Electronic device, control system for power conversion device, machine learning device, and method of controlling cooling fan
AssigneeMitsubishi Electric Corporation
InventorsShinya NAKAGAWA, Shizuri TAMURA, Ryuichi TAKEZAWA
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Abstract
A power conversion device includes a cooling fan, a cooling fan control unit that controls the drive amount of the cooling fan, and an electrolytic capacitor whose life varies according to the drive amount of the cooling fan. The cooling fan control unit controls the drive amount based on the relationship between the drive amount, the life of the cooling fan, and the life of the electrolytic capacitor.
Claims21
-22. (canceled)
An electronic device comprising:
- a first component;
- a control circuitry to control a drive amount of the first component;
- and
- a second component whose life varies according to the drive amount of the first component, wherein
- the control circuitry controls the drive amount based on a relationship between the drive amount, a life of the first component, and the life of the second component.
A control system for a power conversion device, the control system comprising:
- a power conversion device including a first component and a second component whose life varies according to a drive amount of the first component;
- and
- an information processing circuitry connected to the power conversion device and including a control circuitry to control the drive amount, wherein
- the control circuitry controls the drive amount based on a relationship between the drive amount, a life of the first component, and the life of the second component.
A method of controlling a cooling fan in a power conversion device, the power conversion device including:
- a cooling fan;
- one or more sensors including a first temperature sensor to measure an ambient temperature;
- a control circuitry to receive a temperature measured by the first temperature sensor to control a rotational speed of the cooling fan;
- a component whose life varies according to the rotational speed;
- and an operation time measurement circuitry to measure an operation time, the method comprising:
- obtaining a first relationship between the rotational speed of the cooling fan obtained by the control circuitry and the temperature measured by the first temperature sensor;
- obtaining a second relationship between the temperature measured by the first temperature sensor and the life of the component;
- obtaining an operation time of the power conversion device by the operation time measurement circuitry;
- obtaining a third relationship between the rotational speed of the cooling fan and the life of the component from calculation results of the first relationship, the second relationship, and the operation time of the power conversion;
- and
- determining the rotational speed of the cooling fan from a calculation result of the third relationship.
A machine learning device for learning a drive condition for a first component in a power conversion device, the machine learning device comprising:
- a state observing circuitry to observe a life of the first component and a life of a second component that varies according to a drive amount of the first component;
- and
- a learning circuitry to learn the drive condition based on the life of the first component and the life of the second component.
Dependencies are inferred from the claim text.