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New energy power generation direct drive system

A photovoltaic power generation system and wind power generation system technology, applied in wind power generation, photovoltaic power generation, control systems, etc., can solve problems such as difficulty in nearby consumption, unstable power supply, and inability to load power supply, so as to reduce electricity cost and use flexibly , to achieve the effect of accurate control

Pending Publication Date: 2021-12-28
XIAN SHAANGU POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention solves the problem that the current photovoltaic power generation system and wind power generation system both generate intermittently, and are limited by the natural environment and weather, the power supply is unstable, and it is impossible to supply power to continuously running loads alone, especially for large-scale isolated grid-operated photovoltaic power generation systems and The wind power generation system provides a direct drive system for new energy power generation to accommodate difficult technical problems nearby

Method used

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  • New energy power generation direct drive system
  • New energy power generation direct drive system
  • New energy power generation direct drive system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] Such as figure 1 As shown, a new energy power generation direct drive system includes a power management system 5, a step-up transformer 6, a frequency converter 7, a first motor 8, a second motor 9, a gearbox 10, an energy storage system 3, and a control system 4, And photovoltaic power generation system 1 and wind power generation system 2,.

[0078] Among them, the power management system 5 is connected to the photovoltaic power generation system 1 and the wind power generation system 2 respectively, and is used to adjust the power management of the photovoltaic power generation system 1 and / or the wind power generation system 2, so that the photovoltaic power generation system 1 and the wind power generation system 2 follow the preset Parameter conditions work. Both the output end of the photovoltaic power generation system 1 and the output end of the wind power generation system 2 are connected to the input end of the step-up transformer 6, and the output end of t...

Embodiment 2

[0083] Such as figure 2 As shown, the difference from Embodiment 1 of the present invention is that the first motor 8 and the second motor 9 are not directly connected through a coupling, but are connected through a synchronous clutch 13 .

[0084] The speed of the first motor 8 matches the speed of the second motor 9 and is connected by a synchronous clutch. When the speed of the first motor 8 is greater than or equal to the speed of the second motor 9, the immediate input of the first motor 8 can be realized. When the photovoltaic power generation system 1 and / or when the power generation energy of the wind power generation system 2 is insufficient, the synchronous clutch 13 automatically cuts off the first motor 8 to ensure the reliable operation of the load dragged by the second motor 9. Similarly, in order to have a stable voltage and For power output, the photovoltaic power generation system 1 and / or wind power generation system 2 can be equipped with an energy storage...

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Abstract

The invention belongs to an electric drive system, and provides a new energy power generation direct drive system, and aims to solve the problems that a photovoltaic power generation system and a wind power generation system both intermittently generate power, cannot independently supply power to continuously operating loads and are difficult to consume nearby. The direct drive system comprises an electric quantity management system, a boosting transformer, a frequency converter, a first motor, a second motor, a gearbox, and a photovoltaic power generation system and / or a wind power generation system the electric quantity management system is connected with the photovoltaic power generation system and / or the wind power generation system, the output end of the photovoltaic power generation system and / or the output end of the wind power generation system are / is connected with the input end of the boosting transformer, the output end of the boosting transformer is connected with the input end of the frequency converter, the first motor is connected with the output end of the frequency converter, the second motor is driven by an external power grid, the first motor and the second motor are connected through a coupler or a synchronous clutch, the output end of the second motor is connected with an external load, and the first motor and the second motor operate at the same speed through a corresponding control method.

Description

technical field [0001] The invention belongs to an electric drive system, and in particular relates to a direct drive system for new energy power generation. Background technique [0002] A photovoltaic power generation system is a power generation system that uses solar cells to directly convert solar energy into electrical energy. It is mainly composed of photovoltaic modules, combiner boxes, DC cabinets, AC power distribution cabinets, inverters, energy storage systems, step-up transformers, high-voltage switchgear, communication and monitoring systems, etc. It is characterized by high reliability, long service life, no pollution to the environment, independent power generation and grid-connected operation. The wind power generation system uses the wind to drive the blades of the windmill to rotate, and then increases the rotation speed through the speed increaser to promote the generator to generate electricity. It is mainly composed of the nose, swivel, empennage and b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P27/00H02P27/08H02P5/46H02P5/50H02P1/58H02P21/00H02P21/34H02S10/12H02S10/20H02J3/38H02J3/28
CPCH02P27/08H02P27/00H02P5/46H02P5/50H02P21/0003H02P21/34H02P1/58H02S10/20H02S10/12H02J3/28H02J3/381H02J3/388H02J2300/24H02J2300/28H02J2300/40Y02E10/56Y02E10/76Y02E70/30
Inventor 李宏安刘金平陈党民贾亚妮陈余平王航李勇孙鸿声田渭蓉周宁王小军强科
Owner XIAN SHAANGU POWER