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IGBT charging machine with power factor and harmonic wave factor correcting function

A power factor and charging machine technology, applied in harmonic reduction devices, AC networks to reduce harmonics/ripples, reactive power adjustment/elimination/compensation, etc., can solve the problem of high cost and difficulty in realizing full power range compensation , large volume and other issues, to achieve the effect of light weight, remarkable energy saving effect and small volume

Pending Publication Date: 2017-05-31
GUANGDONG ANHEWEI ELECTRIC POWER CONSTR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that it is costly and bulky, and it is difficult to realize full power range compensation

Method used

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  • IGBT charging machine with power factor and harmonic wave factor correcting function
  • IGBT charging machine with power factor and harmonic wave factor correcting function
  • IGBT charging machine with power factor and harmonic wave factor correcting function

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Embodiment Construction

[0021] The technical solutions of the present invention will be further described in detail below in conjunction with specific embodiments.

[0022] Please refer to Figure 1 to Figure 3 As shown, the hardware structure of an IGBT charger with power factor and harmonic factor active correction functions includes a three-phase AC input system 1, a three-phase input reactor 2, an IGBT three-phase inverter full bridge 3, and a DC bus capacitor 4. Output system5.

[0023] The three-phase AC input system 1 is connected to the input terminal of the three-phase input reactor 2, and the electric energy required for charging the battery is obtained from the grid, and the output terminal of the three-phase input reactor 2 is connected to the AC terminal of the IGBT three-phase inverter full bridge 3, The DC end of the IGBT three-phase inverter full bridge 3 is connected to the DC bus capacitor 4, therefore, the AC end of the IGBT three-phase inverter full bridge 3 outputs capacitive cu...

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PUM

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Abstract

The invention relates to an IGBT charging machine with a power factor and harmonic wave factor correcting function. The IGBT charging machine comprises a hardware structure and a control algorithm, wherein the hardware structure comprises a three-phase alternating current input system, a three-phase input reactor, an IGBT three-phase inverter full bridge, a direct current bus capacitor and an output system; the three-phase alternating current input system is connected with the input terminal of the three-phase input reactor, the output terminal of the three-phase input reactor is connected with the alternating current output terminal of the IGBT three-phase inverter full bridge, and the direct current output terminal of the IGBT three-phase inverter full bridge is connected with the direct current bus capacitor. The IGBT charging machine adopts a sine-wave pulse width modulation (namely SPWM) control way, so that input alternating current is sine-wave current, and harmonic current is effectively inhibited; and the total harmonic current factor in full-power range is not more than 3%, pollution to a power grid is effectively reduced, power supply safety is guaranteed, and the IGBT charging machine also has great popularization value.

Description

technical field [0001] The invention belongs to the technical field of charging equipment for new energy vehicles, and in particular relates to an IGBT charger with power factor and harmonic factor correction. Background technique [0002] In the process of large-scale promotion of new energy vehicles, large-scale rectification and charging equipment is used, which not only reduces the power factor, but also generates a large amount of harmonic current, which seriously affects the power supply quality of the line network. The reduction of power factor increases the loss of power supply and increases the capacity demand of electrical equipment; the increase of harmonic current reduces the efficiency of production, transmission and utilization of electric energy, causes electrical equipment to overheat, generates vibration and noise, and makes insulation Aging, shortened service life, and even failure. Harmonics can cause partial parallel resonance or series resonance in the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/02H02J3/18H02J3/01
CPCH02J7/022H02J3/01H02J3/1821Y02E40/30Y02E40/40
Inventor 叶楚安
Owner GUANGDONG ANHEWEI ELECTRIC POWER CONSTR CO LTD