Control magnetic bearing device
First Claim
1. A control magnetic bearing device comprising:
- a plurality of control magnetic bearings configured to contactlessly support a rotor;
an electric motor configured to rotate the rotor;
a magnetic bearing drive circuit configured to drive the magnetic bearings;
an inverter configured to drive the electric motor;
a main control unit configured to control the magnetic bearing drive circuit and the inverter; and
a power source unit connected to an external power source and configured to supply electric power to the magnetic bearing drive circuit, the inverter, and the main control unit,wherein the main control unit has software-programmable digital processing means for controlling a command current value to be output to the inverter, in accordance with an input voltage value from the power source unit.
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Accused Products
Abstract
A control magnetic bearing device comprises a plurality of control magnetic bearings for contactlessly supporting a rotor, an electric motor for rotating the rotor, a magnetic bearing drive circuit for driving the magnetic bearings, an inverter for driving the electric motor, a main control circuit for controlling the magnetic bearing drive circuit and the inverter, and a power source unit connected to an external power source for supplying electric power to the magnetic bearing drive circuit, the inverter and the main control unit. The main control unit has software-programmable digital processing means for controlling the inverter in accordance with an input voltage value from the power source unit.
62 Citations
3 Claims
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1. A control magnetic bearing device comprising:
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a plurality of control magnetic bearings configured to contactlessly support a rotor; an electric motor configured to rotate the rotor; a magnetic bearing drive circuit configured to drive the magnetic bearings; an inverter configured to drive the electric motor; a main control unit configured to control the magnetic bearing drive circuit and the inverter; and a power source unit connected to an external power source and configured to supply electric power to the magnetic bearing drive circuit, the inverter, and the main control unit, wherein the main control unit has software-programmable digital processing means for controlling a command current value to be output to the inverter, in accordance with an input voltage value from the power source unit.
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2. A control magnetic bearing device comprising:
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a plurality of control magnetic bearings configured to contactlessly support a rotor; an electric motor configured to rotate the rotor; a magnetic bearing drive circuit configured to drive the electric motor; a main control unit configured control the magnetic bearing drive circuit and the inverter; and a power source unit connected to an external power source and configured to supply electric power to the magnetic bearing drive circuit, the inverter, and the main control unit; wherein the main control unit has software-programmable digital processing means for altering an upper limit of a command current value to be output to the inverter, in accordance with the input voltage value from the power source unit. - View Dependent Claims (3)
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Specification