Digital frequency-conversion generator set

Abstract

The invention discloses a digital frequency-conversion generator set, comprising a stand assembly, an air guiding frame, frequency converter cooling fins, a frequency converter, an air guiding cover, a hose, a joint, a generator cooling protective frame, an engine assembly, a fan and a generator, wherein the air guiding frame is fixed on the strand assembly through the air guiding cover, one end of the hose is connected with the air guiding frame, the other end of the hose is connected with the joint connected with the generator cooling protective frame, the fan is fixed on the generator and located inside the generator cooling protective frame, the frequency converter is tightly fit with the frequency converter cooling fins consisting of frequency converter cooling teeth, and one baffle plate and the frequency converter cooling teeth encircle to form a frequency converter cooling interlayer cavity. The digital frequency-conversion generator set can fully meet the cooling requirements of the frequency converter and the cooling requirements of the generator, and the quantity and the manufacturing cost of the fan are not needed to be increased.

Description

Technical field [0001] The invention relates to a generator set, in particular to a digital variable frequency generator set. Background technique [0002] In modern variable frequency generator sets, the inverter and generator will generate heat during operation. If the heat continuously accumulates, it will not only cause the performance of the motor’s magnetic steel to decrease and the heat loss of the wire to increase, but also the resistance, capacitance, inductance, Under the influence of high temperature, the parameters of transformers and other components are prone to deviation, which causes system errors to exceed the standard. At the same time, in a high-temperature environment, various electronic components are more likely to age and cause failures. Therefore, both the inverter and the generator need to be cooled. [0003] There are two common cooling methods for the inverter and generator of traditional variable frequency generators: the first cooling method is to dire...

AI Technical Summary

Problems solved by technology

The above two cooling methods have their obvious disadvantages. The disadvantage of the first cooling method is: after the air flow cools the stator and rotor of the generator, the temperature is usually around 50°C. Cooling, it is difficult to meet the cooling requirements of the inverter

The disadvantages of the second cooling method are: on the one hand, the number of fans and accessories used for cooling increases, which increases the manufacturing and maintenance costs of the unit; on the other hand, the increase in parts will inevitably increase the volume of the unit. increase, thus increasing the cost of storage and transportation

In this way, the weight of the entire muffler is concentrated on the connecting bolts. Under the action of the high-temperature exhaust gas of the engine, the joint between the muffler and the exhaust port of the cylinder head is prone to breakage of bolts or joints under the dual effects of thermal expansion and gravity. The welding part is desoldered and torn. In order to overcome the above defects of the traditional muffler, it is necessary to make appropriate improvements to the structure and connection method of the muffler.

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