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

A cooling method for active power filter

A technology of power filter and heat dissipation method, applied in cooling/ventilation/heating transformation, modification with gaseous coolant, etc., can solve problems such as excessive occupation of hardware resources, high fan speed, abnormal fan noise, etc., to avoid hardware The effect of resources, improving service life, and simple algorithm

Active Publication Date: 2017-12-26
中船鹏力(南京)新能源科技有限公司
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. Determine the speed regulation of the fan according to the compensation current. Due to the large number of current divisions and the small difference in duty cycle between different gears, the fan speed regulation system is unstable and the fan makes abnormal noise.
[0004] 2. The size of the compensation current has no unique relationship with the heating of the active filter device. Factors such as the external ambient temperature and the switching frequency of the power device also directly affect the heating of the active filter device. For example, the temperature in winter is low and the temperature of the device is also low. There is no need to use high speed for heat dissipation, resulting in excessive noise and waste of energy
[0005] 3. Determining the speed regulation of the fan according to the current cannot guarantee the optimal speed of the active filter device, so it is difficult to solve the heat dissipation problem fundamentally, and it will also cause noise due to the high fan speed
[0006] 4. At present, most of the fan speed control tables are used to control the fan speed, which takes up too much hardware resources

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
  • A cooling method for active power filter
  • A cooling method for active power filter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0021] The rated output current of the active power filter in this embodiment is 60A, the target temperature value of the power device is 90°C, and the target temperature value of the reactor is 120°C.

[0022] The specific implementation steps are as follows:

[0023] In the first step, according to the rated compensation current 60A of the active power filter, set 4 fan speed regulation gears.

[0024] In the second step, the rated compensation current 60A of the active power filter is used as the output current of the fourth gear, and the current of the other three gears is calculated by dividing the rated compensation current by the product of the gear number and the gear value , were obtained: 15A, 30A, 45A.

[0025] The third step is to determine the reference speed of the gear with the output current of 60A. As shown in Table 1, af...

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 discloses a radiating method for an active power filter. The fan rotating speeds of the active power filter are graded; the deviation between actual temperature values of a power device and an electric reactor in each level and the target temperature values of the power device and the electric reactor under rated current is detected in real time; the duty ratio of the fan rotating speeds under different working conditions is adjusted by adopting a PI algorithm in a dichotomy capacity-reducing manner; and the fan rotating speeds are dynamically adjusted to achieve the purpose of intelligent heat dissipation. According to the radiating method for the active power filter, the fan of the active power filter can be in the optimal rotating speed, so that noise in operation can be lowered, the service life of the fan can be prolonged, and energy sources are saved as well.

Description

technical field [0001] The invention relates to a heat dissipation technology of a filter, in particular to a heat dissipation method of an active power filter. Background technique [0002] In recent years, with the increasing compensation capacity of active power filters, traditional natural air cooling has been unable to solve the heat dissipation problem caused by switching losses of power devices. At present, most of the active filter devices put into operation use forced air cooling, and the control method often adopts fixed duty cycle modulation according to the compensation feedback current. This method mainly has the following problems: [0003] 1. Determine the speed regulation of the fan according to the compensation current. Due to the large number of current divisions and the small difference in duty cycle between different gears, the fan speed regulation system is unstable and the fan makes abnormal noise. [0004] 2. The size of the compensation current has n...

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): H05K7/20
CPCH05K7/20209
Inventor 李刚邹爱龙孙小平刘伟刘嘉吴平志刘婉丽
Owner 中船鹏力(南京)新能源科技有限公司
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