专利检索 ap:("Danfoss Power Electronics A/S") AND inv:"Jörg Dannehl" 第 1 页

1.

发明公开
Method for operating rotating machinery by means of a variable speed drive and variable speed drive for performing the method 审中-公开

公开(公告)号：US20230198441A1

公开(公告)日：2023-06-22

申请号：US18067880

申请日：2022-12-19

申请人： Danfoss Power Electronics A/S

发明人： Daniel Andersen , Jörg Dannehl , Virgil Ioan Lupu

IPC分类号： H02P23/04

CPC分类号： H02P23/04

摘要： The present invention is directed at a method for operating rotating machinery, such as an electric motor, by means of a variable speed drive (VSD). The variable speed drive is provided for identifying mechanical resonance points by means of a sensor and corresponding speeds of the machinery; storing the speeds at which the identified mechanical resonance points occur; and bypassing the speeds at which the identified mechanical resonance points occur during operation of the rotating machinery. The invention is also directed at a variable speed drive for performing said method.

2.

发明公开
Method for evaluating the degradation level of capacitors of a power filter, adjustable speed drive and power converter provided for performing the method 审中-公开

公开(公告)号：US20230194630A1

公开(公告)日：2023-06-22

申请号：US18067862

申请日：2022-12-19

申请人： Danfoss Power Electronics A/S

发明人： Lucian Asiminoaei , Luzia Almeida , Jörg Dannehl , Sanjeet Kumar Dwivedi , Norbert Hanigovszki

IPC分类号： G01R31/64 , G01R23/15

CPC分类号： G01R31/64 , G01R23/15 , H03H7/0115

摘要： The present invention is directed at a method for evaluating the degradation level of capacitors of a power filter connected to an adjustable speed drive (ASD) or a power converter. The invention is also directed at an adjustable speed drive and a power converter provided for performing the method.