Power output apparatus, motor driving method and computer-readable recording medium having program recorded thereon for allowing computer to execute motor drive control
First Claim
1. A power output apparatus comprising:
- a first inverter;
a second inverter;
a 2Y motor having a first three-phase motor coil and a second three-phase motor coil functioning as stators, energization of said first and second three-phase motor coils being controlled respectively by said first and second inverters;
a power supply connected between a first neutral point of said first three-phase motor coil and a second neutral point of said second three-phase motor coil; and
an electric motor which is different from said 2Y motor.
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Accused Products
Abstract
A power output apparatus includes two motor generators, a DC power supply, a relay, three inverters and a control CPU. One of the motor generators includes three-phase coils. The DC power supply is connected via the relay between respective neutral points of the three-phase coils. When the sum of respective powers of the motor generators is zero, the control CPU generates a signal SE at L level for rendering the relay OFF to output the generated signal to the relay, and generates signals PWMC1, PWMC2 and PWMI3 for driving the other motor generator by electric power generated by the one motor generator to output the generated signals to the inverters respectively.
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Citations
12 Claims
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1. A power output apparatus comprising:
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a first inverter;
a second inverter;
a 2Y motor having a first three-phase motor coil and a second three-phase motor coil functioning as stators, energization of said first and second three-phase motor coils being controlled respectively by said first and second inverters;
a power supply connected between a first neutral point of said first three-phase motor coil and a second neutral point of said second three-phase motor coil; and
an electric motor which is different from said 2Y motor. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A motor driving method for driving a 2Y motor coupled to an internal combustion engine of a hybrid vehicle and an electric motor coupled to drive wheels of said hybrid vehicle, comprising:
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a first step of calculating a first power of said 2Y motor and a second power of said electric motor;
a second step of determining whether the sum of said calculated first power and said calculated second power is zero or not; and
a third step of disconnecting, when said sum is equal to zero, a power supply from respective neutral points of two three-phase coils included in said 2Y motor. - View Dependent Claims (8, 9)
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10. A computer-readable recording medium having a program recorded thereon for allowing a computer to execute drive control of a 2Y motor coupled to an internal combustion engine of a hybrid vehicle and an electric motor coupled to drive wheels of said hybrid vehicle, said computer following said program to execute:
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a first step of calculating a first power of said 2Y motor and a second power of said electric motor;
a second step of determining whether the sum of said calculated first power and said calculated second power is zero or not; and
a third step of disconnecting, when said sum is equal to zero, a power supply from respective neutral points of two three-phase coils included in said 2Y motor. - View Dependent Claims (11, 12)
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Specification