KR101594508B1 - Power supply apparatus - Google Patents

Power supply apparatus Download PDF

Info

Publication number
KR101594508B1
KR101594508B1 KR1020140144518A KR20140144518A KR101594508B1 KR 101594508 B1 KR101594508 B1 KR 101594508B1 KR 1020140144518 A KR1020140144518 A KR 1020140144518A KR 20140144518 A KR20140144518 A KR 20140144518A KR 101594508 B1 KR101594508 B1 KR 101594508B1
Authority
KR
South Korea
Prior art keywords
input
control switch
power supply
capacitor
output
Prior art date
Application number
KR1020140144518A
Other languages
Korean (ko)
Inventor
원주호
조영호
권동영
이상곤
고형호
Original Assignee
한국항공우주연구원
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 한국항공우주연구원 filed Critical 한국항공우주연구원
Priority to KR1020140144518A priority Critical patent/KR101594508B1/en
Application granted granted Critical
Publication of KR101594508B1 publication Critical patent/KR101594508B1/en

Links

Images

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F3/00—Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties
    • G05F3/02—Regulating voltage or current
    • G05F3/08—Regulating voltage or current wherein the variable is dc
    • G05F3/10—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics
    • G05F3/16—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J1/00—Circuit arrangements for dc mains or dc distribution networks
    • H02J1/02—Arrangements for reducing harmonics or ripples

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Nonlinear Science (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Direct Current Feeding And Distribution (AREA)

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a power supply apparatus, and more particularly, to a power supply apparatus capable of stably supplying power to an output terminal while solving the problem of an input current, The power supply device according to the embodiment of the present invention includes a plurality of capacitors connected between an input terminal and an output terminal and sequentially charged by an input power inputted from the input terminal. When each of the plurality of capacitors is charged with a reference voltage A first output control switch connected between the power supply unit and the output terminal, a second output control switch connected between the input terminal and the output terminal, and a second output control switch connected between the input terminal and the output terminal, And a control unit for turning on both the first output control switch and the second output control switch. The second output control switch may be a latch relay.

Description

POWER SUPPLY APPARATUS

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a power supply apparatus, and more particularly, to a power supply apparatus capable of stably supplying power to an output terminal while solving the problem of an input current,

All electrical components of satellites are subjected to electromagnetic compatibility tests. Electromagnetic compatibility During the experiment, it is necessary to pass an experiment on the input current generated in the electric box at the initial stage of the power supply, so that it can be used for the satellite.

FIG. 1 is a circuit diagram schematically showing a power supply device of a conventional satellites electric field box. As shown in FIG. 1, conventionally, an input voltage is input to a stabilization capacitor Co after filtering an input voltage by an input current reduction filter 1 And the voltage charged in the stabilizing capacitor Co was outputted as the output voltage.

The larger the capacitance of the stabilizing capacitor Co is, the greater the stability of the output voltage. However, the larger the capacitance of the capacitor is, the larger the incoming current becomes to the capacitor at the moment of turning on the power, and the load is applied to the power supply.

On the contrary, when the capacitance of the stabilization capacitor Co is reduced, there is a problem that the input current is reduced but the stability of the output voltage is lowered.

In order to solve this problem, Korean Patent No. 10-1080742 discloses a first power supply unit including a first capacitor connected between an input terminal and an output terminal to charge an input voltage, and a second power supply unit connected between the input terminal and the output terminal, A second power supply unit in which the input voltage of the input terminal is charged to the second capacitor when the voltage of the first capacitor of the first power supply unit reaches a first reference voltage, And a switch for output control that is turned on when the voltage of the second capacitor of the second power supply unit reaches the second reference voltage.

However, in the power supply device disclosed in Korean Patent No. 10-1080742, the power source of the comparator is separately supplied. However, if a momentary problem occurs in the power supply of the comparator, there may be a problem that the supply of the main power supply itself is cut off.

However, there is a problem that the same input current problem may occur if a stabilizing capacitor is used for the comparator power input for stable operation of the comparator power supply.

Korean Patent No. 10-1080742

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a power supply device capable of stably supplying power to an output terminal while solving the problem of an input current, even if a problem occurs in the power supply of the comparator.

According to an aspect of the present invention, there is provided a power supply apparatus including a plurality of capacitors connected between an input terminal and an output terminal and sequentially charged by an input power input from the input terminal, A first output control switch connected between the power supply unit and the output terminal, a second output control switch connected between the input terminal and the output terminal, and a second output control switch connected between the input terminal and the output terminal, And a control unit for turning on both the first output control switch and the second output control switch when the first control signal is outputted.

The second output control switch may be a latch relay.

The power supply apparatus may further include an input control switch connected between the input terminal and the power supply unit, and when the second control signal for turning on the input control switch is inputted from the outside, the second output control switch may be turned off .

When the second output control switch is turned on by the control unit, the second output control switch can maintain the on state until the second control signal is input.

The power supply unit may include a first power supply unit and a second power supply unit.

The first power supply unit may include a first capacitor for charging an input power input from the input terminal and a first reference voltage corresponding to a charging voltage of the first capacitor and a capacitance of the first capacitor, And may include a first comparator.

The second power supply unit includes a second capacitor for charging the input power input from the input terminal when a switch to be turned on and off is turned on in accordance with the output of the first comparator and a second capacitor for charging the second capacitor And a second comparator that receives a second reference voltage corresponding to the first reference voltage and outputs a comparison result.

The second comparator may output the first control signal when the second capacitor is charged with the second reference voltage.

The first power supply may further include a first diode and a second diode connected in series between the input control switch and the first output control switch.

Wherein the anode of the first diode is connected to the input control switch, the cathode of the second diode is connected to the first output control switch, the contact of the anode of the first diode and the anode of the second diode, 1 capacitor is connected to a first input terminal of the first comparator and the first reference voltage may be input to a second input terminal of the first comparator.

The second power supply may further include a third diode and a fourth diode connected in series between the input control switch and the first output control switch.

The anode of the third diode is connected to the input control switch through a switch which is turned on and off according to the output of the first comparator, the cathode of the fourth diode is connected to the first output control switch, The second capacitor and the first input terminal of the second comparator are connected to the cathode of the fourth diode and the anode of the fourth diode, and the second reference voltage is input to the second input terminal of the second comparator have.

The first capacitor and the second capacitor may be connected in parallel.

According to the present invention, it is possible to provide a power supply device capable of stably supplying power to an output terminal while solving the problem of the input current, even if a problem occurs in the power supply of the comparator.

1 is a circuit diagram schematically showing a power supply device of a conventional satellites electric field box.
2 is a view for explaining a power supply apparatus according to an embodiment of the present invention.
3 is a view for explaining a power supply apparatus according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise. Also, the terms " part, "" module," and " module ", etc. in the specification mean a unit for processing at least one function or operation and may be implemented by hardware or software or a combination of hardware and software have.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention.

2 is a view for explaining a power supply apparatus according to an embodiment of the present invention.

2, the power supply apparatus 1 according to the present invention includes a power supply unit including a first power supply unit 10 and a second power supply unit 20, a control unit 30, a first output control switch Sout_1 ), A second output control switch Sout_2, and an input control switch (Sin).

The input control switch Sin is connected at one end to the input voltage and at the other end to the first power supply 10.

The input control switch Sin is turned on and off according to an input switch-on command MAIN ON CMD and an input switch OFF command MAIN OFF CMD inputted from the outside, Supply to the supply unit.

The first power supply unit 10 may include a first diode D1, a second diode D2, a first capacitor C1, and a first comparator 11.

The first diode D1 and the second diode D2 are connected in series.

The anode of the first diode D1 is connected to the input control switch Sin and the cathode of the second diode D2 is connected to the first output control switch Sout1.

The first capacitor C1 and the negative input terminal of the first comparator 11 are connected to the contact of the cathode of the first diode D1 and the anode of the second diode D2, And the first reference voltage V1_ref is input to the (+) input terminal. Here, the first reference voltage may be set corresponding to the capacity of the first capacitor C1.

The first comparator 11 compares the charging voltage of the first capacitor C1 input to the negative input terminal with the first reference voltage V1_ref and outputs the comparison result. More specifically, the first comparator 11 generates a control signal for turning on the charge control switch S1 when the charge voltage of the first capacitor C1 input to the negative input terminal reaches the first reference voltage V1_ref Output.

The second power supply unit 20 may include a third diode D3, a fourth diode D4, a second capacitor C2, a second comparator 21 and a charge control switch S1.

The third diode D3 and the fourth diode D4 are connected in series.

The anode of the third diode D3 is connected to the input control switch Sin through the charge control switch S1 and the cathode of the fourth diode D4 is connected to the first output control switch Sout1.

The second capacitor C2 and the negative input terminal of the second comparator 21 are connected to the contact between the cathode of the third diode D3 and the anode of the fourth diode D4, And the second reference voltage V2_ref is input to the (+) input terminal. Here, the second reference voltage may be set corresponding to the capacitance of the second capacitor C2.

The charge control switch S1 is connected at one end to the input control switch Sin and at the other end to the anode of the third diode D3. The charge control switch S1 is turned on / off in accordance with the output signal of the first comparator 11. The charge control switch S1 is turned off until the first capacitor C1 is charged with the first reference voltage and when the first capacitor C1 is charged with the first reference voltage, the output of the first comparator 11 So that the input voltage can be charged to the second capacitor C2.

The second comparator 21 compares the charging voltage of the second capacitor C2 input to the negative input terminal with the second reference voltage V2_ref and outputs the result. More specifically, the second comparator 21 outputs a control signal to the control unit 30 when the charging voltage of the second capacitor C1 input to the negative input terminal reaches the second reference voltage V2_ref.

The control unit 30 outputs a control signal to turn on the first output control switch Sout_1 and the second output control switch Sout_2 when the control signal is outputted from the second comparator 21, Sout_1) and the second output control switch (Sout_2).

The second output control switch Sout_2 is constituted by a latch relay and is turned on according to the control signal output from the control unit 30, and remains on until the OFF signal is inputted from the outside. The second output control switch Sout_2 may be configured to be turned off when an input switch-on command (MAIN ON CMD) for turning on the input control switch Sin of the power supply device 1 is input from the outside.

The first comparator 11 and the second comparator 21 are supplied with driving power through an auxiliary power source different from the input power source (main power source) input from the input terminal through the input control switch Sin .

The operation of the power supply device 1 illustrated in Fig. 2 will be described in detail.

First, when an input switch-on command (MAIN ON CMD) is inputted from the outside, the input control switch Sin is turned on and the second output control switch Sout_2 is turned off. On the other hand, the first output control switch Sout_1 maintains the off state because the control unit 30 does not output a control signal for turning on the switch.

Next, when the input voltage is input at the input terminal, the voltage is charged to the first capacitor C1 via the input control switch Sin and the first diode D1. The voltage of the negative terminal of the first comparator 11 rises as the voltage of the first capacitor C1 is charged and the positive terminal of the first capacitor C1 is connected to the positive terminal of the first comparator 11, The first reference voltage V1_ref set to correspond to the capacity of the first reference voltage V1_ref.

When the voltage charged in the first capacitor C1 becomes equal to or greater than the first reference voltage V1_ref, the first comparator 11 outputs a control signal for turning on the charge control switch S1 to the charge control switch S1 .

When the charge control switch S1 is turned on by the output signal of the first comparator 11, the voltage is charged to the second capacitor C2 via the third diode D3 of the second power supply unit 20. [ The voltage of the negative terminal of the second comparator 21 rises as the voltage of the second capacitor C2 is charged and the voltage of the second capacitor C2 is connected to the positive terminal of the second comparator 21, The second reference voltage V2_ref set to correspond to the capacity of the second reference voltage V2_ref is input.

The second comparator 21 outputs a control signal to the control unit 30 when the voltage charged in the second capacitor C2 becomes equal to or higher than the second reference voltage V2_ref.

Then, the control unit 30 outputs a control signal for turning on the first output control switch Sout_1 and the second output control switch Sout_2 so that the first output control switch Sout_1 and the second output control switch Sout_2 Everyone turns on.

When both the first output control switch Sout_1 and the second output control switch Sout_2 are turned on, the input power input at the input terminal is outputted to the output terminal.

3 is a view for explaining a power supply apparatus according to another embodiment of the present invention.

3, the power supply unit includes the first power supply unit 10 and the second power supply unit 20. However, as illustrated in FIG. 3, the plurality of power supply units 101_1, 101_2, ..., 101_N-1, 101_N-2).

First, when an input switch-on command (MAIN ON CMD) is inputted from the outside, the input control switch Sin is turned on and the second output control switch Sout_2 is turned off. On the other hand, the first output control switch Sout_1 maintains the off state because the control unit 30 does not output a control signal for turning on the switch.

The first capacitor C1, the second capacitor C2, ... included in the plurality of power supply units 101_1, 101_2, ..., 101_N-1, and 101_N-2, The N-1th capacitor Cn-1, and the Nth capacitor Cn are sequentially charged.

The first comparator 101_1, the second comparator 101_2, The N-1th comparator 101_n-1 and the Nth comparator 101_n are connected to the first capacitor C1, the second capacitor C2, The first N-1 capacitor Cn-1 and the N-th capacitor Cn reach the respective reference voltages V1_ref, V2_ref, ..., VN-1_ref and VN_ref, (S_1, S_2, ..., S_N-1) and finally outputs a control signal to the control unit 30. [

Then, the control unit 30 outputs a control signal for turning on the first output control switch Sout_1 and the second output control switch Sout_2 so that the first output control switch Sout_1 and the second output control switch Sout_2 Everyone turns on.

When both the first output control switch Sout_1 and the second output control switch Sout_2 are turned on, the input power input at the input terminal is outputted to the output terminal.

In this configuration, the input power is supplied to the first capacitor C1 and the second capacitor C2, The N-1 capacitor Cn-1, and the N-th capacitor Cn are sequentially charged and then output to the output terminal, it is possible to prevent an inrush current problem.

The first capacitor C1 and the second capacitor C2, ... The N-th capacitor Cn-1, and the N-th capacitor Cn are all charged and the input power is outputted to the output terminal, a problem arises in the comparator driven through the auxiliary power supply, so that the first output control switch Sout_1 The second output control switch Sout_2 is configured as a latch relay to maintain the ON state, so that the stable power supply can be continued.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, Of the right.

Claims (7)

A plurality of capacitors connected between an input terminal and an output terminal and sequentially charged by an input power inputted from the input terminal, a power supply unit for outputting a first control signal when each of the plurality of capacitors is charged with a reference voltage,
A first output control switch connected between the power supply unit and the output terminal,
A second output control switch connected between the input end and the output end,
When the first control signal is output, turning on the first output control switch and the second output control switch,
≪ / RTI > The method of claim 1,
And the second output control switch is a latch relay. The method of claim 1,
Further comprising an input control switch connected between the input terminal and the power supply unit,
And the second output control switch is turned off when a second control signal for turning on the input control switch is input from the outside. 4. The method of claim 3,
And when the second output control switch is turned on by the control unit, maintains the on state until the second control signal is input. 5. The method of claim 4,
Wherein the power supply unit includes a first power supply unit and a second power supply unit,
Wherein the first power supply unit includes:
A first capacitor for charging an input power input at the input terminal,
And a first comparator receiving a first reference voltage corresponding to a charging voltage of the first capacitor and a capacitance of the first capacitor and outputting a comparison result,
Wherein the second power supply unit includes:
A second capacitor for charging an input power input from the input terminal when a switch to be turned on and off is turned on in accordance with the output of the first comparator,
And a second comparator for receiving a second reference voltage corresponding to a charging voltage of the second capacitor and a capacitance of the second capacitor and outputting a comparison result,
And the second comparator outputs the first control signal when the second capacitor is charged with the second reference voltage. The method of claim 5,
Wherein the first power supply unit includes:
Further comprising a first diode and a second diode connected in series between the input control switch and the first output control switch,
Wherein the anode of the first diode is connected to the input control switch, the cathode of the second diode is connected to the first output control switch, the contact of the anode of the first diode and the anode of the second diode, 1 capacitor is connected to a first input terminal of the first comparator, the first reference voltage is input to a second input terminal of the first comparator,
Wherein the second power supply unit includes:
Further comprising a third diode and a fourth diode connected in series between the input control switch and the first output control switch,
The anode of the third diode is connected to the input control switch through a switch which is turned on and off according to the output of the first comparator, the cathode of the fourth diode is connected to the first output control switch, The second capacitor is connected to the first input terminal of the second comparator and the second input terminal of the second comparator is connected to a contact of the cathode of the first diode and the anode of the fourth diode, Supply device. The method of claim 6,
Wherein the first capacitor and the second capacitor are connected in parallel.
KR1020140144518A 2014-10-23 2014-10-23 Power supply apparatus KR101594508B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020140144518A KR101594508B1 (en) 2014-10-23 2014-10-23 Power supply apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020140144518A KR101594508B1 (en) 2014-10-23 2014-10-23 Power supply apparatus

Publications (1)

Publication Number Publication Date
KR101594508B1 true KR101594508B1 (en) 2016-02-16

Family

ID=55448150

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020140144518A KR101594508B1 (en) 2014-10-23 2014-10-23 Power supply apparatus

Country Status (1)

Country Link
KR (1) KR101594508B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200025126A (en) * 2018-08-29 2020-03-10 한국항공우주연구원 Method and device of controlling power in space electrical equipment

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050065042A (en) * 2003-12-24 2005-06-29 한국항공우주연구원 A power-supply system for preventing over-heat of satellite loaded-object
KR20110076218A (en) * 2009-12-29 2011-07-06 한국항공우주연구원 Power supply
KR20110101646A (en) * 2010-03-09 2011-09-16 네오피델리티 주식회사 Power supply circuit including voltage regulator and headphone driving circuit employing the same
KR101145754B1 (en) * 2011-06-13 2012-05-17 한국항공우주연구원 Power supply system with power supply breaking function in an emergency

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050065042A (en) * 2003-12-24 2005-06-29 한국항공우주연구원 A power-supply system for preventing over-heat of satellite loaded-object
KR20110076218A (en) * 2009-12-29 2011-07-06 한국항공우주연구원 Power supply
KR101080742B1 (en) 2009-12-29 2011-11-07 한국항공우주연구원 Power Supply
KR20110101646A (en) * 2010-03-09 2011-09-16 네오피델리티 주식회사 Power supply circuit including voltage regulator and headphone driving circuit employing the same
KR101145754B1 (en) * 2011-06-13 2012-05-17 한국항공우주연구원 Power supply system with power supply breaking function in an emergency

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200025126A (en) * 2018-08-29 2020-03-10 한국항공우주연구원 Method and device of controlling power in space electrical equipment
KR102133968B1 (en) * 2018-08-29 2020-07-14 한국항공우주연구원 Method and device of controlling power in space electrical equipment

Similar Documents

Publication Publication Date Title
CN104133515B (en) PMOS substrate selection circuit
KR20150075034A (en) Switching regulator and electronic apparatus
US10727544B2 (en) Uninterruptible power supply and battery activation operation method thereof
JP6138354B2 (en) Load drive circuit and load short circuit detection circuit
JP6410299B2 (en) Uninterruptible power system
US11054484B2 (en) Assembled battery monitoring system
US20170085170A1 (en) Bi-directional direct current to direct current converter and grid-connected inverter system
KR102365806B1 (en) Voltage detection circuit
US10284074B2 (en) Load switch and method of switching same
KR102036407B1 (en) Havesting circuit for realizing little ripple of an output voltage and method of controlling the same
CN104426127B (en) A kind of load starting circuit
KR101594508B1 (en) Power supply apparatus
US9985445B2 (en) Charging/discharging control circuit, charging/discharging control device, and battery apparatus
US8520353B2 (en) Electronic device with surge suppression circuit
US10148222B2 (en) Inverter apparatus and solar energy grid-connected power generation system
CN106356018B (en) Shift register unit, shift register and display device
KR101080742B1 (en) Power Supply
CN107959324B (en) Energy storage battery discharge switch circuit of spacecraft power system
US9350235B2 (en) Switched capacitor voltage converting device and switched capacitor voltage converting method
US20130003428A1 (en) Power supply system and electrical device with same
JP6143819B2 (en) Constant voltage circuit and power supply system
JP2013027102A (en) Protection circuit of electronic apparatus
US9929672B2 (en) Rectifier having reduced switching loss
EP3282451B1 (en) Sample and hold circuit
US20150280551A1 (en) Booster apparatus

Legal Events

Date Code Title Description
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
LAPS Lapse due to unpaid annual fee