Overheat protection device and method of inverter

An overheating protection and inverter technology, applied in emergency protection circuit devices, output power conversion devices, electrical components, etc., can solve problems such as undervoltage and overheating shutdown, avoid large fluctuations in output power, and prolong grid-connected power generation time Effect

Active Publication Date: 2012-10-03
SUNGROW POWER SUPPLY CO LTD
View PDF3 Cites 21 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In view of this, it is necessary to provide an inverter overheating protection device and its overheating protection method, w

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
  • Overheat protection device and method of inverter
  • Overheat protection device and method of inverter
  • Overheat protection device and method of inverter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0043] see Figure 4 , which is a block diagram of the inverter overheat protection device provided in the preferred embodiment of the present invention. The inverter overheat protection device includes a detection module 41 , a first judging module 42 , a second judging module 43 , a third judging module 44 , a voltage boosting module 45 , a limiter module 46 and a shutdown module 47 .

[0044] The detection module 41 is used to detect the real-time temperature of the power devices of the inverter during the operation of the inverter. The first judging module 42 is used for judging whether the r...

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 invention relates to an overheat protection device and method of an inverter. The overheat protection method comprises the following steps of: detecting real-time temperature of a power device of the inverter in the operation process; judging whether the real-time temperature is greater than a first preset temperature; and if so, boosting the maximum power tracking output voltage to the right side of a maximum power point of a P-V curve, carrying out amplitude-limiting on active current giving and reducing the active current giving, wherein the output power of the inverter is reduced by reduction of the active current giving so that the temperature of the power device is reduced. The overheat protection device and method disclosed by the invention have the advantages of capabilities of carrying out rapid control on the temperature in real time, avoiding larger fluctuation of the output power of the inverter, controlling the output power of the inverter to be zero without poweroff and effectively prolonging the grid-connected generation time of the inverter.

Description

technical field [0001] The invention relates to the field of electrical equipment control, in particular to an inverter overheat protection device and an overheat protection method thereof. Background technique [0002] There are two main methods of inverter overheating protection: [0003] Method 1. According to the thermal test, a temperature threshold T is determined under the condition of ensuring the safety of the power device. The inverter detects the temperature of the power device during operation. If the detected temperature exceeds the temperature threshold T, the inverter Turn off to avoid overheating and damage to the inverter power device; [0004] Method 2, according to the thermal test, two temperature thresholds T1 and T2 are determined under the condition of ensuring the safety of power devices, and T1 is less than T2, such as figure 1 shown. The inverter detects the temperature of the power device during operation. When the detected temperature exceeds t...

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
IPC IPC(8): H02M1/32H02H7/122
Inventor 王航傅立秦吴田进汪洪亮余鸿倪华
Owner SUNGROW POWER SUPPLY CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap