Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

High-power high-voltage photovoltaic DC step-up converter device and control method

A DC step-up and high-power technology, which is applied to output power conversion devices, conversion of DC power input to DC power output, photovoltaic power generation, etc., can solve the difficulty of switching tube selection, engineering implementation difficulties, and complex structure and control and other problems, to achieve the effect of reducing the volume, reducing the effective value of the current, and reducing the design pressure

Active Publication Date: 2019-04-09
HEFEI UNIV OF TECH
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 1): Small monomer capacity, low boost ratio, and low efficiency
[0008] 2): The cost is high, and it is difficult to select the switching tube under high voltage
[0009] 3): The structure and control are complex, and engineering realization is difficult

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-power high-voltage photovoltaic DC step-up converter device and control method
  • High-power high-voltage photovoltaic DC step-up converter device and control method
  • High-power high-voltage photovoltaic DC step-up converter device and control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] The preferred modes of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0034] Depend on figure 1It can be seen that the high-power high-voltage photovoltaic DC boost converter device of the present invention includes: N-way photovoltaic power generation units and corresponding N-way boost conversion units, high-power three-phase square wave inverters, modular high-frequency three-phase booster Transformer unit and modular three-phase diode rectifier bridge unit. in:

[0035] The output terminal of each photovoltaic power generation unit is connected in series with the input terminal of one boost conversion unit, the output terminals of the N photovoltaic power generation units are connected in series with the input terminals of the corresponding N boost conversion units, and the output terminals of the N boost conversion units are connected to each other After parallel connection, it is connected in seri...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention proposes a high-power high-voltage photovoltaic DC step-up converter device and a control method thereof suitable for direct-current transmission of photovoltaic power stations. The high-power high-voltage photovoltaic DC step-up converter device includes N-way photovoltaic power generation units and Corresponding N-way boost conversion unit, high-power three-phase square wave inverter, modular high-frequency three-phase step-up transformer unit and modular three-phase diode rectifier bridge unit. The converter device modulation adopts open-loop square wave PAM (pulse amplitude modulation), and the pulse amplitude is controlled by the photovoltaic power generation unit and the boost conversion unit, and the control is simple and efficient.

Description

technical field [0001] The invention relates to a power electronic device for direct current convergence of photovoltaic power generation equipment, in particular to a high-power high-voltage photovoltaic direct current step-up converter device and a control method. Background technique [0002] At the end of 2015, my country's photovoltaic installed capacity reached 43.18 million kilowatts, ranking first in the world, of which 75% were concentrated photovoltaics distributed in the "Three Norths" region. It is estimated that my country's total photovoltaic capacity will exceed 150 million kilowatts in 2020. Due to the constraints of solar energy and land resources, more than two-thirds of photovoltaics will be intensively developed and transported over long distances in the "Three Norths" region. During the "13th Five-Year Plan" period, the capacity of photovoltaic power stations will continue to develop in the direction of large-scale. The capacity of a single photovoltaic...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/335
CPCH02M3/335H02M1/0074H02M1/0077Y02E10/56
Inventor 张兴赵文广刘芳
Owner HEFEI UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com