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US 9,431,923 B2Granted
Power converter
AssigneeDaikin Industries, Ltd.
InventorsYoshiyuki Harada, Toshiyuki Maeda
Life of this patent
Estimating the term…
Abstract
An operation area of a motor is increased without increasing the capacity of a switching element. A current limiter which limits a current flowing in switching elements to prevent the current from exceeding a predetermined current limit value is provided. A current limit value controller which decreases the current limit value if a loss generated in the switching elements increases at a same current value, and increases the current limit value if the loss decreases at a same current value, is provided.
Claims20
A power converter, comprising:
- an inverter circuit having a plurality of switching elements;
- a switching controller which controls switching of the switching elements;
- and
- a current limiter which limits a current flowing in the switching elements to prevent the current from exceeding a predetermined current limit value, wherein
- the power converter includes a current limit value controller which decreases the current limit value if a loss generated in the switching elements increases at a same current value, and increases the current limit value if the loss decreases at a same current value.
2 more elements
Dependencies are inferred from the claim text.