ABB SNAT603CNT
是一種勵(lì)磁系統(tǒng)，被定義為通過(guò)磁場(chǎng)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(jī)轉(zhuǎn)子繞組，為其提供必要的勵(lì)磁電流。
ABB SNAT603CNT勵(lì)磁系統(tǒng)的可靠性、控制簡(jiǎn)單性、易維護(hù)性、穩(wěn)定性和快速瞬態(tài)響應(yīng)都是其主要優(yōu)點(diǎn)。所需的勵(lì)磁量取決于負(fù)載電流、負(fù)載功率因數(shù)以及機(jī)器速度，當(dāng)負(fù)載電流大時(shí)系統(tǒng)需要的勵(lì)磁更多，轉(zhuǎn)速越低，系統(tǒng)的功率因數(shù)就會(huì)變得滯后。
ABB SNAT603CNT勵(lì)磁系統(tǒng)是一個(gè)單獨(dú)的單元，每個(gè)交流發(fā)電機(jī)都有一個(gè)發(fā)電機(jī)形式的勵(lì)磁機(jī)。集中勵(lì)磁系統(tǒng)有兩個(gè)或多個(gè)為母線供電的勵(lì)磁機(jī)，這種系統(tǒng)設(shè)計(jì)較為便宜，但是系統(tǒng)中的故障可能會(huì)對(duì)發(fā)電廠中的交流發(fā)電機(jī)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.