发明名称 |
METHOD AND DEVICE FOR OPERATING AN ELECTRIC DRIVE WITH THE AID OF A PHASE ANGLE CONTROL |
摘要 |
The invention relates to a method for operating an electric motor (2) having a phase angle control with the following steps: Applying an AC voltage to a series connection of the electric motor (2) and a switching element (4), particularly a triac, wherein the switching element (4) connects through by applying an ignition signal and suppresses the flow of a current if the amount of current falls below a holding current; determining the time of a zero crossing of a virtual motor current that would flow if the switching element (4) were connected through; and turning on the switching element (4) at an activation time that is dependant on the time of the zero crossing of the virtual motor current. |
申请公布号 |
EP2223427(A1) |
申请公布日期 |
2010.09.01 |
申请号 |
EP20080861128 |
申请日期 |
2008.10.15 |
申请人 |
ROBERT BOSCH GMBH |
发明人 |
WALTER, ROLAND;WISZNIEWSKI, JACEK;MEYER, MICHAEL;DENGLER, KLAUS |
分类号 |
H02P25/14 |
主分类号 |
H02P25/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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