发明名称 |
Control system for electric motor drive for compressor - uses a time interval greater than time interval for reciprocal value of switching frequency. |
摘要 |
Method for the control of the electric motor drive of a compressor where an additional condition must be fulfilled for the drive to be stopped whilst the pressure value (Pist) prevails. A total time interval comprising a first time interval (t1) and a second time interval (t2) must be greater than the time interval which corresponds to the reciprocal value of a given switching frequency (SH), using a risk factor (k) between 0.5 and 0.9. ADVANTAGE - Control which optimises the conditions for switching off compressed air compressors and screw compressors of all kinds.
|
申请公布号 |
DE4211191(A1) |
申请公布日期 |
1993.10.07 |
申请号 |
DE19924211191 |
申请日期 |
1992.04.03 |
申请人 |
MAHLE GMBH, 70376 STUTTGART, DE |
发明人 |
WEISZ, RAFAEL, DR., 7050 WAIBLINGEN, DE |
分类号 |
F04B49/02;(IPC1-7):F04B49/02 |
主分类号 |
F04B49/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|