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Energy inversion grid-connected control device and control method

A technology of a control device and a control method, which is applied in the direction of circuit devices, output power conversion devices, and reversible conversion equipment, etc., which can solve the problems of late start and achieve the effect of simplifying the control circuit

Active Publication Date: 2019-08-09
张锐明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the late start of our country's emerging energy power production technology, the key technologies have yet to be perfected, and the current new energy power generation technology cannot be widely promoted. Therefore, the research and development and application of new energy power generation technology still needs engineering and technical personnel make further efforts

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  • Energy inversion grid-connected control device and control method
  • Energy inversion grid-connected control device and control method
  • Energy inversion grid-connected control device and control method

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Embodiment Construction

[0038] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0039] The present invention adopts an energy inverter grid-connected control device, such as figure 1 As shown, it includes bidirectional DC / AC modules and power grids that are sequentially connected to the new energy power station. The bidirectional DC / AC module adopts a three-phase four-arm bridge circuit. The / AC module is also connected to the improved proportional resonant cavity controller with built-in fuzzy;

[0040] The power grid can supply energy to the new energy power station through the DC / AC module, and can also feed back the electric energy generated by the new energy power station to the power grid through the DC / AC module;

[0041] The bidirectional DC / AC module includes a soft start circuit, a voltage stabilizing circuit, and an inverter circuit connected in parallel in sequence. The inverter circuit is connected to a fil...

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Abstract

The invention discloses an energy inversion grid-connected control device. The device comprises a bidirectional DC / AC module and a power grid, wherein the bidirectional DC / AC module and the power gridare sequentially connected with a new energy power station. The bidirectional DC / AC module adopts a three-phase four-bridge arm bridge circuit. The bidirectional DC / AC module can be used for bidirectional circulation of energy. The bidirectional DC / AC module is connected with an improved proportional resonant controller with fuzzy. In the abc coordinate system, the improved proportional resonantcontroller based on fuzzy control directly controls three-phase current on the alternating current side. The proportional resonant controller not only has the advantages of a PI controller, but also can track an alternating current component without static difference.

Description

technical field [0001] The invention belongs to the technical field of energy grid connection, and in particular relates to an energy inverter grid connection control device, and also relates to an energy inverter grid connection control method. Background technique [0002] In recent years, the energy crisis and environmental pollution problems have become increasingly severe, and countries are vigorously developing renewable and clean energy such as solar energy, wind energy, and water energy. Converting renewable energy into electrical energy and feeding it into the grid with high quality is the key to the development and utilization of renewable energy. At present, many countries in the world are gradually replacing the previous fossil energy with new energy or recyclable energy, and have achieved remarkable achievements. In our country, people's daily life and social development and construction are inseparable from stable and efficient power supply. Due to the needs o...

Claims

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Application Information

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IPC IPC(8): H02J3/38H02M7/72
CPCH02J3/382H02M7/72H02M1/0012Y02B70/10
Inventor 张锐明王伟黄亮
Owner 张锐明
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