基本信息:
- 专利标题： PUMP ASSEMBLY AND CONTROLLING METHOD
- 申请号：EP17164402.4 申请日：2017-03-31
- 公开(公告)号：EP3382888A1 公开(公告)日：2018-10-03
- 发明人： Vestergaard Kragelund, Klaus , Plougmann, Jan , Aarestrup, Jan Carøe
- 申请人： Grundfos Holding A/S
- 申请人地址： Poul Due Jensens Vej 7-11 8850 Bjerringbro DK
- 专利权人： Grundfos Holding A/S
- 当前专利权人： Grundfos Holding A/S
- 当前专利权人地址： Poul Due Jensens Vej 7-11 8850 Bjerringbro DK
- 代理机构： Patentanwälte Vollmann & Hemmer
- 主分类号： H02P21/00
- IPC分类号： H02P21/00 ; F04D13/06
摘要：
The present disclosure provides a pump assembly (1) comprising a pump unit (2)capable of providing a desired head H 0 at zero flow rate, a brushless speed-controlled permanent-magnet AC drive motor (205) for driving the pump unit (2), and a control unit for controlling the drive motor (205), wherein the control unit comprises a frequency converter configured to receive an input voltage (U in ), wherein the drive motor (205) is operable in a field-weakening mode and non-field-weakening mode, wherein the drive motor (205) is undersized for driving the pump unit (2) at a design input voltage (U 0 ) to provide a lower head H than the desired head H 0 at zero flow rate in the non-field-weakening mode and for driving the pump unit (2) to provide the desired head H 0 at zero flow rate in the field-weakening mode.
IPC结构图谱:
| H | 电学 |
| --H02 | 发电、变电或配电 |
| ----H02P | 电动机、发电机或机电变换器的控制或调节；控制变压器、电抗器或扼流圈 |
| ------H02P21/00 | 通过矢量控制，例如磁场方向控制来控制电机的设备或方法 |