Dealing with The Issue of Unstable Excitation of Diesel Generators

The excitation system refers to the power supply and its ancillary equipment that supplies the excitation current of a synchronous generator. It generally consists of two main parts: the excitation power unit and the excitation regulator. The excitation power unit provides excitation current to the synchronous generator rotor; The excitation regulator controls the output of the excitation power unit based on the input signal and given regulation criteria. The automatic excitation regulator of the excitation system plays a significant role in improving the stability of parallel units in the power system. Especially with the development of modern power systems, the trend of decreasing the stability limit of units has also prompted the continuous development of excitation technology. But sometimes there may be unstable excitation of diesel generator sets. How should users handle it? This article will explain to you about Dingbo Electric Power.

The reason for the instability of the excitation machine in diesel generators, such as the frequent loss of residual magnetism after shutdown due to the proximity of the excitation machine magnetic pole material to the soft steel. The lack of magnetism in the magnetic poles of a diesel generator can also make its power generation function unstable. If the excitation circuit components of the diesel generator are damaged or have open circuits, short circuits, or grounding lines, it can also cause the diesel generator to malfunction. There are also issues such as incorrect wiring of the excitation winding, opposite polarity, poor contact between the brush and commutator, insufficient pressure on the brush holder, poor contact between the generator's slip ring and brush, and damaged fuses that can cause instability in diesel generators.

Therefore, when using a diesel generator, the battery needs to be regularly prepared and magnetized before power generation. If there is damage to the excitation circuit components or circuit problems, it is necessary to replace the components in a timely manner and repair the faulty circuit. Regularly clean the sharp dirt on the contact surface, tighten the brush holder, and adjust the pressure of the electric brush appropriately. The wiring is incorrect, please make the wiring more accurate. If the fuse is damaged, the cause should be identified first, and if replacement is needed, a suitable fuse should also be replaced.

Founded in 1974, Dingbo Power Generation Equipment Co., Ltd. is a professional manufacturer of diesel engines, generators and generator sets, and one of the earliest manufacturers of diesel engines, generators and generator sets in China. Since 1992, the company has been a qualified generator set manufacturer inspected by the National Internal Combustion Engine Generator Set Quality Supervision and Inspection Center. Over the years, the company has carried out extensive cooperation with Shanghai Diesel, Weichai, Sweden Volvo, Sino US joint venture Chongqing Cummins, American Qianglu and other companies, and has become a (OEM) supporting factory and technical center. It has 64 sales service departments nationwide, providing users with design, supply, commissioning and maintenance services at any time. Dingbo quality is worth depending on. If you want get more information, please feel free to send email to sales@dieselgeneratortech.com we will pay highly attention on your question.