Power supply apparatus, motor drive control method using the same and motor vehicle having the same mounted thereon
First Claim
1. A power supply apparatus (20) driving and controlling a motor (MG1, MG2), comprising:
- a DC power supply (10);
a converter (110) converting a first DC voltage (Vb) from said DC power supply into a second DC voltage (Vm) according to a voltage command value (Vmr) to output said second DC voltage between a first power supply line (103) and a second power supply line (102);
a chargeable and dischargeable electric charge storage unit (120) connected between said first power supply line and said second power supply line;
a motor drive control unit (131, 132) receiving said second DC voltage between said first power supply line and said second power supply line and converting, according to a driving force command vaiue (Tref), said second DC voltage into electric power for driving and controlling said motor; and
a control unit (140) adjusting, when said motor operates in a power running mode, said driving force command value to allow the sum of electric power (Pm) consumed by said motor according to said driving force command value and an amount of change (Pc) in stored electric power of said electric charge storage unit, said change being caused as said second DC voltage changes, to be smaller than a limiting value (Pcvlm) of electric power output from said converter.
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Accused Products
Abstract
A power supply apparatus driving and controlling motor generators (MG1, MG2) includes a battery (10) generating an input voltage (Vb), a converter (110) converting the input voltage into a motor operating voltage (Vm) according to a voltage command value (Vmr), a smoothing capacitor (120) holding the motor operating voltage, inverters (131, 132) receiving the motor operating voltage and driving and controlling the motor generators (MG1, MG2) according to a torque command value (Tref), and a control unit (15) generating the voltage command value and the torque command value. When the motor generators (MG1, MG2) operate in the power running mode, the control unit (15) operates to make the torque command value smaller than an original required torque as necessary so as to allow the sum of electric power (Pm) consumed by the motors and an amount of change (Pc) in stored electric power of the smoothing capacitor (120) caused as the motor operating voltage increases not to exceed an output electric power limiting value (Pcvlm) of the converter (110).
34 Citations
17 Claims
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1. A power supply apparatus (20) driving and controlling a motor (MG1, MG2), comprising:
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a DC power supply (10); a converter (110) converting a first DC voltage (Vb) from said DC power supply into a second DC voltage (Vm) according to a voltage command value (Vmr) to output said second DC voltage between a first power supply line (103) and a second power supply line (102); a chargeable and dischargeable electric charge storage unit (120) connected between said first power supply line and said second power supply line; a motor drive control unit (131, 132) receiving said second DC voltage between said first power supply line and said second power supply line and converting, according to a driving force command vaiue (Tref), said second DC voltage into electric power for driving and controlling said motor; and a control unit (140) adjusting, when said motor operates in a power running mode, said driving force command value to allow the sum of electric power (Pm) consumed by said motor according to said driving force command value and an amount of change (Pc) in stored electric power of said electric charge storage unit, said change being caused as said second DC voltage changes, to be smaller than a limiting value (Pcvlm) of electric power output from said converter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A motor drive and control method for driving and controlling a motor (MG1, MG2) by a power supply apparatus (20), said power supply apparatus including:
- a DC power supply (10);
a converter (110) converting a first DC voltage (Vb) from said DC power supply into a second DC voltage (Vm) according to a voltage command value (Vmr) to output said second DC voltage between a first power supply line (103) and a second power supply line (102);
a chargeable and dischargeable electric charge storage unit (120) connected between said first power supply line and said second power supply line; and
a motor drive control unit (131, 132) converting, according to a driving force command value (Tref), said second DC voltage between said first power supply line and said second power supply line into electric power for driving and controlling said motor,said method comprising a first step (S150) of adjusting, when said motor operates in a power running mode, said driving force command value to allow the sum of electric power (Pm) consumed by said motor according to said driving force command value and an amount of change (Pc) in stored electric power of said electric charge storage unit, said change being caused as said second DC voltage changes, to be smaller than a limiting value (Pcvlm) of electric power output from said converter. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
- a DC power supply (10);
Specification