Centralized DC power supply control system and method of economically controlling power consumption

• US 9,543,765 B2
• Filed: 10/07/2013
• Issued: 01/10/2017
• Est. Priority Date: 10/07/2012
• Status: Active Grant

• Current Assignee: Lightstar Information Co., Ltd.
• Original Assignee: Lightstar Information Co., Ltd.
• Inventors: Lin, Ming-Yi
• Primary Examiner(s): Fureman, Jared
• Assistant Examiner(s): Pham, Duc M
• Application Number:
  US14/047,378
• Publication Number:
  US 20140097682A1
• Time in Patent Office: 1,191 Days
• Field of Search: 307/26
• US Class Current: 1/1
• CPC Class Codes: H02J 1/10 Parallel operation of dc sources
• CPC Class Codes: H02J 4/00 Circuit arrangements for mains or distribution networks not specified as ac or dc

Abstract

An economical centralized DC power consumption control system is used to separate electric power into an AC circuit for high-power-consumption electric appliances such as TV set, refrigerator, washing machine, and air conditioner and a DC circuit for low-power-consumption electric appliances such as lamp, electric fan, notebook computer, tablet computer, mobile phone, and digital camera. The DC circuit is equipped with multiple high-powered power supplies, each of which transforms commercial power to DC power, provides electricity to various low-power-consumption electric appliances, and directly links the electric appliances for supply of electric energy without individual rectifiers/transformers.

Claims

1. A method of economical centralized DC power consumption control, comprising steps as follows:

separating supplied electric power into an AC circuit for high-power-consumption electric appliances including TV set, refrigerator, washing machine and air conditioner and a DC circuit for low-power-consumption electric appliances including lamp, electric fan, notebook computer, tablet computer, mobile phone and digital camera;

transforming commercial power to DC power via a high-powered power supply in said DC circuit, and providing electricity to all low-power-consumption electric appliances;

restricting total power consumption of electric appliances activated simultaneously for energy saving as per modulated power of said power supply,

wherein said DC circuit is used to modulate output voltage or current which matches running of an electric appliance for energy saving as per a distance between said power supply and said electric appliance.

2. The method of economical centralized DC power consumption control according to claim 1, wherein said DC circuit links multiple power supplies which are connected in parallel and still work even if one of the multiple power supplies fails.

3. The method of economical centralized DC power consumption control according to claim 1, wherein said DC circuit contributes to less energy loss attributed to AC-to-DC transfer by modulating a distance between said power supply and said electric appliance.

4. The method of economical centralized DC power consumption control according to claim 1, wherein said power supply provides output voltages between 10V and 60V.

5. The method of economical centralized DC power consumption control according to claim 1, wherein said power supply is connected to green energy installations such as wind power equipment and solar energy equipment for less dependence on commercial power or supply of DC power during outage of commercial power.

6. An economical centralized DC power consumption control system separating supplied electric power into an AC circuit and a DC circuit,

wherein said DC circuit is equipped with a high-powered power supply for all low-power-consumption electric appliances including lamp, electric fan, notebook computer, mobile phone and digital camera and provides common voltages to said electric appliances directly without requiring rectifiers/transformers,

wherein said power supply contributes to less energy loss attributed to AC-to-DC transfer by modulating a distance between said power supply and said electric appliance.

7. The economical centralized DC power consumption control system according to claim 6, wherein said DC circuit links multiple power supplies which are connected in parallel and still work even if one of the multiple power supplies fails.

8. The economical centralized DC power consumption control system according to claim 6, wherein said power supply comprises a rectifier/transformer unit and a power output control unit, and said rectifier/transformer unit transforms commercial power to DC power which is delivered to said electric appliances for limited total output power via said power output control unit.

9. The economical centralized DC power consumption control system according to claim 8, wherein said power output control unit of said power supply is connected to green energy installations such as wind power equipment and solar energy equipment for less dependence on commercial power or supply of DC power during outage of commercial power.

10. The economical centralized DC power consumption control system according to claim 9, wherein said power output control unit links batteries which are used to store electricity generated by said green energy installations for contingent use in case of oversupply of electric power.

11. The economical centralized DC power consumption control system according to claim 6, wherein said electric appliance is equipped with a power limiter which prevents said electric appliance from failure due to high electric power exported by said power supply.

12. The economical centralized DC power consumption control system according to claim 6, wherein said power supply is one power supply with its output power modulated.

13. The economical centralized DC power consumption control system according to claim 6, wherein said electric appliance comprises a plurality of LED lamps which directly link said power supply for electric energy without requiring rectifiers/transformers, referring to magnitude of electric power of said power supply for change of LED lamps'"'"' count or illumination, energy saving, and dimming.