Inverter system for driving motor
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsMakoto Yoshida, Naomi Goto
Life of this patent
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Abstract
An inventor system in which a first power supply system powers: a switching-element-group driving a motor, a charging-pump-type gate-driving-circuit, an inverter controller. A second power supply system powers an air conditioning controller outside of the inverter. An insulating communication circuit provides communication between the inverter controller and the air conditioning controller insulating these two controller. Most parts of the inverter system are powered by a single power supply system, i.e. the first power supply system, whereby electromagnetic noises are reduced, spaces involved in insulation can be saved, and the amount of wiring as well as cost is reduced.
Claims20
An inverter system comprising:
- a first power supply having a positive side and a negative side;
- a motor;
- a plurality of switching elements including:
- a first plurality of switching elements, coupled to the positive side of the first power supply, forming a positive side arm, and
- a second plurality of switching elements, coupled to the negative side of the first power supply, forming a negative side arm;
- a gate-driving circuit, supported by the first power supply, for selectively driving one of the first plurality of switching elements of the positive side arm and one of the second plurality of switching elements of the negative side arm responsive to a control signal;
- an inverter controller, supported by the first power supply, for controlling the motor via the control signal;
- a second power supply;
- an outer controller supported by the second power supply;
- and
- an insulating communication circuit providing communication between the inverter controller and the outer controller.
An inverter system comprising:
- a first power supply having a positive side and a negative side;
- a motor;
- a plurality of switching elements including:
- a first plurality of switching elements, coupled to the positive side of the first power supply, forming a positive side arm, and
- a second plurality of switching elements, coupled to the negative side of the first power supply, forming a negative side arm;
- a gate-driving circuit, supported by the first power supply, for selectively driving one of the first plurality of switching elements of the positive side arm and one of the second plurality of switching elements of the negative side arm responsive to a control signal;
- an inverter controller, supported by the first power supply for, controlling the motor via the control signal;
- a secondary insulated power supply derived from the first power supply;
- an outer controller supported by the secondary insulated power supply;
- and
- an insulating communication circuit providing communication between the inverter controller and the outer controller.
Dependencies are inferred from the claim text.