| 发明名称 |
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| 摘要 |
<p>1294947 Inverter; control of A.C. motors TOKYO SHIBAURA ELECTRIC CO Ltd 15 Oct 1970 [15 Oct 1969] 49009/70 Headings H2F and H2J An electrical inverter 10 is used to drive two loads 15 and 16 by means of two separate threephase thyristor bridges 11 and 12. Both the thyristor bridges are commutated by the same device 13. Each time one of the thyristors in the bridge circuit is to be turned off, the D.C. source is interrupted by switching off thyristor 17. This is achieved by triggering thyristor 22. When capacitor 19 has discharged, thyristor 22 turns off. Then thyristors 17 and 21 are triggered together with the relevant bridge thyristors by pulses from the same oscillator. The trigger pulses for the bridges pass via switches, to enable either or both loads to be deactivated, to a ring counter which triggers the thyristors in sequence. The loads may be induction motors and speed of rotation of one motor may be changed with respect to the other by inserting a frequency divider in the control circuit for the thyristor bridges. Speed control by adjustment of phase of triggering pulses is also envisaged.</p> |
| 申请公布号 |
DE2050787(C3) |
申请公布日期 |
1979.05.10 |
| 申请号 |
DE19702050787 |
申请日期 |
1970.10.15 |
| 申请人 |
TOKYO SHIBAURA ELECTRIC CO., LTD., KAWASAKI, KANAGAWA (JAPAN) |
发明人 |
SEKI, NAGATAKA, FUCHU, TOKIO (JAPAN) |
| 分类号 |
H02P5/74;B60L7/16;H02M1/06;H02M7/48;H02M7/515;H02P27/06;(IPC1-7):02P13/18 |
主分类号 |
H02P5/74 |
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