Invention Grant
- Patent Title: Method and arrangement for sensorless operation of an electronically commutated motor
- Patent Title (中): 电子换向电机无传感器运行的方法和布置
-
Application No.: US11690890Application Date: 2007-03-26
-
Publication No.: US07902776B2Publication Date: 2011-03-08
- Inventor: Arno Karwath
- Applicant: Arno Karwath
- Applicant Address: DE St. Beorgen
- Assignee: EBM-PAPST St. Beorgen GmbH and Co. KG
- Current Assignee: EBM-PAPST St. Beorgen GmbH and Co. KG
- Current Assignee Address: DE St. Beorgen
- Agency: Oliver Intellectual Property LLC
- Agent Milton Oliver, Esq.
- Priority: DE102006014520 20060324
- Main IPC: H02P6/16
- IPC: H02P6/16

Abstract:
An improved electric motor has a rotor (124), a stator (125) having at least one phase winding strand (126), an output stage (122) for influencing the current flow in said phase winding strand, a DC link circuit (170) for supplying the output stage (122) with current, including a link circuit capacitor (178), and a control unit (132) having an arrangement (152) for sensing a value characterizing the current recharge into the link circuit capacitor (178), which control unit (132) is configured to specify commutation instants as a function of the sensed value, and to perform commutation operations in the power stage (122) at the commutation instants thus specified. Avoiding a need for prolonged “currentless intervals” permits achieving higher efficiency and power output, particularly in a motor having less than three winding phases.
Public/Granted literature
- US20070241705A1 METHOD & ARRANGEMENT FOR SENSORLESS OPERATION OF AN ELECTRONICALLY COMMUTATED MOTOR Public/Granted day:2007-10-18
Information query