초록 ▼

A matrix converter (38) converts three-phase AC power input from a first motor-generator (MG1) directly to three-phase AC power for driving a second motor-generator (MG2) and outputs the resultant three-phase AC power, without rectifying the three-phase AC power generated by the first motor-generato

A matrix converter (38) converts three-phase AC power input from a first motor-generator (MG1) directly to three-phase AC power for driving a second motor-generator (MG2) and outputs the resultant three-phase AC power, without rectifying the three-phase AC power generated by the first motor-generator (MG1) once to DC power as in an example using a conventional three-phase full-wave rectification inverter. In a power supply system for a vehicle (14), the three-phase AC power is transmitted and received between two motor-generators (MG1, MG2) more directly, by means of the matrix converter (38). Therefore, power loss can be reduced, as compared with a conventional example in which the three-phase AC power is once converted to DC power. Thus, a power supply system for a vehicle with improved energy efficiency and a vehicle including the same can be provided.

대표청구항 ▼

The invention claimed is: 1. A power supply system for a vehicle, comprising: a first rotating electric machine capable of generating first m-phase AC power upon receiving mechanical power from an internal combustion engine, where m represents a natural number which is at least 3; a second rotating

The invention claimed is: 1. A power supply system for a vehicle, comprising: a first rotating electric machine capable of generating first m-phase AC power upon receiving mechanical power from an internal combustion engine, where m represents a natural number which is at least 3; a second rotating electric machine driving a wheel upon receiving second m-phase AC power equal to said first m-phase AC power in number of phases; a matrix converter converting said first m-phase AC power and outputting resultant AC power as at least a portion of said second m-phase AC power, said matrix converter including m×m switching elements connected between each of m-phase outputs of said first rotating electric machine and each of m-phase inputs of said second rotating electric machine; a battery; an inverter converting DC power obtained from said battery and outputting resultant power as at least a portion of said second m-phase AC power; a first switch electrically connecting said battery to said inverter; and a control unit controlling power conversion by said matrix converter and controlling opening and closing of said first switch in association with a state of power conversion by said matrix converter. 2. The power supply system for a vehicle according to claim 1, wherein said switching element includes a reverse-blocking-type insulated gate bipolar transistor. 3. The power supply system for a vehicle according to claim 1, further comprising: a second switch electrically connecting said matrix converter to said second rotating electric machine; and a socket connected between said second switch and said matrix converter and outputting single-phase AC power. 4. The power supply system for a vehicle according to claim 1, further comprising a third switch electrically connecting said matrix converter to said first rotating electric machine; and a socket connected between said third switch and said matrix converter and receiving single-phase AC power from outside of the vehicle. 5. A vehicle comprising a power supply system for a vehicle, wherein said power supply system for a vehicle includes: a first rotating electric machine capable of generating first m-phase AC power upon receiving mechanical power from an internal combustion engine, where m-phase represents a natural number which is at least 3, a second rotating electric machine driving a wheel upon receiving second m phase AC power equal to said first m-phase AC power in number of phases, and a matrix converter converting said first m-phase AC power and outputting resultant AC power as at least a portion of said second m-phase AC power, said matrix converter includes m×m switching elements connected between each of m-phase outputs of said first rotating electric machine and each of m-phase inputs of said second rotating electric machine, and said vehicle further includes a battery; an inverter converting DC power obtained from said battery and outputting resultant power as at least a portion of said second m-phase AC power; a first switch electrically connecting said battery to said inverter; and a control unit controlling power conversion by said matrix converter and controlling opening and closing of said first switch in association with a state of power conversion by said matrix converter. 6. The vehicle according to claim 5, wherein said switching element includes a reverse-blocking-type insulated gate bipolar transistor. 7. The vehicle according to claim 5, further comprising: a second switch electrically connecting said matrix converter to said second rotating electric machine; and a socket connected between said second switch and said matrix converter and outputting single-phase AC power. 8. The vehicle according to claim 5, further comprising: a third switch electrically connecting said matrix converter to said first rotating electric machine; and a socket connected between said third switch and said matrix converter and receiving single-phase AC power from outside of the vehicle. 9. A power supply system for a vehicle, comprising: a first rotating electric machine capable of generating first m-phase AC power upon receiving mechanical power from an internal combustion engine, where m represents a natural number which is at least 3; a second rotating electric machine driving a wheel upon receiving second m-phase AC power equal to said first m-phase AC power in number of phases; a matrix converter converting said first m-phase AC power and outputting resultant AC power as at least a portion of said second m-phase AC power, said matrix converter including m×m switching elements connected between each of m-phase outputs of said first rotating electric machine and each of m-phase inputs of said second rotating electric machine; a battery; an inverter converting DC power obtained from said battery and outputting resultant power as at least a portion of said second m-phase AC power; and a control unit controlling power conversion by said matrix converter and controlling said inverter in association with a state of power conversion by said matrix converter. 10. The power supply system for a vehicle according to claim 9, wherein said switching element includes a reverse-blocking-type insulated gate bipolar transistor. 11. The power supply system for a vehicle according to claim 9, further comprising: a second switch electrically connecting said matrix converter to said second rotating electric machine; and a socket connected between said second switch and said matrix converter and outputting single-phase AC power. 12. The power supply system for a vehicle according to claim 9, further comprising a third switch electrically connecting said matrix converter to said first rotating electric machine; and a socket connected between said third switch and said matrix converter and receiving single-phase AC power from outside of the vehicle. 13. A vehicle comprising a power supply system for a vehicle, wherein said power supply system for a vehicle includes: a first rotating electric machine capable of generating first m-phase AC power upon receiving mechanical power from an internal combustion engine, where m-phase represents a natural number which is at least 3, a second rotating electric machine driving a wheel upon receiving second m phase AC power equal to said first m-phase AC power in number of phases, and a matrix converter converting said first m-phase AC power and outputting resultant AC power as at least a portion of said second m-phase AC power, said matrix converter includes m×m switching elements connected between each of m-phase outputs of said first rotating electric machine and each of m-phase inputs of said second rotating electric machine, and said vehicle further includes a battery; an inverter converting DC power obtained from said battery and outputting resultant power as at least a portion of said second m-phase AC power; and a control unit controlling power conversion by said matrix converter and controlling said inverter in association with a state of power conversion by said matrix converter. 14. The vehicle according to claim 13, wherein said switching element includes a reverse-blocking-type insulated gate bipolar transistor. 15. The vehicle according to claim 13, further comprising: a second switch electrically connecting said matrix converter to said second rotating electric machine; and a socket connected between said second switch and said matrix converter and outputting single-phase AC power. 16. The vehicle according to claim 13, further comprising a third switch electrically connecting said matrix converter to said first rotating electric machine; and a socket connected between said third switch and said matrix converter and receiving single-phase AC power from outside of the vehicle.