Control device for plurality of rotating electrical machines
AssigneeNissan Motor Co., Ltd.
InventorsYuusuke Minagawa, Minoru Arimitsu
Life of this patent
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Abstract
A control device for a rotating electrical machine system having a plurality of rotating electrical machines is provided with a single current control circuit and a controller. The controller sets an operating point of at least one rotating electrical machine of the plurality of rotating electrical machines, and sets the current for each rotating electrical machine so that one of the efficiency of the current control circuit and the overall efficiency with respect to all the rotating electrical machines. The controller controls the current control circuit so that the current control circuit supplies a composite current to all rotating electrical machines, the composite current combining the set current for each rotating electrical machine.
Claims12
A control device for a rotating electrical machine system having a first rotating electrical machine and a second rotating electrical machine, the rotation of each rotating electrical machine being controlled by a current flowing in response to the rotational phase of a rotor thereof, the control device comprising:
- a single current control circuit which is connected to the first and second rotating electrical machines and produces a composite current comprising the current for each rotating electrical machine;
- and
- a controller functioning to:
- set an operating point of the first rotating electrical machine,
- set an operating point of the second rotating electrical machine in response to the set operating point of the first rotating electrical machine so that one of the efficiency of the current control circuit and the overall efficiency is maximized, wherein the overall efficiency is the product of the efficiency of the current control circuit, the efficiency of the first rotating electrical machine, and the efficiency of the second rotating electrical machine,
- set the current for each rotating electrical machine based on the set operating points of the first and second rotating electrical machines, so as to minimize the current average value of the composite current while maintaining the set operating points of the first and second rotating electrical machines, and
- control the current control circuit so that the current control circuit produces the composite current for all the first and second rotating electrical machines.
A control method for a rotating electrical machine system having a first rotating electrical machine and a second rotating electrical machine, the rotation of each rotating electrical machine being controlled by a current flowing in response to the rotational phase of a rotor thereof, and having a single current control circuit which is connected to the first and second rotating electrical machines and produces a composite current comprising the current for each rotating electrical machine, the control method comprising:
- setting an operating point of the first rotating electrical machine;
- setting an operating point of the second rotating electrical machine in response to the set operating point of the first rotating electrical machine so that one of the efficiency of the current control circuit and the overall efficiency is maximized, wherein the overall efficiency is the product of the efficiency of the current control circuit, the efficiency of the first rotating electrical machine, and the efficiency of the second rotating electrical machine;
- setting the current for each rotating electrical machine based on the set operating points of the first and second rotating electrical machines so as to minimize the current average value of the composite current while maintaining the set operating points of the first and second rotating electrical machines;
- and
- controlling the current control circuit so that the current control circuit produces the composite current for the first and second rotating electrical machines.
A control device for a rotating electrical machine system having a first rotating electrical machine and a second rotating electrical machines, the rotation of each rotating electrical machine being controlled by a current flowing in response to the rotational phase of a rotor thereof, the control device comprising:
- a single current control circuit which is connected to the first and second rotating electrical machines and produces a composite current comprising the current for each rotating electrical machine;
- means for setting an operating point of the first rotating electrical machine;
- means for setting an operating point of the second rotating electrical machine in response to the set operating point of the first rotating electrical machine so that one of the efficiency of the current control circuit and the overall efficiency is maximized, wherein the overall efficiency is the product of the efficiency of the current control circuit, the efficiency of the first rotating electrical machine, and the efficiency of the second rotating electrical machine;
- means for setting the current for each rotating electrical machine based on the set operating points of the first and second rotating electrical machines;
- and
- means for controlling the current control circuit to produce the composite current for the first and second rotating electrical machines, wherein the current average value of the composite current is minimized while maintaining the set operating points of the first and second rotating electrical machines.
Dependencies are inferred from the claim text.