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A new type of generator set for diesel engines

Release time:

2025-06-27

A diesel generator set is a complex system consisting of a diesel engine, power supply system, cooling system, starting system, generator, excitation control system, protection unit, electronic control unit, communication system, and main control system. The engine, fuel supply system, cooling system, starting system, and generator can be collectively classified as the mechanical parts of a diesel generator set. The excitation controller, protection controller, electronic control system, communication system, and main control system can be collectively referred to as the control part of the diesel generator set.
(1) Diesel engine
The diesel engine power generation system consists of a diesel engine, fuel supply system, cooling system, starting system, and synchronous brushless generator assembly. The diesel engine is the power core of the entire power generation system, and the first stage of the diesel generator set is the energy conversion device, which is a key equipment for converting chemical energy into mechanical energy. A diesel engine is mainly composed of the following components and parts: collective components and crankshaft connecting rod mechanism, valve train and intake/exhaust system, diesel engine supply system, cooling system, lubrication system, starting and electrical system, and turbocharging system.
(2) Brushless synchronous generator
With the continuous improvement of military, industrial modernization and automation, the requirements for the quality of generator power supply are also increasing. The improvement and development of synchronous generators, as the main power generation equipment, have also been rapid. Brushless synchronous generators and their excitation systems have emerged and are constantly evolving and improving.
The characteristics of a brushless synchronous generator are:
1: No sliding contact part, high reliability, simple maintenance, can operate continuously for a long time with little maintenance, especially suitable for automated power stations and harsh environments.
2: The conductive part has no rotating contact and does not generate sparks. It is suitable for operation in high-risk and harsh environmental conditions such as flammable gases and high dust. At the same time, the characteristic of no slip ring can also adapt to high temperature environments.
3: The voltage waveform emitted is good with low distortion rate.
4: Due to the fact that brushless generators are composed of multi-stage generators and indirectly control the excitation power of the main generator, the control of excitation power is very small. Therefore, the excitation power regulation device has controllable power components with small volume and low heat generation, resulting in low failure rate and high reliability.
5: Although the brushless synchronous generator is a self-excited excitation system, it has the characteristics of a separately excited synchronous generator and is easy to achieve parallel operation.