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Double PWM inverter with energy capable of bidirectionally flowing

A bi-directional flow and inverter technology, applied in the direction of reversible conversion equipment, AC power input conversion to DC power output, wind power generation, etc., can solve the problems of photovoltaic power supply and main power supply, and improve the quality of power supply and operation stability, low harmonic pollution, and improved power conversion efficiency

Inactive Publication Date: 2010-02-24
上海中区节电科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since most of the power used by the station is AC load, it is difficult for the photovoltaic power supply powered by DC power to be the main power supply for the power used by the station.

Method used

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  • Double PWM inverter with energy capable of bidirectionally flowing
  • Double PWM inverter with energy capable of bidirectionally flowing
  • Double PWM inverter with energy capable of bidirectionally flowing

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Embodiment Construction

[0017] Such as figure 1 As shown, the dual-PWM inverter with bi-directional flow of energy in the present invention includes an AC / DC module, a DC_Bus module, a DC / AC module, and a new energy access unit. The AC / DC module, DC / AC module, and new The energy access units are respectively connected to the DC_Bus modules. The AC / DC module is connected to the grid. The DC / AC module is connected to the user end. The new energy access unit is connected with solar energy, wind energy or energy storage station.

[0018] The working principle of the dual-PWM inverter with bi-directional energy flow is as follows: solar energy, wind energy, energy storage station and other new energy sources are connected to the DC_BUS module from the new energy access unit, and through the AC / DC module and the DC / AC module, the The energy can be fed back to the grid, and can also be supplied to the user end to realize two-way transmission of energy.

[0019] The converter on the grid side is aimed at...

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Abstract

The invention relates to a double PWM inverter with energy capable of bidirectionally flowing, which comprises an AC / DC module, a DC_Bus module, a DC / AC module and a new energy access unit, wherein the AC / DC module, the DC / AC module and the new energy access unit are connected with the DC_Bus module respectively. Compared with the prior art, the double PWM inverter has high power factor and low harmonic pollution, particularly the bidirectional flowing characteristic of the energy, and is suitable to be used in solar grid connection; and the novel power electronic technology can effectively reduce the device loss, improve the electric energy conversion efficiency of an electric energy transducer, inhibit most electric energy quality problems of a low-voltage distribution network, improve the power supply quality and the operation stability of the low-voltage distribution network, and provides satisfactory power supply sources, power supply stability and power supply electric energy quality for power supply users.

Description

technical field [0001] The invention relates to a double PWM inverter, in particular to a double PWM inverter with bidirectional flow of energy. Background technique [0002] In my country's "Eleventh Five-Year Plan", saving energy, developing renewable energy, and making full use of natural resources have become hard targets. Governments at all levels and enterprises are hard assessed, and the utilization of green energy has been placed in a very high position. So we have to be fully prepared. The ensuing use of wind energy and solar energy will be carried out in large numbers and vigorously. [0003] Solar energy is rich in resources, no need for storage and transportation, and free to use, without any pollution to the environment. Solar energy is a green primary energy source. It is our human responsibility to make full use of this energy. [0004] Solar power generation will inevitably develop and use, and grid-connected power generation is the most troublesome thin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/72H02M7/797
CPCY02E10/76
Inventor 陆融邱继东潘国美张露维张小越
Owner 上海中区节电科技有限公司
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