ABB SNAT603CNT
是一種勵磁系統(tǒng)，被定義為通過磁場繞組中的電流產(chǎn)生磁通量的系統(tǒng)。這種系統(tǒng)主要應(yīng)用在同步電機轉(zhuǎn)子繞組，為其提供必要的勵磁電流。
ABB SNAT603CNT勵磁系統(tǒng)的可靠性、控制簡單性、易維護性、穩(wěn)定性和快速瞬態(tài)響應(yīng)都是其主要優(yōu)點。所需的勵磁量取決于負(fù)載電流、負(fù)載功率因數(shù)以及機器速度，當(dāng)負(fù)載電流大時系統(tǒng)需要的勵磁更多，轉(zhuǎn)速越低，系統(tǒng)的功率因數(shù)就會變得滯后。
ABB SNAT603CNT勵磁系統(tǒng)是一個單獨的單元，每個交流發(fā)電機都有一個發(fā)電機形式的勵磁機。集中勵磁系統(tǒng)有兩個或多個為母線供電的勵磁機，這種系統(tǒng)設(shè)計較為便宜，但是系統(tǒng)中的故障可能會對發(fā)電廠中的交流發(fā)電機產(chǎn)生不利影響。
The reliability, simplicity of control, ease of maintenance, stability, and fast transient response of the ABB SNAT603CNT excitation system are its main advantages. The required excitation amount depends on the load current, load power factor, and machine speed. When the load current is high, the system requires more excitation, and the lower the speed, the power factor of the system will become lagging.
The ABB SNAT603CNT excitation system is a separate unit, with each AC generator having an exciter in the b of a generator. The centralized excitation system has two or more exciters that supply power to the busbar. This system design is relatively inexpensive, but faults in the system may have adverse effects on the AC generator in the power plant.
