发明名称 |
WERKWIJZE EN INRICHTING VOOR HET REGELEN VAN HET ELEKTRISCH VERMOGEN, DAT DOOR EEN WISSELSTROOMNET AAN EEN VERBRUIKER WORDT AFGEGEVEN. |
摘要 |
<p>A method of regulating electrical power supplied via a current path to a consumer in an A.C. network involves setting a desired current flow angle using a power switching device connected in the current path to the consumer. The method includes cutting the switching device ON at the beginning of each half-wave of the line voltage substantially at a phase angle of zero degrees, and cutting the power switching device off at a phase angle corresponding to the desired current flow angle. A power switching device for carrying out the method includes at least one set of two transistors having their respective collector-emitter leads connected in parallel to define a current path. Rectifier means are provided in series with the consuming means and the transistors. Secondary winding means of transformer means are connected in respective base-emitter circuits of the transistors, while primary winding means of the transformer means are connected to a source of switching voltages which drive the transistors. The primary winding means are connected to a source of driving voltage which provide gating ON pulses to the two transistors out of phase but overlapping. The driving voltage includes OFF pulses which include a portion whose polarity is opposite to that of the gating ON pulses.</p> |
申请公布号 |
NL7709860(A) |
申请公布日期 |
1978.03.13 |
申请号 |
NL19770009860 |
申请日期 |
1977.09.07 |
申请人 |
POUL HAHN EVERS TE PURA, ZWITSERLAND. |
发明人 |
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分类号 |
G05F1/445;H02M5/293;(IPC1-7):05F1/66 |
主分类号 |
G05F1/445 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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