POWER DRIVE CONTROL DEVICE AND POWER DEVICE
First Claim
1. A power drive control device comprising:
- a first controller operable to input a current signal of a fixed winding of a synchronous motor and a sense output from a rotation angle sensor of the synchronous motor, and operable to perform drive control for rotating the synchronous motor and regenerative control for controlling power generation by the synchronous motor; and
a second controller operable to input a current signal of a fixed winding of a synchronous generator and a sense output from a rotation angle sensor of the synchronous generator, and operable to perform power generation control for controlling power generation by the synchronous generator,wherein, when it is detected that the first controller has unusable failure in the drive control of the synchronous motor, the second controller performs instead all or a part of the drive control to be performed by the first controller.
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Accused Products
Abstract
A power drive control device is provided, in which, even if drive of a synchronous motor becomes impossible due to abnormalities of a control circuit for controlling the synchronous motor, it is possible to perform the drive control of the synchronous motor concerned easily with a simple configuration as emergency action. Failure of one of a first controller and a second controller is recovered by configuration of the other. Here, the first controller performs rotational drive control and regenerative control of a synchronous motor, based on a current signal of a fixed winding of the synchronous motor and a sense output from a rotation angle sensor of the synchronous motor, and the second controller performs power generation control of a synchronous generator based on a current signal of a fixed winding of the synchronous generator and a sense output from a rotation angle sensor of the synchronous generator. The drive control and the regenerative control (power generation control) which are performed by the first controller for controlling the synchronous motor and the second controller for controlling the synchronous generator are inextricably linked control.
24 Citations
29 Claims
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1. A power drive control device comprising:
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a first controller operable to input a current signal of a fixed winding of a synchronous motor and a sense output from a rotation angle sensor of the synchronous motor, and operable to perform drive control for rotating the synchronous motor and regenerative control for controlling power generation by the synchronous motor; and a second controller operable to input a current signal of a fixed winding of a synchronous generator and a sense output from a rotation angle sensor of the synchronous generator, and operable to perform power generation control for controlling power generation by the synchronous generator, wherein, when it is detected that the first controller has unusable failure in the drive control of the synchronous motor, the second controller performs instead all or a part of the drive control to be performed by the first controller. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A power drive control device comprising:
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a first controller operable to input a current signal of a fixed winding of a synchronous motor and a sense output from a rotation angle sensor of the synchronous motor, and operable to perform drive control for rotating the synchronous motor and regenerative control for controlling power generation by the synchronous motor; and a second controller operable to input a current signal of a fixed winding of a synchronous generator and a sense output from a rotation angle sensor of the synchronous generator, and operable to perform power generation control for controlling power generation by the synchronous generator, wherein the first controller and the second controller are respectively a first microcomputer and a second microcomputer, each provided with a different CPU, wherein the first microcomputer comprises multiplexed A/D conversion circuits which convert a current signal of the fixed winding of the synchronous motor into a digital signal, wherein, when a main A/D conversion circuit is in failure, an auxiliary A/D conversion circuit is switched so as to act as a substitute and converts a current signal of the fixed winding of the synchronous motor into a digital signal, wherein the first microcomputer comprises an angle conversion circuit which inputs a sense output from the rotation angle sensor of the synchronous motor and converts the sense output into angle data, and wherein, when the angle conversion circuit is in failure, the first microcomputer performs the drive control of the synchronous motor, by estimating a rotational position and speed of the synchronous motor based on the digital signal into which the A/D conversion circuit has converted the current signal of the fixed winding of the synchronous motor.
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19. A power device comprising:
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a synchronous motor; a first switching circuit operable to perform an inverter switch operation to generate a driving current to a fixed winding of the synchronous motor, and a rectifier switch operation to rectify a regenerative current from the fixed winding of the synchronous motor; a rotation angle sensor of the synchronous motor; a first controller operable to input a current signal of the fixed winding of the synchronous motor and a sense output from the rotation angle sensor of the synchronous motor, operable to output an inverter switch control signal for the inverter switch operation to the first switching circuit in response to a drive command of the synchronous motor, and operable to output a rectifier switch control signal for the rectifier switch operation to the first switching circuit in response to a regeneration command of the synchronous motor; a synchronous generator; a second switching circuit operable to perform a rectifier switch operation to rectify current from a fixed winding of the synchronous generator; a rotation angle sensor of the synchronous generator; and a second controller operable to input a sense signal of the rotation angle sensor of the synchronous generator and a current signal from the fixed winding of the synchronous generator, and operable to output a rectifier switch control signal for the rectifier switch operation to the second switching circuit in response to a power generation command of the synchronous generator, wherein, when it is detected that the first controller has unusable failure in the drive control of the synchronous motor, the second controller performs instead all or a part of the drive control to be performed by the first controller. - View Dependent Claims (20, 21, 22, 23, 24)
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25. A power device comprising:
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a synchronous motor; a first switching circuit operable to perform an inverter switch operation to generate a driving current to a fixed winding of the synchronous motor, and a rectifier switch operation to rectify a regenerative current from the fixed winding of the synchronous motor; a rotation angle sensor of the synchronous motor; a first controller operable to input a current signal of the fixed winding of the synchronous motor and a sense output from the rotation angle sensor of the synchronous motor, operable to output an inverter switch control signal for the inverter switch operation to the first switching circuit in response to a drive command, and operable to output a rectifier switch control signal for the rectifier switch operation to the first switching circuit in response to a regeneration command; a synchronous generator; a second switching circuit operable to perform a rectifier switch operation to rectify current from a fixed winding of the synchronous generator; a rotation angle sensor of the synchronous generator; and a second controller operable to input a sense signal of the rotation angle sensor of the synchronous generator and a current signal from the fixed winding of the synchronous generator, and operable to output a rectifier switch control signal for the rectifier switch operation to the second switching circuit in response to a power generation command, wherein the first controller and the second controller are respectively a first microcomputer and a second microcomputer, each provided with a different CPU, wherein the first microcomputer comprises multiplexed A/D conversion circuits which convert a current signal of the fixed winding of the synchronous motor into a digital signal, wherein, when a main A/D conversion circuit is in failure, an auxiliary A/D conversion circuit is switched so as to act as a substitute and converts a current signal of the fixed winding of the synchronous motor into a digital signal, wherein the first microcomputer comprises an angle conversion circuit which inputs a sense output from the rotation angle sensor of the synchronous motor and converts the sense output into angle data, and wherein, when the angle conversion circuit is in failure, the first microcomputer performs drive control of the synchronous motor, by estimating a rotational position and speed of the synchronous motor based on the digital signal into which the A/D conversion circuit has converted the current signal of the fixed winding of the synchronous motor.
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26. A power drive control device comprising:
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a first controller operable to input a current signal of a fixed winding of a synchronous motor and a sense output from a rotation angle sensor of the synchronous motor, and operable to perform drive control for rotating the synchronous motor and regenerative control for controlling power generation by the synchronous motor; and a second controller operable to input a current signal of a fixed winding of a synchronous generator and a sense output from a rotation angle sensor of the synchronous generator, and operable to perform power generation control for controlling power generation by the synchronous generator, wherein, when it is detected that the second controller has unusable failure in the power generation control of the synchronous generator, the first controller performs instead all or a part of the power generation control of the synchronous generator to be performed by the second controller.
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27. A power drive control device comprising:
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a first controller operable to input a current signal of a fixed winding of a synchronous motor and a sense output from a rotation angle sensor of the synchronous motor, and operable to perform drive control for rotating the synchronous motor and regenerative control for controlling power generation by the synchronous motor; and a second controller operable to input a current signal of a fixed winding of a synchronous generator and a sense output from a rotation angle sensor of the synchronous generator, and operable to perform power generation control for controlling power generation by the synchronous generator, wherein the first controller and the second controller are respectively a first microcomputer and a second microcomputer, each provided with a different CPU, wherein the second microcomputer comprises multiplexed A/D conversion circuits which convert the current signal into a digital signal, wherein, when a main A/D conversion circuit is in failure, an auxiliary A/D conversion circuit is switched so as to act as a substitute and converts the current signal into a digital signal, wherein the second microcomputer comprises an angle conversion circuit which inputs a sense output from the rotation angle sensor of the synchronous generator and converts the sense output into angle data, and wherein, when the angle conversion circuit is in failure, the second microcomputer performs the power generation control of the synchronous generator, by estimating a rotational position and speed of the synchronous generator based on the digital signal into which the A/D conversion circuit has converted the current signal.
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28. A power device comprising:
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a synchronous motor; a first switching circuit operable to perform an inverter switch operation to generate a driving current to a fixed winding of the synchronous motor, and a rectifier switch operation to rectify a regenerative current from the fixed winding of the synchronous motor; a rotation angle sensor of the synchronous motor; a first controller operable to input a current signal of the fixed winding of the synchronous motor and a sense output from the rotation angle sensor of the synchronous motor, operable to output an inverter switch control signal for the inverter switch operation to the first switching circuit in response to a drive command, and operable to output a rectifier switch control signal for the rectifier switch operation to the first switching circuit in response to a regeneration command; a synchronous generator; a second switching circuit operable to perform a rectifier switch operation to rectify current from a fixed winding of the synchronous generator; a rotation angle sensor of the synchronous generator; and a second controller operable to input a sense signal of the rotation angle sensor of the synchronous generator and a current signal from the fixed winding of the synchronous generator, and operable to output a rectifier switch control signal for the rectifier switch operation to the second switching circuit in response to a power generation command, wherein, when it is detected that the second controller has unusable failure in the power generation control of the synchronous generator, the first controller performs instead all or a part of the power generation control to be performed by the second controller.
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29. A power device comprising:
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a synchronous motor; a first switching circuit operable to perform an inverter switch operation to generate a driving current to a fixed winding of the synchronous motor, and a rectifier switch operation to rectify a regenerative current from the fixed winding of the synchronous motor; a rotation angle sensor of the synchronous motor; a first controller operable to input a current signal of the fixed winding of the synchronous motor and a sense output from the rotation angle sensor of the synchronous motor, operable to output an inverter switch control signal for the inverter switch operation to the first switching circuit in response to a drive command, and operable to output a rectifier switch control signal for the rectifier switch operation to the first switching circuit in response to a regeneration command; a synchronous generator; a second switching circuit operable to perform a rectifier switch operation to rectify current from a fixed winding of the synchronous generator; a rotation angle sensor of the synchronous generator; and a second controller operable to input a sense signal of the rotation angle sensor of the synchronous generator and a current signal from the fixed winding of the synchronous generator, and operable to output a rectifier switch control signal for the rectifier switch operation to the second switching circuit in response to a power generation command, wherein the first controller and the second controller are respectively a first microcomputer and a second microcomputer, each provided with a different CPU, wherein the second microcomputer comprises multiplexed A/D conversion circuits which convert a current signal of a fixed winding of the synchronous generator into a digital signal, wherein, when a main A/D conversion circuit is in failure, an auxiliary A/D conversion circuit is switched so as to act as a substitute and converts a current signal of the fixed winding of the synchronous generator into a digital signal, wherein the second microcomputer comprises an angle conversion circuit which inputs a sense output from the rotation angle sensor of the synchronous generator and converts the sense output into angle data, and wherein, when the angle conversion circuit is in failure, the second microcomputer performs the power generation control of the synchronous generator, by estimating a rotational position and speed of the synchronous generator based on the digital signal into which the A/D conversion circuit has converted the current signal of the fixed winding of the synchronous generator.
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Specification