Environment-friendly and energy-saving DC power station

Abstract

The invention discloses an environment-friendly and energy-saving DC power station. The DC power station comprises an input AC voltage sampling circuit, an input AC current sampling circuit, a load voltage regulator, a rectiformer, a commutator, a controller, a filter and power compensation device, an output DC voltage sampling circuit, and an output DC current sampling circuit, the output of theinput AC voltage sampling circuit and the input AC current sampling circuit is connected with the controller, the load voltage regulator is serially connected between the AC input power supply and theinput end of the rectiformer, the secondary lateral low voltage winding of the rectiformer is connected with the input end of the commutator, the secondary lateral medium voltage winding of the rectiformer is connected with the filter and power compensation device, the output of the output DC voltage sampling circuit and the output DC current sampling circuit is connected with the controller, thecontrol output of the controller is respectively connected with the commutator and the control end of the filter and power compensation device. The invention can realize the constant control of the high power factors and good harmonic wave shield as well as can improve the running efficiency of the system.

Description

technical field [0001] The invention relates to a rectifying device, in particular to a green energy-saving DC power station. Background technique [0002] At present, DC power stations with AC-DC power electronic conversion devices generally have problems such as serious harmonic pollution, low power factor, low operating efficiency, and high working noise, which will inevitably cause a certain degree of waste of electric energy and bring economic benefits to enterprises. Negative impact. Moreover, the harmonic current disturbs to the power grid side, which will also cause certain pollution to the power grid and affect the safe and economical operation of the power grid. There are mainly two traditional methods for solving the above problems. One is to adopt a multiple rectification scheme, by adding a phase-shifting transformer, or configuring a phase-shifting winding on the primary side of the rectifier transformer, to achieve 12, 18, 24 or even higher 48-pulse multiple...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above-mentioned technical problems of high energy consumption, low efficiency, and high noise in the existing DC power station, the present invention proposes a green energy-saving DC power station, which can not only improve the operating efficiency of the system, but also achieve high power factor Constant control and good harmonic shielding can reduce the electromagnetic noise of the main electrical equipment in the station, and play the role of energy saving and environmental protection

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