Back to results
US 7,017,377 B2Granted
Washing machine with vector control for drive motor
AssigneeKabushiki Kaisha Toshiba
InventorsTsuyoshi Hosoito, Toshimasa Tanaka, Yoji Okazaki, Michiaki Ito, Shinichiro Kawabata, Kazunobu Nagai, Futoshi Isono
Life of this patent
Estimating the term…
Abstract
A washing machine includes an electric motor developing torque used for wash, rinse and dehydration operations, a current detector detecting current flowing into the motor, and a torque controller performing a vector control for the motor on the basis of the current detected by the current detector so that the torque developed by the motor is optimum for at least each of the wash and dehydration operations.
Claims8
A washing machine comprising:
- a brushless motor that develops torque used for wash, rinse and dehydration operations;
- a current detector configured to detect current flowing into the motor;
- a torque controller configured to perform a vector control for the motor based on the current detected by the current detector so that the torque developed by the motor is optimum for at least each of the wash and dehydration operations;
- and
- an inverter circuit configured to drive the motor, the inverter circuit including a plurality of upper arm side switching elements and a plurality of lower arm side switching elements, wherein the current detector detects current flowing through a shunt resistor connected in series to the lower arm side switching elements.
2 more elements
Dependencies are inferred from the claim text.