ELEKTRISK GOLVRENGOERARE MED MJUK STARTFUNKTION,申请号SE19900003321-传众专利搜索

ELEKTRISK GOLVRENGOERARE MED MJUK STARTFUNKTION

申请公布号：SE9003321(D0)

申请号：SE19900003321

申请日期：1990.10.17

申请公布日期：1990.10.17

申请人：

NIHON PATENT ELECTRIC CO LTD

发明人：N *KUMAKI

分类号：A47L11/10;H02P1/30

主分类号：A47L11/10

摘要：The electric floor cleaner drives a three-phase motor, whose rated voltage is equal to a voltage obtained by voltage doubling and rectifying a single-phase commercial power line and then by converting a voltage doubled d.c. voltage into three-phase a.c. by an inverter. The voltage and frequency of the three-phase a.c. output from the inverter are controlled for a predetermined period of time after a power switch is put into a turned on state from a turned off state. - It is therefore possible to reduce the starting current to a small value enabling the use of a larger rated output motor than a motor in a conventional system within an allowable current limit of a commercial power line.