POWER REGULATOR AND REMOTE POWER CONTROL DEVICE

• US 20110316498A1
• Filed: 03/25/2010
• Published: 12/29/2011
• Est. Priority Date: 03/25/2009
• Status: Active Grant

• Current Assignee: PMD Networks, Inc.
• Original Assignee: PMD Networks, Inc.
• Inventors: Lee, Sang Cheol, Kim, Young Sic, Bae, Jong Sik
• Granted Patent: US 8,471,489 B2
• Time in Patent Office: Days
• US Class Current: 323/258
• CPC Class Codes: G08C 17/00 Arrangements for transmitting signals characterised by the use of a wireless electrical link
• CPC Class Codes: G08C 2201/10 Power supply of remote control devices
• CPC Class Codes: H02M 5/12 for conversion of voltage or current amplitude only
• CPC Class Codes: H02P 13/06 by tap-changing; by rearranging interconnections of windings

Abstract

A power regulator 130 includes a power input line 181, a primary winding connected to the power input line 181 and wound on a core, a secondary winding, at least part of the secondary winding being in common with the primary winding, at least one tap 132, 133, and 134 connected to the primary winding at a predetermined position thereof to specify respective numbers of turns of the primary winding and the secondary winding, at least one switch S1, S2, and S3 having one end connected respectively to the at least one tap 132, 133, and 134 and another end connected to a common line 183 to change the respective numbers of turns of the primary winding and the secondary winding, and an output line 182 for outputting power that the secondary winding generates as the secondary winding is excited by the primary winding, wherein the respective numbers of turns of both the primary winding and the secondary winding are determined as one of the at least one switch S1, S2, and S3 is closed.

Claims

1. A power regulator comprising:

a power input line;

a primary winding connected to the power input line and wound on a core;

a secondary winding, at least part of the secondary winding being in common with the primary winding;

at least one tap connected to the primary winding at a predetermined position thereof to specify respective numbers of turns of the primary winding and the secondary winding;

at least one switch having one end connected respectively to the at least one tap and another end connected to a common line to change the respective numbers of turns of the primary winding and the secondary winding; and

an output line for outputting power that the secondary winding generates as the secondary winding is excited by the primary winding,

wherein the respective numbers of turns of both the primary winding and the secondary winding are determined as one of the at least one switch is closed.

2. The power regulator according to claim 1, wherein, the switch includes one of a TRIAC, an SCR, a relay and an IC, the at least one tap and the at least one switch are connected from a lower end of the primary winding, highest power is transferred to the secondary winding when a first switch from the lower end of the primary winding is closed, lowest power is transferred to the secondary winding when a last switch from the lower end of the primary winding is closed.

4. A remote power control device comprising:

the power regulator according to claim 1;

a sensor unit connected to at least one of a power input line and a power output line of the power regulator to sense at least one of an input power and an output power; and

a controller for comparing power sensed by the sensor unit with a preset value and transmitting a control signal for changing output power of the power regulator based on the comparison.

5. The remote power control device according to claim 4, wherein the sensor unit senses current or voltage applied to at least one of the power input line and the power output line.

6. The remote power control device according to claim 4, wherein the controller switches one of the at least one switch of the power regulator to change the output power of the power regulator.

7. The remote power control device according to claim 4, wherein the controller uniformly maintains the output power of the power regulator for a predetermined time required to start a load connected to the power output line, the controller decreases the output power if the power sensed by the sensor unit is higher than the preset value and increases the output power if the power sensed by the sensor unit is less than the preset value.

10. The remote power control device according to claim 4, further comprising a wired or wireless communication unit for transmitting information regarding the input power or the output power sensed by the sensor unit out of the remote power control device and receiving information regarding change of the output power of the power regulator from outside the remote power control device.

11. The remote power control device according to claim 10, further comprising a display for displaying information regarding the power sensed by the sensor unit, and a remote monitoring controller for remotely controlling the output power of the power regulator based on user input.

13. The remote power control device according to claim 5, further comprising a wired or wireless communication unit for transmitting information regarding the input power or the output power sensed by the sensor unit out of the remote power control device and receiving information regarding change of the output power of the power regulator from outside the remote power control device.

14. The remote power control device according to claim 13, further comprising a display for displaying information regarding the power sensed by the sensor unit, and a remote monitoring controller for remotely controlling the output power of the power regulator based on user input.

3. (canceled)

8. (canceled)

9. (canceled)

12. (canceled)