Environment-friendly and energy-saving DC power station

A DC and power station technology, applied in the direction of converting AC power input to DC power output, electrical components, output power conversion devices, etc. Loss, high power factor, effect of regulation and control

Inactive Publication Date: 2011-01-19
HUNAN UNIV SCI PARK CO LTD +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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  • Environment-friendly and energy-saving DC power station

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Embodiment Construction

[0010] see figure 1 , the rectifier transformer 5 in the present invention adopts a three-winding structure type, and its primary side winding adopts a star connection to connect with the output end of the on-load voltage regulator 4, and its secondary side low-voltage winding adopts the same phase and antiparallel connection, and the output end is in phase with the rectifier 13 The medium voltage winding on the secondary side adopts delta connection, and the output terminal is connected to the filter and power compensation device 12. The filter and power compensation device 12 is mainly composed of a controllable reactor 6 and a 5 / 7 double tuned filter 7 (or 5 sub-single tuned filter and 7th single-tuned filter), 11 / 13th double-tuned filter 8 (or 11th single-tuned filter and 13th single-tuned filter), high-pass filter 9 and parallel power capacitor 10 ; The filter device 11 mainly suppresses the main sub-characteristic harmonics generated by the rectifier 13, and compensates ...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M7/00H02J5/00
CPCY02E40/30
Inventor 罗隆福张志文熊芝耀许加柱李勇董书大邵鹏飞刘文业
Owner HUNAN UNIV SCI PARK CO LTD
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