TW201433050A - Power supply capable of extending maintenance time - Google Patents

Abstract

A power supply capable of extending maintenance time mainly relies on the parallel connection of a continuous power supply system and a main power supply system from a power factor corrector. The continuous power supply system comprises an isolation transformer connecting the power factor corrector to receive a first power allobat to become a third power, an energy storage receiving the third power and stores continuous power, and a power comparing unit between the output voltage and the energy storage to obtain a second power and continuous power. The power comparing unit compares the second power and the continuous power generated from the power factor corrector phase modulation, and output continuous power when the second power is smaller than the continuous power in order to extend the power modulation element to continue operation.

Description

Extended power supply for maintenance time

The present invention relates to a power supply, and more particularly to a power supply that maintains a power supply by continuing to operate for a sustained period of time.

According to the current AC/DC power supply, in order to respond to external power interruption, it can continue to supply power for a period of time, so that the load can complete the necessary storage and control actions and can be safely shut down, and the delayed working time is what the industry calls. Hold up time. However, as the power density of the power supply is higher and higher, the efficiency of the power supply and the avoidance of the power supply abnormality are relatively increased, and the provision of the above-mentioned maintenance time is also required to increase the length of time during which the power supply can be continued.

Furthermore, a general power supply usually includes a rectifying unit, a power factor correcting unit, a voltage stabilizing component, and a power modulation unit, which initiates an initial, and the rectifying unit converts an external power into a direct current power, and corrects the power factor. The unit performs phase modulation on the DC power, and the power is output by the correction unit to charge the voltage stabilizing component, and the power supply device needs to wait until the voltage regulator component operates in a steady state before being driven normally. That is to say, it is necessary to wait until the voltage stabilizing element is charged to complete the power modulation output. The above-mentioned maintenance time means that the power supply unit cannot normally obtain the external power, and the power factor correction unit stops switching the power, and the voltage stabilizing element performs the discharge time. Therefore, there are generally two ways to extend the maintenance time. One is to increase the energy storage capacity of the voltage regulator component, and the other is to add an auxiliary energy storage component. However, the increase in energy storage capacity, that is, the storage The charging time of the energy component is prolonged. As a result, the power-on time of the power supply is prolonged. If the startup current is increased in order to shorten the startup time, the component of the power supply cannot meet the startup current. . The implementation method of adding an auxiliary energy storage component is disclosed in the Patent No. I364651 of the Republic of China. The case is to store and maintain electric power by an auxiliary energy storage component to provide the maintenance power to extend the maintenance time when the external power is abnormal. However, the auxiliary energy storage component is directly connected in parallel with the energy storage component, which invisibly increases the equivalent load of the power supply, and is not conducive to the overall power supply of the power supply.

The main object of the present invention is to overcome the problem of slow start-up and increased load on the main power supply system due to the conventional power supply architecture and implementation.

To achieve the above object, the present invention provides a power supply for extending the maintenance time, comprising a main power supply system and a maintenance power supply system. The main power supply system includes a rectifying unit that receives an external power and rectifies and outputs a first electric power, and a power factor correcting unit that receives the first electric power to phase-modulate the first electric power to generate a second electric power, accepts the The second power is used as a voltage stabilizing component for the energy storage voltage regulator, and a power modulation unit that connects the voltage stabilizing component and converts the second power into a working power output. Further, the power factor correction unit has an input terminal connected to the rectifying unit and an output terminal connected to the voltage stabilizing element. The maintenance power supply system is connected in parallel with the power factor correction unit, and includes an isolation transformer component connected to the input terminal to transform the first power into a third power, and receiving the third power and storing the storage having a maintenance power An energy component, and a power comparison unit disposed between the output terminal and the energy storage component to obtain the second power and the maintenance power, the power comparison unit having a storage power when the second power is greater than the maintenance power a first state in which the component continues to be charged, the second state being equal to the second state in which the energy storage component stops charging, and the second power being less than the sustaining power causes the energy storage component to output the sustaining power to The power modulation unit continuously maintains the working power for a third state of time.

In one embodiment, the maintenance power supply system includes a charge control unit that controls the conduction state of the isolation transformer element. Further, the charging control unit includes a power switching element and a driving control unit that controls an on state of the power switching element.

In one embodiment, the sustain power supply system includes a current limiting resistor that connects the isolation transformer element to limit the magnitude of the current.

In one embodiment, the maintenance power supply system includes a unidirectional conduction element connecting the isolation transformer element and the energy storage element to limit the direction of current flow only to the energy storage element. Further, the unidirectional conduction element is a diode.

In one embodiment, the energy storage component is selected from one of the group consisting of a battery component or a capacitor.

In an embodiment, the power comparison unit is a diode.

The power supply for extending the maintenance time disclosed by the present invention has the following features as compared with the conventional embodiment:

First, avoid increasing the load on the main power supply system. The energy storage component of the present invention is not connected in parallel with the voltage stabilizing component, and the third power stored by the magnetic coupling of the isolation transformer component is charged to the energy storage component, and the second power is directly used by the utility device. The charging embodiment can specifically avoid increasing the equivalent load of the main power supply system when it is actuated.

Second, the ability to store energy with a smaller power current. The energy storage component of the present invention can slowly charge the third power of a small current value, thereby not affecting the implementation of the overall power supply, and does not increase the load of the main power supply system.

1. . . Main power supply system

11. . . Rectifier unit

12. . . Power factor correction unit

121. . . Input

122. . . Output

123. . . Pulse width control unit

13. . . Voltage regulator component

14. . . Power modulation unit

15. . . Power integrated backplane

2. . . Maintain power supply system

twenty one. . . Isolation transformer element

211. . . Primary coil

212. . . Secondary coil

twenty two. . . Energy storage component

twenty three. . . Power comparison unit

twenty four. . . Current limiting resistor

25. . . Charging control unit

251. . . Power switching element

252. . . Drive control unit

26. . . One-way conduction element

3. . . External power source

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a block diagram showing the circuit composition of an embodiment of a power supply for extending the sustain time of the present invention.

FIG. 2 is a schematic diagram showing a specific circuit implementation of an embodiment of a power supply for extending the duration of the present invention.

The detailed description and technical contents of the present invention will now be described as follows:

Referring to FIG. 1 and FIG. 2, the power supply for extending the maintenance time of the present invention can maintain the power continuation when the external power is unable to be obtained due to short-term power failure or unexpected power supply interruption in the process of obtaining an external power. The power supply operates for a hold time (known as the Hold up time in the industry), and avoids the problem of data loss or component damage due to abnormal power supply of an information processing device connected to the power supply. The power supply device of the present invention comprises a main power supply system 1 and a maintenance power supply system 2, the main power supply system 1 includes a rectification unit 11, a power factor correction unit 12 connected to the rectification unit 11, and a voltage stabilization component 13. And a power modulation unit 14 connected to the voltage stabilizing element 13. The rectifying unit 11 is connected to an external power source 3 to receive the external power and rectified and outputted a first electric power, and the power factor correcting unit 12 receives the first electric power and performs phase adjustment on the current and voltage of the first electric power, so that the rectifying unit 12 The power factor of the first power is in accordance with the implementation, and the output is converted to a second power. More specifically, the power factor correcting unit 12 has an input terminal 121 connected to the rectifying unit 11 and an output terminal 122 connected to the voltage stabilizing element 13. The voltage stabilizing element 13 receives the second power from the output end 122 of the power factor correcting unit 12 for energy storage, and forms a voltage regulation at a steady state, and the power modulation unit 14 is connected to the voltage stabilizing element 13 The second power performs power conversion to output a working power. In addition, when the power supply device of the present invention is implemented in an N+M backup power system, the main power supply system 1 is connected to a power integration backplane 15 after the power modulation unit 14 to integrate the power integration backplane 15 The working power is output to the information processing device, where N represents the number of power supplies required for the backup power system to drive the sum of the power power loads of the information processing device, and M indicates that the power supply is allowed to be damaged. quantity. Further, the power factor correcting unit 12 has a pulse width control unit 123 that controls the operating state of the power factor correcting unit 12.

On the other hand, the maintenance power supply system 2 is connected in parallel to the power factor correction unit 12. Specifically, the maintenance power supply system 2 includes an isolation transformer element 21 connected to the input terminal 121, and the isolation transformer element 21 is connected. The energy storage component 22, and a power comparison unit 23 between the output terminal 122 and the energy storage component 21, specifically, the isolation transformer component 21 has a primary coil 211 and a magnetic circuit with the primary coil 211 The coupled secondary coil 212 is connected to the input end 121 of the work factor correction unit 12 by the primary coil 211, and is connected to the energy storage element 22 by the secondary coil 212. After the isolation transformer element 21 receives the first power, the primary coil 211 and the secondary coil 212 are coupled to convert and output a third power. Further, the number of turns of the primary coil 211 may be less than the number of turns of the secondary coil 212, that is, the power level of the third power after the transformer is transformed by the isolating transformer 21 The power level of the first power. The energy storage component 22 receives the third power from the secondary coil 212 and stores energy to maintain power. Further, the energy storage component 22 can be free from one of a battery component or a group of capacitors. . In addition, the isolation transformer element 21 is connected to a current limiting resistor 24. When the first power is output to the input terminal 121, the current of the first power is received by the resistance value of the current limiting resistor 24 and the power factor correcting unit 12 The voltage stabilizing element 13 and the equivalent resistance value of the power modulation unit 14 are shunted, and the current limiting resistor 24 causes the current received by the power supply system 2 to be smaller than the current received by the power factor correcting unit 12, That is, the maintenance power supply system 2 of the present invention charges at a lower power, thereby reducing the workload of the main power supply system 1, and further, the current received by the power factor correction unit 12 is the maintenance power supply system. 2 times the current received, preferably 10 times. In addition, the maintenance power supply system 2 further includes a charging control unit 25 connected to the isolation transformer element 21, and the charging control unit 25 controls the conduction state of the isolation transformer element 21. The charging control unit 25 specifically includes a The power switching element 251 and a driving control unit 252 that controls the conduction state of the power switching element 251, and the power switching unit 251 can be selected from a transistor (BJT), a metal oxide half field effect transistor (MOSFET), and an insulated gate bipolar. One of the groups of crystals (IGBTs), the drive control unit 252 can determine the conduction of the power switch unit 251 through feedback control or timing control. The drive control unit 252 has many implementations, and the present invention The implementation of the drive control unit 252 is not limited. The drive control unit 252 drives the power switch unit 251 to conduct, and the isolation transformer element 21 performs power conversion and outputs the third power to charge the energy storage element 22. In addition, the maintenance power supply system 2 includes a unidirectional conduction element 26 connecting the isolation transformer element 21 and the energy storage element 22, and the unidirectional conduction element 26 can further be a diode to limit the maintenance. The current of the electric power cannot flow to the isolated transformer element 21, that is, the current of the unidirectional element 26 restricting the third electric power can only be conducted to the energy storage element 22.

As described above, the power comparison unit 23 of the present invention has the following implementation state according to the power level of the second power and the power level of the maintenance power when the power supply unit of the present invention is implemented. The power comparison unit 23 has a first state in which the second power is greater than the maintenance power to continuously charge the energy storage component 22, and the second power is equal to the second state in which the power storage device 22 stops charging. And a third state in which the second power is less than the maintenance power to cause the energy storage component 22 to output the maintenance power to the power modulation unit 14 via the output terminal 122. More specifically, when the main power supply system 1 accepts the initial start of the conversion of the external power, the energy storage component 22 does not store power at the moment, that is, the power supply starts, and the energy storage component 22 does not have the maintenance power. . When the external power is outputted by the rectifying unit to output the first electric power, the first electric power is output to the power factor correcting unit 12 for phase modulation, and is output to the isolated transforming element 21. When the isolation transformer element 21 receives the first power, the isolation transformer element 21 converts the first power to the first power to the energy storage element 22 by the primary coil 211 and the secondary coil 212. The energy storage component 22 receives the third power for charging, and the stored energy is still less than the second power, and the power comparison unit 23 is still in the first state. After the energy storage element 22 is charged for a period of time, the power level of the power is increased to be equal to the second power, and the power comparison unit 23 is in the second state, so that the power is suspended but the power is maintained. Level. If the main power supply system 1 cannot obtain the external power normally, the power level of the second power is affected and gradually decreases. When the power is reduced to less than the maintenance power, the power comparison unit 23 enters the third state. The energy storage component 22 outputs the maintenance power, and the power conversion unit continues to operate the maintenance time for the user to archive or shut down the information processing device during the maintenance time. The length of the maintenance time depends on how much energy the energy storage element 22 can store.

In summary, the present invention extends the time-maintaining power supply by mainly maintaining a power supply system in parallel with a power factor correction unit in a main power supply system. The maintenance power supply system includes an isolation transformer component connected to the power factor correction unit for receiving a first power to be converted into a third power, and receiving the third power and storing an energy storage component having a maintenance power, and a Connected to the power comparison unit between the power factor correction unit and the energy storage element, the power comparison unit compares a second power generated by the phase modulation of the power factor correction unit with the maintenance power, and the second power is less than the maintenance The power is outputted during the power supply to continue the power modulation unit to continue to operate for a maintenance time. The above circuit architecture is used to overcome the problem that the conventional power supply requires a slow start-up due to the increase of the maintenance time and an increase in the load of the main power supply system.

The present invention has been described in detail above, but the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Variations and modifications are still within the scope of the patents of the present invention.

1. . . Main power supply system

11. . . Rectifier unit

12. . . Power factor correction unit

121. . . Input

122. . . Output

13. . . Voltage regulator component

14. . . Power modulation unit

15. . . Power integrated backplane

2. . . Maintain power supply system

3. . . External power source

Claims (8)

A power supply that extends the hold time, including:
A main power supply system includes a rectifying unit that receives an external power source and rectifies and outputs a first electric power, and a power factor correcting unit that receives the first electric power to phase-modulate the first electric power to generate a second electric power, a voltage stabilizing component receiving the second power as a storage voltage regulator, and a power modulation unit connected to the voltage stabilizing component and converting the second power into a working power output, the power factor correcting unit having a connection to the rectifying unit An input terminal and an output terminal connected to the voltage stabilizing component; and a maintenance power supply system, the power factor correcting unit is connected in parallel, and includes an isolated transformer component connected to the input terminal to transform the first power into a third power Receiving the third power and storing an energy storage component having a maintenance power, and a power comparison unit disposed between the output terminal and the energy storage component to obtain the second power and the maintenance power, the power comparison The unit has a first state when the second power is greater than the maintenance power to cause the energy storage element to continuously charge, and when the second power is equal to the maintenance power, the energy storage element The second state of charge is stopped, and power is less than a second when the power is maintained so that the energy storage element to maintain the output power to the power modulation unit to continuously convert a third state of the operating power to maintain a time. A power supply for extending a maintenance time as described in claim 1, wherein the maintenance power supply system includes a charge control unit that controls an on state of the isolation transformer element. A power supply device for extending a maintenance time as described in claim 2, wherein the charge control unit includes a power switching element and a drive control unit that controls an on state of the power switching element. The power supply for extending the maintenance time as described in claim 1, wherein the maintenance power supply system includes a current limiting resistor that connects the isolation transformer element to limit the current. The power supply for extending the maintenance time as described in claim 1, wherein the maintenance power supply system includes a connection between the isolation transformer element and the energy storage element to limit current direction to be electrically connected only to the energy storage element. One-way conduction component. The power supply for extending the maintenance time as described in claim 5, wherein the one-way conducting component is a diode. The power supply for extending the maintenance time as described in claim 1, wherein the energy storage element is selected from one of the group consisting of a battery element or a capacitor. A power supply device for extending a maintenance time as described in claim 1, wherein the power comparison unit is a diode.