| US 7,579,798 B2 | ||
| Inverter for washer and inverter for washer-drier | ||
| Tsuyoshi Hosoito, Aichi (Japan); and Kazunobu Nagai, Aichi (Japan) | ||
| Assigned to Kabushiki Kaisha Toshiba, Tokyo (Japan); Toshiba Ha Products Co., Ltd., Osaka (Japan); and Toshiba Consumer Marketing Corporation, Tokyo (Japan) | ||
| Appl. No. 10/498,249 PCT Filed Nov. 07, 2002, PCT No. PCT/JP02/11635 § 371(c)(1), (2), (4) Date Mar. 14, 2005, PCT Pub. No. WO03/050341, PCT Pub. Date Jun. 19, 2003. |
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| Claims priority of application No. 2001-380176 (JP), filed on Dec. 13, 2001. | ||
| Prior Publication US 2005/0160771 A1, Jul. 28, 2005 | ||
| Int. Cl. H02P 21/00 (2006.01) | ||
| U.S. Cl. 318—400.02 [68/12.16; 8/159] | 2 Claims |
| 1. An inverter for a washer comprising:
a control unit configured to control a brushless DC motor that supplies a rotational driving force for performance of washing,
rinsing and dehydrating operations with respect to a full automatic washer in which steps of wash, rinse and dehydration are
consecutively carried out,
wherein the control unit controls the brushless DC motor so that the brushless DC motor is operated with a full field in the
washing and rinsing operations and a low-speed rotation region of the dehydrating operation and so that the brushless DC motor
is operated with a weak field in a high speed rotation region of the dehydrating operation, and
wherein the control unit controls an output torque of the brushless DC motor in a vector control based on a current command
generated according to a speed command when the full field operation is carried out and the control unit controls the brushless
DC motor in a voltage/phase control based on a voltage command and a phase command both generated according to the speed command
when the field weakening operation is carried out.
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