Electricity: motive power systems – Synchronous motor systems – Brushless motor closed-loop control
Reexamination Certificate
2002-11-07
2009-08-25
Ro, Bentsu (Department: 2837)
Electricity: motive power systems
Synchronous motor systems
Brushless motor closed-loop control
C068S012160, C008S159000
Reexamination Certificate
active
07579798
ABSTRACT:
An inverter for a washer performing drive control of an electric motor imparting a rotational driving force required for washing, rinsing and dehydrating operations in a full automatic washer performing the washing, rinsing and dehydrating processes continuously. The inverter comprises control means for operating the motor with a full field in the low speed rotational region of washing, rinsing and dehydrating operations, with weak field in the high speed rotational region of dehydrating operation, and performing vector control of the output of the motor in the case of full field operation, and voltage/phase control of the motor in the case of field weakening operation.
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Supplementary European Search Report dated Dec. 6, 2007 for corresponding European Application No. 02 78 0049.
Hosoito Tsuyoshi
Nagai Kazunobu
Kabushiki Kaisha Toshiba
Paul Antony M
Pillsbury Winthrop Shaw & Pittman LLP
Ro Bentsu
Toshiba Consumer Marketing Corporation
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