Inverter, motor control apparatus, and power steering system
AssigneeJtekt Corporation
InventorHiroshi Kitamoto
Life of this patent
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Abstract
An inverter includes a positive electrode terminal and a negative electrode terminal, upper-arm switching elements and lower-arm switching elements, and a voltage divider that supplies partial voltages of a voltage between the positive electrode terminal and the negative electrode terminal to a gate and a drain, respectively, of the lower-arm switching element. The lower-arm switching element includes an HEMT. In the voltage divider, the partial voltages are set to turn the lower-arm switching element off when a positive electrode and a negative electrode of a DC power supply are reversely connected to the positive electrode terminal and the negative electrode terminal, respectively.
Claims7
An inverter comprising:
- a positive electrode terminal and a negative electrode terminal to which a positive electrode and a negative electrode, respectively, of a DC power supply are connected;
- an upper-arm switching element and a lower-arm switching element connected in series between the positive electrode terminal and the negative electrode terminal;
- and
- a voltage divider connected between the positive electrode terminal and the negative electrode terminal to supply partial voltages of a voltage between the positive electrode terminal and the negative electrode terminal to a gate and a drain, respectively, of the lower-arm switching element;
- wherein
- the lower-arm switching element includes a high electron mobility transistor,
- in the voltage divider, the partial voltages are set to turn the lower-arm switching element off when the DC power supply is reversely connected in a manner that the positive electrode of the DC power supply is connected to the negative electrode terminal, while the negative electrode of the DC power supply is connected to the positive electrode terminal.
Dependencies are inferred from the claim text.