Special generator set adopting high-voltage direct current output for base station switching power supply

Abstract

The invention provides a special generator set adopting high-voltage direct current output for a base station switching power supply, and the generator set comprises a special generator set body for the base station switching power supply, an automatic engine oil adding device and a control system; the special generator set body for the base station switching power supply comprises a generator set rack; an engine and a neodymium iron boron rare earth permanent magnet generator are arranged on a generator set rack on the special generator set body for the base station switching power supply. According to a mode that a base station switching power supply supplies power to equipment, medium-frequency three-phase alternating current power generation with a large voltage fluctuation range when a neodymium iron boron rare earth permanent magnet generator is loaded is converted into 280V high-voltage direct current meeting input of the base station switching power supply to supply power to the switching power supply through simple rectifying, filtering and voltage stabilizing circuits, so the generator set inherits the advantages of small size and light weight of a neodymium iron boron rare earth permanent magnet generator, and solves the problems of carrying, low cost, oil consumption and failure rate of a 5G base station emergency generator set.

Description

technical field [0001] The invention relates to the technical field of generator sets, in particular to a generator set dedicated to switching power supplies for base stations using high-voltage direct current output. Background technique [0002] The equipment power of existing base stations (2G, 3G, 4G) is smaller than that of 5G base stations. After the mains power is abnormal, maintenance personnel generally use traditional AC power frequency generators to manually generate power for the base station. The power of the generator set generally matches the generator power according to the actual load of the base station (N+1 mode is not used): if the DC load of the base station is ≤55A, it is generally considered that a 5KW generator set is used to directly supply a 50A (maximum output current 55A , with a maximum net power of 3KW) for power generation. When the DC load of the base station is ≤110A, an 8KW generator set is generally used to directly generate power for two s...

AI Technical Summary

Problems solved by technology

[0006] 2. Large size: The 8KW emergency generator set of the existing base station generally uses a 30-liter fuel tank, while the 12KW generally uses a 50-liter fuel tank. The house can only accommodate 3 units, wasting vehicle resources for power generation

[0007] 3. Heavy weight: The weight of the traditional 8KW power frequency AC gasoline generator set is about 130kg when it is full of fuel, and the weight of the 12KW unit is more than 200kg. The personnel who go out to generate electricity are basically in groups of two, and the traditional power generation mode is adopted. The 8KW unit is basically the load limit for two people, and the unit above 12KW cannot get on and off the car at all, and the unit is difficult to carry.

[0008] 4. High failure rate: In order to save costs, the existing conventional power frequency base station emergency generator sets generally use brushed generators. The motor part contains carbon brushes (consumable parts), excitation system, rotor coil, and AVR, which have a high failure rate. Practice has proved that the failure rate of the motor part of the base station emergency generator set accounts for more than 40% of the whole machine,

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