The structure and principle of permanent magnet machine and exciter are the same as that of generator, both of which are wire cutting magnetic force line. In other words, there are three generators of different sizes hidden in a complete generator.

①  當發(fā)電機轉動(dòng)時(shí)，永磁機里的磁場(chǎng)轉動(dòng)，定子線(xiàn)圈中發(fā)出相對較弱的三相交流電，送往調壓模塊，作為勵磁的電源。

① When the generator rotates, the magnetic field in the permanent magnet machine rotates, and the relatively weak three-phase alternating current from the stator coil is sent to the voltage regulating module as the excitation power supply.

②  勵磁電源經(jīng)過(guò)調壓模塊的整流后，變成直流，送進(jìn)勵磁機定子，勵磁機開(kāi)始發(fā)電。

② After rectifying the voltage regulating module, the excitation power supply becomes DC, which is sent to the exciter stator, and the exciter starts to generate electricity.

③  勵磁機發(fā)出的交流電經(jīng)過(guò)一套整流模塊（旋轉二極管）進(jìn)行整流，送往發(fā)電機主轉子。這部分直流電就是所謂的“勵磁電流”。

③ The AC power from the exciter is rectified by a set of rectifier module (rotating diode) and sent to the main rotor of the generator. This part of direct current is called "excitation current".

④  主轉子建立磁場(chǎng)，從主定子輸出更終的三相交流電。

④ The main rotor establishes the magnetic field and outputs the final three-phase alternating current from the main stator.

相對于火電水電等大型機組，內燃機的這種勵磁系統顯得極為簡(jiǎn)陋，相關(guān)參數和保護也比較少，一般只能看到勵磁電壓和勵磁電流兩個(gè)參數。有的系統里甚至這兩個(gè)數據都不對外送，想看勵磁電壓勵磁電流，請連上電腦。

Compared with large units such as thermal power, hydropower and other large-scale units, the excitation system of internal combustion engine is very simple, and the relevant parameters and protection are relatively small. Generally, only two parameters of excitation voltage and excitation current can be seen. In some systems, even these two data are not sent out. If you want to see the excitation voltage and current, please connect to the computer.

有功和無(wú)功控制

Active and reactive power control

發(fā)電機的有功功率和無(wú)功功率是分開(kāi)控制的，是完全不同的兩種方式。

The active power and reactive power of the generator are controlled separately, which are two completely different ways.

有功功率對應的是發(fā)動(dòng)機的軸輸出功率，有功功率提高，需要把發(fā)動(dòng)機油門(mén)開(kāi)大，耗氣/油量上升。這部分由發(fā)動(dòng)機的調速系統控制，和發(fā)電機無(wú)關(guān)。

The active power corresponds to the shaft output power of the engine. If the active power is increased, the engine throttle should be opened up, and the gas / fuel consumption will increase. This part is controlled by the speed control system of the engine and has nothing to do with the generator.

無(wú)功功率對應的是主轉子磁場(chǎng)，無(wú)功功率提高，需要加大主轉子磁場(chǎng)強度，加大勵磁電壓。這部分由發(fā)電機的調壓系統控制，也就是調壓模塊，和發(fā)動(dòng)機無(wú)關(guān)。

The reactive power corresponds to the magnetic field of the main rotor. To improve the reactive power, it is necessary to increase the magnetic field strength of the main rotor and increase the excitation voltage. This part is controlled by the voltage regulating system of the generator, that is, the voltage regulating module, and has nothing to do with the engine.

雖然有功和無(wú)功在控制上是分開(kāi)的，但在分布式項目中，兩者都是成比例的增長(cháng)或減小，這是因為分布式項目通常采用定功率因數運行的模式運行，有功和無(wú)功的比例被鎖定了，當我們人為去調節有功功率時(shí)，無(wú)功功率會(huì )自動(dòng)的跟著(zhù)調節。

Although active power and reactive power are separated in control, they both increase or decrease proportionally in distributed projects. This is because distributed projects usually operate in the mode of fixed power factor operation, and the proportion of active and reactive power is locked. When we artificially adjust the active power, reactive power will automatically follow the regulation.

燃氣發(fā)電機組告訴大家燃氣發(fā)電機組勵磁系統的介紹？大家在購買(mǎi)的過(guò)程中一定要根據自我的需求來(lái)考量！

Gas generator set to tell you about the gas generator excitation system? Everyone in the purchase process must be based on their own needs to consider!