It is used in two ways: to control the voltage at a point in a power system, and to control the speed of a motor by controlling the magnitude of the supply voltage. In either case, nowadays, a power converter is usually used as the control means. [Generator output voltage control] The field current is controlled so that the output voltage of a generator connected to a power grid or an independent load is kept constant regardless of fluctuations in the load size. [Voltage control with stabilized power supply] Stabilized power supplies used as power sources for communication devices, information processing devices, electronic devices, and the like also control the supply voltage to a constant value regardless of changes in the load current. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
電力システムの中のある点の電圧を制御する意味と,供給電圧の大きさを制御することによって電動機の速度制御を行う意味の二つに用いられる。いずれの場合にも最近では電力変換装置が制御手段として用いられるのがふつうである。 [発電機の出力電圧制御] 電力系統や独立した負荷と接続される発電機の出力電圧を負荷の大きさの変動に対して一定に保つように界磁電流を制御する。 [安定化電源での電圧制御] 通信機器,情報処理装置,電子機器などの電源として用いられる安定化電源でも負荷電流の変化に対して供給電圧は一定に制御される。 出典 株式会社平凡社世界大百科事典 第2版について 情報 |
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