同步發(fā)電機(jī)是柴油發(fā)電機(jī)組的關(guān)鍵部分。為柴油發(fā)電機(jī)組建立一個合適的工作環(huán)境，做好日常維護(hù)是十分必要的。

發(fā)電機(jī)房內(nèi)的高溫、潮濕和空氣污染物是引起發(fā)電機(jī)故障的最常見因素。粉塵、灰塵和其它空氣污染物的積累會引起絕緣層的性能變壞，不僅易形成對地的導(dǎo)電通路,還會使轉(zhuǎn)子軸承部分的摩擦力增大而發(fā)熱。濕氣以及空氣污染物中的濕氣極易在發(fā)電機(jī)內(nèi)形成對地的漏電通路，引起發(fā)電機(jī)故障。機(jī)房內(nèi)溫度過高會使發(fā)電機(jī)組工作時產(chǎn)生的熱量難以散出造成其輸出功率下降、機(jī)組過熱。所以機(jī)房的防塵、防潮濕、通風(fēng)降溫就必須引起足夠的重視。

無論是單軸承發(fā)電機(jī)還是雙軸承發(fā)電機(jī)，它們的轉(zhuǎn)子軸與柴油發(fā)動機(jī)主軸之間連接的同軸度要求很高。長時期運(yùn)行后的機(jī)組有時同軸度可能降低，導(dǎo)致發(fā)電機(jī)燥聲增大，溫度過高。應(yīng)定期檢查、維護(hù)以保持同軸度良好。

負(fù)荷超出發(fā)電機(jī)的額定負(fù)載范圍，或三相負(fù)荷很不平衡，也會造成發(fā)電機(jī)效率降低和過熱。

Synchronous generator is a key component of diesel generator sets. It is essential to establish a suitable working environment and perform daily maintenance for diesel generator sets.

The high temperature, humidity, and air pollutants in the generator room are the most common factors causing generator failures. The accumulation of dust, dirt, and other air pollutants can cause the performance of the insulation layer to deteriorate, not only forming a conductive path to the ground, but also increasing the frictional force of the rotor bearing and generating heat. Moisture and air pollutants can easily form a leakage path to ground inside the generator, causing generator failure. Excessive temperature in the computer room can make it difficult for the heat generated during the operation of the generator set to dissipate, resulting in a decrease in output power and overheating of the unit. So the dust prevention, moisture prevention, ventilation and cooling of the computer room must be given sufficient attention.

Both single bearing and double bearing generators require high coaxiality between their rotor shafts and the main shaft of the diesel engine. After long-term operation, the coaxiality of the unit may sometimes decrease, resulting in increased generator noise and high temperature. Regular inspections and maintenance should be carried out to maintain good coaxiality.

The load exceeding the rated load range of the generator, or the three-phase load being very unbalanced, can also cause a decrease in generator efficiency and overheating.