TWI678859B - Power supply device - Google Patents

Abstract

The invention discloses a power supply device. The power supply device includes a connector, a rectifier module, a large capacitor, and a power module. The connector is used to connect to a power source. The connector includes a first pin, a second pin, The third pin, the fourth pin, the fifth pin, and the sixth pin, the connector is connected to the power supply through a delta connection or a star connection, and the first pin, the third pin, and the first pin Five pins are connected to one end of the large capacitor and the power supply module through the rectifier module, the sixth pin is connected to the other end of the large capacitor and grounded, and the rectifier module is used for The power supply is rectified, and the large capacitor is used to rectify the storage rectified power supply and make it smooth before outputting to the power supply module.

Description

Power supply unit

The present invention relates to a power supply device, and more particularly to a power supply device with a three-phase four-wire (Delta connection) and five-wire (Wye connection) common input connector.

Industrial power in different countries or regions usually uses three-phase four-wire (Delta connection) or five-wire (Wye connection). Therefore, for different connection methods, users need to design different input circuits to handle the power supply and other processing. Such as rectification and use, this will cause waste of resources and inconvenience in use.

In view of the above problems, it is necessary to provide a power supply device that allows a delta connection and a star connection to share inputs.

A power supply device includes a connector, a rectifier module, a large capacitor, and a power module. The connector is used to connect to a power source. The connector includes a first pin, a second pin, and a third lead. Pin, fourth pin, fifth pin, and sixth pin, the connector is connected to the power supply through a delta connection or a star connection, and the delta connection includes three first resistors, and the three first A resistor is connected end to end in order to form a closed triangle. The connection point between each two first resistors forms a first end, a second end, and a third end. When the connector is connected to the power supply through the triangle connection The first end, the second end, the second end, the third end, the third end, and the first end sequentially form a first pin, a second pin, a third pin, and a fourth end of the connector. Pin, fifth pin, and sixth pin; the star connection includes three second resistors, one end of the three second resistors are all connected to form a node, and the other end of the three first resistors Forming a fourth end, a fifth end, and a sixth end, respectively, when said When the connector is connected to the power supply through the star connection, the fourth terminal, the node, the fifth terminal, the node, the sixth terminal, and the node sequentially form the first pin and the second pin of the connector. , A third pin, a fourth pin, a fifth pin, and a sixth pin, and the first pin, the third pin, and the fifth pin pass through the rectifier module and one end of the large capacitor. Connected to the power module, the sixth pin is connected to the other end of the large capacitor, and grounded, the rectifier module is used to rectify the power source, and the large capacitor is used to rectify the storage After the power is smoothed, it is output to the power module.

Compared with the conventional technology, the power supply device according to the present invention arranges the corresponding relationship between the terminals of the delta connection and the star connection and the pins of the connector, so that the triangle connection and the star connection can share the connector as The input plug is shared with other circuit parts of the power supply device, thereby avoiding waste of resources.

Referring to FIG. 1, a power supply device 100 according to a first preferred embodiment of the present invention includes a connector 10, a rectifier module 20, a large capacitor C, and a power module 40 that are electrically connected in sequence. The connector 10 is used to connect to a power source. The power source is industrial power provided by a substation, and may be a three-phase four-wire (delta connection) and a three-phase five-wire (star connection). The rectifier module 20 is used for In order to rectify the power, the large capacitor C is used to smooth and rectify the stored power, and then output the power to the power module 40. The power supply device 100 is connected to a star connection terminal (for example, the first end L1 to the sixth end L6) and the connector 10 (for example, the first pin 11 to the sixth pin through a three-phase delta connection). 16) Correspondence of each pin, so that the triangle connection and the star connection can share the connector 10.

In this preferred embodiment, the connector 10 includes a first pin 11, a second pin 12, a third pin 13, a fourth pin 14, a fifth pin 15, and a sixth pin 16. The connector 10 can be connected to the power supply through a delta connection or a Wye connection.

Please refer to FIG. 2 together. The triangular connection includes three first resistors R1, and the three first resistors R1 are connected end to end in order to form a closed triangle. The connection point between every two first resistors R1 forms a first The terminal L1, the second terminal L2, and the third terminal L3. The voltage between each of the two terminals (the first terminal L1, the second terminal L2, and the third terminal L3) is the line voltage VLine, and the voltage across each first resistor R1 is the phase voltage VPhase, VLine = VPhase. Please refer to FIG. 3 together. When the connector 10 is connected to the power source through the delta connection, the first terminal L1, the second terminal L2, the second terminal L2, the third terminal L3, and the third terminal L3 and first terminal L1 form a first pin 11, a second pin 12, a third pin 13, a fourth pin 14, a fifth pin 15, and a sixth pin 16 of the connector 10 in this order.

Please refer to FIG. 4 together, the star connection includes three second resistors R2, one end of each of the three second resistors R2 is connected to form a node N, and the other ends of the three first resistors form a first resistor respectively. The four ends L4, the fifth end L5, and the sixth end L6. The voltage between each two terminals is the line voltage VLine, and the voltage across each resistor R is the phase voltage VPhase, and VLine = VPhase. Please refer to FIG. 5 together. When the connector 10 is connected to the power supply through the star connection, the fourth terminal L4, node N, fifth terminal L5, node N, sixth terminal L6, node N sequentially forms a first pin 11, a second pin 12, a third pin 13, a fourth pin 14, a fifth pin 15, and a sixth pin 16 of the connector 10.

Please refer to FIG. 1 again, the first pin 11, the third pin 13, and the fifth pin 15 are connected to one end of the large capacitor C and the power module 40 through the rectifier module 20, so The sixth pin 16 is connected to the other end of the large capacitor C and grounded. The rectifier module 20 is used to rectify the power source, and the large capacitor C is used to store the rectified power source. After making it smooth, it is output to the power module 40. Specifically, please refer to FIGS. 6A, 6B, 7A, and 7B. FIGS. 6A and 6B are waveform diagrams of the line voltage VLine and the voltage VBulk when the input is in a delta connection, where VL1-2, VL2-3, VL3- 1 represents a line voltage between the first terminal L1 and the second terminal L2, between the second terminal L2 and the third terminal L3, and between the third terminal L3 and the first terminal L1. FIG. 7A and FIG. 7B are waveform diagrams of the phase voltage Vphase and the voltage VBulk when the input is a star connection, where VL4-N, VL5-N, and VL6-N represent the fourth terminal L4 and the node N, and the fifth The phase voltage between terminal L5 and node N and between the sixth terminal L6 and node N, VBulk represents the voltage across the large capacitor C, and the peak value of the voltage VBulk across the large capacitor C is equal to the phase voltage VPhase Peak. As can be seen from FIG. 6A, FIG. 6B, FIG. 7A and FIG. 7B, the large capacitor C can reduce the continuous wave voltage to smooth the rectified power supply.

In this preferred embodiment, the rectifier module 20 includes three diodes D1, D3, and D5, which are respectively disposed on the first pin 11, the third pin 13, and the fifth pin 15 and all Said between the large capacitors C. It can be understood that the diodes D1, D3, and D5 can be replaced with rectifiers, and the rectifiers rectify the power source by receiving additional control signals. Please refer to FIG. 8 and FIG. 9. FIG. 8 and FIG. 9 are partial equivalent circuit diagrams of the power supply device 100 when the input is a delta connection and a star connection. As can be seen from FIG. 8 and FIG. The type connection may share the connector 10 as an input plug.

It can be understood that the power supply device 100 further includes an electromagnetic interference (Electro-Magnetic Interference, EMI) module 50. One end of the EMI module 50 is connected to the first pin 11, the third pin 13, and the fifth lead. Pin 15 is connected, and the other end is connected to the rectifier module 20. The EMI module 50 is used to filter electromagnetic interference generated by the power module 40.

Referring to FIG. 10, the structure and working principle of the power supply device 200 according to the second preferred embodiment of the present invention are substantially the same as those of the power supply device 100, except that the power supply device 200 further includes a first switch S1 and a first switch S1. A second switch S2 and a detection module 60, one end of the first switch S1 is connected to the second pin 12, and the other end is connected to the other end of the large capacitor C, and is grounded; the second switch One end of S2 is connected to the rectifier module 20, and the other end is connected to the other end of the large capacitor C, and is grounded; the detection module 60 is connected to the second pin 12, the fourth pin 14, The sixth pin 16, the first switch S1, and the second switch S2 are connected, and the detection module 60 detects between the second pin 12 and the fourth pin 14, and between the fourth pin 14 and The voltage difference between the sixth pin 16 and the first switch S1 and the second switch S2 are controlled according to a detection result.

In the preferred embodiment, the rectifier module 20 includes six diodes D1, D2, D3, D4, D5, and D6, and three diodes D1, D3, and D5 are respectively disposed at the first Between the pin 11, the third pin 13, and the fifth pin 15 and the large capacitor C, the other three diodes D2, D4, and D6 are respectively disposed on the first pin 11 and the third pin 13 and the fifth pin 15 and the second switch S2.

In this preferred embodiment, when the connector 10 is connected to the power source through the delta connection, the first switch S1 is turned off and the second switch S2 is turned on. At this time, the power supply device 100 The equivalent circuit and the waveforms of the line voltage VLine and the voltage VBulk are shown in FIGS. 11, 12A, and 12B, where VL1-2, VL2-3, and VL3-1 represent between the first terminal L1 and the second terminal L2, Line voltage between the second terminal L2 and the third terminal L3 and between the third terminal L3 and the first terminal L1. When the connector 10 is connected to the power source through the star connection, the first switch S1 is turned on and the second switch S2 is turned off. At this time, the equivalent circuit and the line voltage of the power supply device 100 The waveforms of Vphase and voltage VBulk are shown in Figures 13, 14A, and 14B, respectively, where VL4-N, VL5-N, and VL6-N represent the fourth terminal L4 and node N, and the fifth terminal L5 and node For the phase voltage between N and between the sixth terminal L6 and the node N, VBulk represents the voltage across the large capacitor C, and the peak value of the voltage VBulk across the large capacitor C is equal to the phase voltage VPhase peak. As can be seen from FIG. 11, FIG. 12A, FIG. 12B, FIG. 13, FIG. 14A, and FIG. 14B, the triangular connection and the star connection may share the connector 10 as an input plug.

Referring to FIG. 15, the structure and working principle of the power supply device 300 according to the third preferred embodiment of the present invention are substantially the same as those of the power supply device 100 except that the power supply device 200 further includes a first switch S1 and a first switch S1. The second switch S2, the third switch S3, the fourth switch S4, and the detection module 60. One end of the first switch S1 is connected to the second pin 12, and the other end is connected to the other end of the large capacitor C. Connected, and grounded; the second switch S2, the third switch S3, and the fourth switch S4 are respectively connected to the first pin 11, the third pin 13, and the fifth pin 15 through the rectifier module 20 , The other end is connected to the other end of the large capacitor C, and is grounded; the detection module 60 is connected to the second pin 12, the fourth pin 14, the sixth pin 16, the first switch S1, The second switch S2, the third switch S3, and the fourth switch S4 are connected. The detection module 60 detects between the second pin 12 and the fourth pin 14, and between the fourth pin 14 and the first pin. Voltage difference between six pins 16 and controls the first switch S1, the second switch S2, the third switch S3 and the fourth switch according to the detection result Switch S4.

In the preferred embodiment, the rectifier module 20 includes six diodes D1, D2, D3, D4, D5, and D6, and three diodes D1, D3, and D5 are respectively disposed at the first Between the pin 11, the third pin 13, and the fifth pin 15 and the large capacitor C, the other three diodes D2, D4, and D6 are respectively disposed on the first pin 11 and the second Between switches S2, between the third pin 13 and the third switch S3, and between the fifth pin 15 and the fourth switch S4.

In the preferred embodiment, when the connector 10 is connected to the power source through the delta connection, the first switch S1 is turned off, the second switch S2, the third switch S3, and the fourth switch S4 are turned off. At this time, the equivalent circuit of the power supply device 100 and the waveforms of the line voltage VLine and the voltage VBulk are shown in FIG. 11, FIG. 12A, and FIG. 12B, respectively. When the connector 10 is connected to a power source through the star connection and the input is high, the first switch S1 is turned on, the second switch S2, the third switch S3, and the fourth switch S4 are turned off. At this time, the equivalent circuit of the power supply device 100 and the waveforms of the line voltage VPhase and the voltage VBulk are shown in FIGS. 13, 14A, and 14B, respectively. When the connector 10 is connected to a power source through the star connection and the input is at a low level, the first switch S1 is turned off, the second switch S2, the third switch S3, and the fourth switch S4 are turned on, so The equivalent circuit of the power supply device 100 and the waveforms of the line voltage VLine and the voltage VBulk are shown in FIG. 16, FIG. 17A, and FIG. 17B, respectively, where VL1-2, VL2-3, and VL3-1 represent the first terminals L1 and Line voltage between the second terminal L2, between the second terminal L2 and the third terminal L3, and between the third terminal L3 and the first terminal L1, VBulk represents the voltage across the large capacitor C, and the large capacitor The peak value of the voltage VBulk across C is equal to the line voltage VLine equal to the peak value of the phase voltage VPhase. As can be seen from FIG. 11, FIG. 12A, FIG. 12B, FIG. 16, FIG. 17A, and FIG. 17B, the triangular connection and the star connection can share the connector 10 as an input plug. In addition, in the present preferred embodiment, when the voltage of the large capacitor C is increased, the capacitor continuous current can be reduced to improve the capacitor life.

It can be understood that the power module 40 is a computer power supply unit or a DC-DC converter.

In summary, the power supply devices 100, 200, and 300 according to the present invention correspond to the pins of the connector 10 by arranging the delta connection and the star connection, so that the triangle connection and the star connection can share the connector 10, and share other circuit parts of the power supply device, which can avoid waste of resources. In addition, the power supply devices 100 and 200 use fewer switching elements, which can save space and reduce production costs.

In summary, this creation complies with the elements of an invention patent, and a patent application is filed in accordance with the law. However, the above is only a preferred embodiment of this creation, and the scope of this creation is not limited to the above embodiments. For example, those who are familiar with the skills of this case make equivalent modifications or changes based on the spirit of this creation. It should be covered by the following patent applications.

100, 200, 300‧‧‧ power supply units

10‧‧‧ Connector

11‧‧‧ the first pin

12‧‧‧ second pin

13‧‧‧ third pin

14‧‧‧ fourth pin

15‧‧‧ fifth pin

16‧‧‧ sixth pin

L1‧‧‧ the first end

L2‧‧‧ second end

L3‧‧‧ third end

L4‧‧‧ fourth end

L5‧‧‧ fifth end

L6‧‧‧ Sixth end

N‧‧‧node

R1‧‧‧first resistor

R2‧‧‧Second resistor

20‧‧‧ Rectifier Module

D1, D2, D3, D4, D5, D6‧‧‧ diodes

C‧‧‧Large capacitor

40‧‧‧Power Module

S1‧‧‧First switch

S2‧‧‧Second switch

S3‧‧‧Third switch

S4‧‧‧Fourth switch

50‧‧‧EMI Module

60‧‧‧ Detection Module

FIG. 1 is a circuit diagram of a first preferred embodiment of a power supply device according to the present invention.
FIG. 2 is a schematic diagram of a conventional triangular connection.
FIG. 3 is a schematic diagram of a correspondence relationship between a triangle-connected terminal and a pin of a connector according to the present invention.
FIG. 4 is a schematic diagram of a conventional star connection.
FIG. 5 is a schematic diagram of a correspondence relationship between a star connection terminal and a pin of the connector according to the present invention.
6A and 6B are waveform diagrams of the line voltage and the large capacitor voltage of the power supply device shown in FIG. 1 when the input is a delta connection.
7A and 7B are waveform diagrams of a phase voltage and a large capacitor voltage of the power supply device shown in FIG. 1 when the input is a star connection.
FIG. 8 is an equivalent circuit diagram of the power supply device shown in FIG. 1 when the input is a delta connection.
FIG. 9 is an equivalent circuit diagram of the power supply device shown in FIG. 1 when the input is a star connection.
FIG. 10 is a circuit diagram of a second preferred embodiment of the power supply device of the present invention.
FIG. 11 is an equivalent circuit diagram of the power supply device shown in FIG. 10 when the input is a delta connection.
12A and 12B are waveform diagrams of a line voltage and a large capacitor voltage of the power supply device shown in FIG. 10 when the input is a delta connection.
FIG. 13 is an equivalent circuit diagram of the power supply device shown in FIG. 10 when the input is a star connection.
14A and 14B are waveform diagrams of a phase voltage and a large capacitor voltage of the power supply device shown in FIG. 10 when the input is a star connection.
FIG. 15 is a circuit diagram of a third preferred embodiment of the power supply device of the present invention.
FIG. 16 is an equivalent circuit diagram of the power supply device shown in FIG. 15 when the input is a star connection and the input is high.
17A and 17B are waveform diagrams of a phase voltage and a large capacitor voltage of the power supply device shown in FIG. 15 when the input is a star connection and the input is a low level.

Claims (10)

A power supply device is improved in that the power supply device includes a connector, a rectifier module, a large capacitor, and a power supply module. The connector is used to connect to a power source. The connector includes a first pin and a second pin. , A third pin, a fourth pin, a fifth pin, and a sixth pin, the connector is connected to the power supply through a delta connection or a star connection, and the delta connection includes three first resistors, so The three first resistors are connected end to end in order to form a closed triangle. The connection point between each two first resistors forms a first end, a second end, and a third end. When the connector is connected through the triangle connection, During the power supply, the first terminal, the second terminal, the second terminal, the third terminal, the third terminal, and the first terminal sequentially form a first pin, a second pin, and a third pin of the connector. Pin, fourth pin, fifth pin, and sixth pin; the star connection includes three second resistors, one end of each of the three second resistors is connected to form a node, and the three first The other end of the resistor forms a fourth end, a fifth end, and a first end, respectively. Terminal, when the connector is connected to the power supply through the star connection, the fourth terminal, the node, the fifth terminal, the node, the sixth terminal, and the node form the first pin of the connector in order. , A second pin, a third pin, a fourth pin, a fifth pin, and a sixth pin, and the first pin, the third pin, and the fifth pin are connected to the One end of the large capacitor is connected to the power supply module, the sixth pin is connected to the other end of the large capacitor and grounded, and the rectification module is used to rectify the power supply, and the large capacitor It is used to rectify the storage power and make it smooth before outputting it to the power module. The power supply device according to item 1 of the patent application scope, wherein the power supply device further includes a first switch, a second switch, and a detection module, one end of the first switch is connected to the second pin, and the other One end is connected to the other end of the large capacitor and grounded; one end of the second switch is connected to the rectifier module, and the other end is connected to the other end of the large capacitor and grounded; the detection module And connected to the second pin, the fourth pin, the sixth pin, the first switch, and the second switch, and the detection module detects between the second pin and the fourth pin and between The voltage difference between the fourth pin and the sixth pin is described, and the first switch and the second switch are controlled according to a detection result. The power supply device according to item 2 of the scope of patent application, wherein when the connector is connected to the power supply through the delta connection, the first switch is turned off, the second switch is turned on, and when the connector When the power is connected through the star connection, the first switch is turned on and the second switch is turned off. The power supply device according to item 1 of the scope of patent application, wherein the power management further includes a first switch, a second switch, a third switch, a fourth switch, and a detection module. The second pin is connected, the other end is connected to the other end of the large capacitor, and is grounded; the second switch, the third switch, and the fourth switch are connected to the first pin respectively through the rectifier module. , The third pin and the fifth pin, the other end of which is connected to the other end of the large capacitor and is grounded; the detection module is connected to the second pin, the fourth pin, the sixth pin, The first switch, the second switch, the third switch, and the fourth switch are connected, and the detection module detects between the second pin and the fourth pin and between the fourth pin and the sixth pin. And a voltage difference between the two switches, and the first switch, the second switch, the third switch, and the fourth switch are controlled according to a detection result. The power supply device according to item 4 of the scope of patent application, wherein when the connector is connected to the power supply through the delta connection, the first switch is turned off, and the second switch, the third switch, and the fourth switch are turned off. The switch is turned on. When the connector is connected to the power source through the star connection, the first switch is turned on, and the second switch, the third switch, and the fourth switch are turned off. The power supply device according to item 1 of the scope of patent application, wherein the power supply device further includes an EMI module, and one end of the EMI module is connected to the first pin, the third pin, and the fifth pin, The other end is connected to the rectifier module, and the EMI module is used to filter electromagnetic interference generated by the power module. The power supply device according to item 1 of the scope of patent application, wherein the power supply module is a computer power supply unit or a DC-DC converter. The power supply device according to item 1 of the scope of patent application, wherein the rectifier module includes three diodes, which are respectively disposed on the first pin, the third pin, the fifth pin, and the large capacitor. between. The power supply device according to item 2 of the scope of patent application, wherein the rectifier module includes six diodes, and three diodes are respectively disposed on the first pin, the third pin, and the fifth pin. Between the pin and the large capacitor, the other three diodes are respectively disposed between the first pin, the third pin, and the fifth pin and the second switch. The power supply device according to item 4 of the scope of patent application, wherein the rectifier module includes six diodes, and three diodes are respectively disposed on the first pin, the third pin, and the fifth pin. Between the pin and the large capacitor, three other diodes are respectively disposed between the first pin and the second switch, between the third pin and the third switch, and the Between a fifth pin and the fourth switch.