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

Electric power source control device and heat pump device using the electric power source control device

A technology of power supply control device and control circuit, which is applied in the direction of high-efficiency power electronic conversion, output power conversion device, electrical components, etc., can solve problems such as current sensor inability to cope with device failure, etc.

Inactive Publication Date: 2010-03-24
PANASONIC CORP
View PDF1 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, there is a problem that if the two switching elements 104 and 105 in the input control circuit of the AC / DC conversion circuit 106 are turned on at the same time due to noise or the like, the AC power supply 101, the reactor 102, the switching element 104, The current sensor 103 installed in the closed loop formed by 105 cannot cope, and the device fails

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
  • Electric power source control device and heat pump device using the electric power source control device
  • Electric power source control device and heat pump device using the electric power source control device
  • Electric power source control device and heat pump device using the electric power source control device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0054] figure 1 It is a circuit diagram showing the configuration of the power supply control device according to Embodiment 1 of the present invention with a part of blocks. figure 2 It is a block diagram showing the configuration of the power supply control device according to the first embodiment.

[0055] figure 1 In the power control device according to Embodiment 1, the AC power supply 1 is connected to the full-wave rectification circuit 4 as a rectification circuit through the reactor 2, and the AC power supply 1, the reactor 2 and the full-wave rectification circuit 4 form a closed loop. The full-wave rectification circuit 4 is composed of two switching elements (IGBTs) 9 and 10 and four diodes 11 , 12 , 13 and 14 . The first switching element 9 and the second switching element 10 are connected in series, and one end of the reactor 2 is connected to the connection point thereof. The other end of the reactor 2 is connected to an output end of the AC power source ...

Embodiment approach 2

[0101] Next, use Figure 5 as well as Image 6 , the power supply control device according to Embodiment 2 of the present invention will be described. Figure 5 It is a circuit diagram showing the configuration of the power supply control device according to Embodiment 2 with a part of blocks. Image 6 It is a waveform diagram showing input current and rectified current in the power supply control device according to the second embodiment. In the power supply control device of Embodiment 2, the difference from the power supply control device of Embodiment 1 above is that the rectified current flowing from the full-wave rectification circuit 4 to the smoothing capacitor 7 is detected by the resistor 5, and the detected current value is expressed as The rectified current information is input to the control circuit 24 through the sample hold circuit 25 . Therefore, in the description of Embodiment 2 and Figure 5 Herein, the components having the same functions and structures...

Embodiment approach 3

[0109] Next, use the attached Figure 7 A power supply control device and a heat pump device according to Embodiment 3 of the present invention will be described. Figure 7It is a circuit diagram showing the configuration of the power supply control device according to Embodiment 3 with a part of blocks. The power control device of Embodiment 3 differs from the power control device of Embodiment 2 in that a smoothing circuit 26 is further provided, and the output of the second absolute value detection circuit 19 is smoothed in the smoothing circuit 26. (take the average value), and input the average value information to the control circuit 24. In this way, in the power supply control device according to Embodiment 3, after the signal indicating the absolute value of the output of the current converter 3 is input to the smoothing circuit 26 and smoothed, the average value of the input current is detected. The detected average value information of the input current is input to...

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

In an electric power source control device of the present invention, a control circuit (24), to which detecting information from an input voltage detecting unit (51), an input electric current detecting unit (52) and a rectified electric current detecting unit (53) is input, is configured to output a driving instruction signal to turn on or off switching elements, so as to make a rectified electric current from a rectifying circuit (4) be in phase with an input voltage and of such a waveform that a sinusoidal electric current waveform is rectified; and a cutoff circuit (21) is configured to cut off the driving instruction signal input from the control circuit (24) to the rectifying circuit (4) when an absolute value of an input electric current detected by an electric current transformer (3) of the input electric current detecting unit (52) is over a predetermined abnormal input electric current threshold value.

Description

technical field [0001] The present invention relates to a power source control device with reduced high-order harmonics in alternating current supplied from a power source and improved power factor, and a heat pump device having the same. Here, the heat pump device includes, for example, air-conditioning equipment such as a room air conditioner, freezing and refrigerating equipment such as a refrigerator, and heat pump water heaters. Background technique [0002] As a heat pump device having a conventional power control device that reduces harmonics in AC current supplied from a power source and improves power factor, there is, for example, an air conditioner disclosed in Japanese Patent Application Laid-Open No. 4-271299. The control method in the air-conditioning equipment is to set a reactor and a switching element that form a closed loop with the power supply in the AC / DC conversion circuit, and perform on-off control of the switching element to form a sine wave output 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): H02M7/12
CPCH02M7/219Y02B70/126H02M7/1626H02M1/4225Y02B70/10H02M1/0085
Inventor 土山吉朗京极章弘川崎智广
Owner PANASONIC CORP
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