprising:
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an internal combustion engine control unit to control the output of the internal combustion engine;
an electric power converter that is connected to the AC motor and a DC power supply to form, together therewith, an electric power supply passage, performs power conversion by a switching operation of a switching unit, and supplies electric power from one of the DC power supply and the AC motor to the other;
a hybrid control unit that has a function to control the output of the AC motor by controlling the switching operation of the electric power converter and cooperates with the internal combustion engine control unit to perform an arithmetical operation for the power control of the hybrid vehicle;
a short-circuit abnormality detection unit that is provided in the hybrid control unit and detects an abnormality due to a short circuit fault of the electric power supply passage; and
an internal combustion engine operation instruction unit that is provided in the hybrid control unit and gives, when the short-circuit abnormality detection unit detects the abnormality, an instruction, which causes the internal combustion engine to perform an operation corresponding to the abnormality, to the internal combustion engine control unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification