CN215120572U - Bypass power unit power supply circuit - Google Patents
Bypass power unit power supply circuit Download PDFInfo
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- CN215120572U CN215120572U CN202121339428.0U CN202121339428U CN215120572U CN 215120572 U CN215120572 U CN 215120572U CN 202121339428 U CN202121339428 U CN 202121339428U CN 215120572 U CN215120572 U CN 215120572U
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- 239000003990 capacitor Substances 0.000 claims description 55
- 238000004804 winding Methods 0.000 claims description 15
- 238000010586 diagram Methods 0.000 description 6
- 238000012986 modification Methods 0.000 description 2
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000003985 ceramic capacitor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model relates to a bypass power unit power supply circuit, including DC/DC auxiliary source module, unit control circuit, unit bypass control circuit and DC/DC drive power supply circuit, a DC/DC power is connected to DC/DC auxiliary source module's input, and first group's output is connected unit control circuit, second group's output are parallelly connected simultaneously unit bypass control circuit with DC/DC drive power supply circuit. Implement the utility model discloses a bypass power unit power supply circuit is the unit control circuit through a set of output that adopts DC/DC auxiliary source module, and another group's output is parallelly connected simultaneously unit bypass control circuit with DC/DC drive power supply circuit is for its power supply, can satisfy bypass and non-bypass circuit power supply demand simultaneously and guarantee the validity of bypass function. And the common power supply can reduce the size of the power supply and reduce power devices.
Description
Technical Field
The utility model relates to a power supply circuit field, more specifically say, relate to a bypass power unit power supply circuit.
Background
The cascaded medium-high voltage frequency converter is used for serially connecting the outputs of a plurality of independent low-voltage power units to realize medium-high voltage output. And the output voltage is unbalanced due to the fact that a certain unit is in fault inevitably occurs in the series connection of a plurality of power units, so that the power unit needs to be bypassed when the certain power unit is in fault, and the three-phase output balance of the system is ensured. The traditional bypass power unit power circuit generally comprises two sets of DC/DC power supplies, one set of DC/DC power supply is used for supplying power to circuits except the bypass, and the other set of DC/DC power supply is used for supplying power to the bypass circuit, so that the cost is high, the size is large, and the reliability does not necessarily meet the requirement.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect of prior art, provide one kind can satisfy bypass and non-bypass circuit power supply demand simultaneously and guarantee the general type bypass power unit power supply circuit of the validity of bypass function.
The utility model provides a technical scheme that its technical problem adopted is: a bypass power unit power supply circuit is constructed and comprises a DC/DC auxiliary source module, a unit control circuit, a unit bypass control circuit and a DC/DC driving power supply circuit, wherein the input end of the DC/DC auxiliary source module is connected with a DC/DC power supply, a first group of output ends are connected with the unit control circuit, and a second group of output ends are simultaneously connected with the unit bypass control circuit and the DC/DC driving power supply circuit in parallel.
In the bypass power unit power circuit of the present invention, the DC/DC auxiliary source module includes an auxiliary source transformer, a first auxiliary output module and a second auxiliary output module, the auxiliary source transformer comprises a primary side input coil, a first secondary side output coil and a second secondary side output coil, the first input end of the primary side input coil is connected with the anode of the DC/DC power supply, the second input end of the primary side input coil is connected with the cathode of the DC/DC power supply, the output end of the first secondary output coil is connected with the input end of the first secondary output module, the output end of the first secondary output module is connected with the unit control circuit, the output end of the second secondary output coil is connected with the input end of the second secondary output module, and the output end of the second secondary side output module is simultaneously connected with the unit bypass control circuit and the DC/DC driving power supply circuit.
In the bypass power unit power supply circuit of the present invention, the first secondary output module includes a first diode and a first output capacitor, an anode of the first diode is connected to a first output end and a cathode of the first secondary output coil, a first end of the first output capacitor is connected to a second end of the first secondary output coil, and the unit control circuit is connected to a first end and a second end of the first output capacitor.
Bypass power unit power supply circuit in, the vice limit output module of second includes second diode and second output electric capacity, the positive pole of second diode is connected the first output of the vice limit output coil of second, negative pole are connected the first end of second output electric capacity, the second end of second output electric capacity is connected the second output of the vice limit output coil of second, unit bypass control circuit with DC/DC drive power supply circuit connects the first end and the second end of second output electric capacity.
In the bypass power unit power supply circuit of the present invention, the DC/DC driving power supply circuit includes a driving transformer and a driving secondary output module, the driving transformer includes a driving primary input coil and a driving secondary output coil; the input end of the driving primary side input coil is connected with the first end and the second end of the second output capacitor, and the output end of the driving secondary side output coil is connected with the driving secondary side output module.
In the bypass power unit power circuit of the present invention, the auxiliary transformer further includes a third auxiliary output coil and a fourth auxiliary output coil; the DC/DC auxiliary source module further comprises a third secondary side output module and a fourth secondary side output module; the output end of the third secondary output coil is connected with the input end of the third secondary output module, the output end of the third secondary output module is connected with the unit control circuit, the output end of the fourth secondary output coil is connected with the input end of the fourth secondary output module, and the output end of the fourth secondary output module is also connected with the unit control circuit.
Bypass power unit power supply circuit in, third secondary output module includes third diode, third output capacitance, fourth output capacitance and first power management chip, the negative pole of third diode is connected the first end, the positive pole of third secondary output coil are connected the first end of third output capacitance with the first end of first power management chip, the second end of first power management chip is connected the first end of fourth output capacitance, the second end of fourth output capacitance the second end of third secondary output coil and the third end ground connection of first power management chip, the second end of first power management chip is for connecting the negative pole end of unit control circuit.
In the bypass power unit power circuit, the fourth secondary output module includes a fourth diode, a fifth output capacitor, a sixth output capacitor and a second power management chip, an anode of the fourth diode is connected to a first end and a cathode of the fourth secondary output coil, the first end of the fifth output capacitor is connected to the first end of the second power management chip, a second end of the second power management chip is connected to the first end of the sixth output capacitor, the second end of the fifth output capacitor is connected to the second end of the sixth output capacitor, the second end of the fourth secondary output coil is connected to the third end of the second power management chip, and the second end of the second power management chip is connected to the positive end of the unit control circuit.
Implement the utility model discloses a bypass power unit power supply circuit is the unit control circuit through a set of output that adopts DC/DC auxiliary source module, and another group's output is parallelly connected simultaneously unit bypass control circuit with DC/DC drive power supply circuit is for its power supply, can satisfy bypass and non-bypass circuit power supply demand simultaneously and guarantee bypass function's validity to the power supply that shares can reduce power size and reduce power device. The bypass power unit power supply circuit also has certain general type, and can be used in various types needing to provide a power unit bypass function.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
FIG. 1 is a functional block diagram of a first preferred embodiment of a bypass power cell power supply circuit of the present invention;
FIG. 2 is a circuit diagram of a second preferred embodiment of the bypass power cell power supply circuit of the present invention;
fig. 3 is a circuit diagram of a third preferred embodiment of the bypass power cell power supply circuit of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Fig. 1 is a schematic block diagram of a first preferred embodiment of a bypass power cell power supply circuit of the present invention. As shown in fig. 1, the bypass power unit power circuit of the present invention includes a DC/DC auxiliary power module 100, a unit control circuit 300, a unit bypass control circuit 400, and a DC/DC driving power circuit 200. The input terminal of the DC/DC auxiliary source module 100 is connected to a DC/DC power supply 500, the first group of output terminals is connected to the unit control circuit 300, and the second group of output terminals is connected to the unit bypass control circuit 400 and the DC/DC driving power supply circuit 200 in parallel.
In the preferred embodiment, the DC/DC auxiliary power module 100, the cell control circuit 300, the cell bypass control circuit 400, and the DC/DC driving power circuit 200 may be respectively constructed by any circuit, chip, or module known in the art. By using one set of output terminals of the DC/DC auxiliary source module 100 as the unit control circuit 300 and the other set of output terminals connected in parallel with the unit bypass control circuit 400 and the DC/DC driving power supply circuit 200 to supply power thereto, the power supply requirements of the bypass and non-bypass circuits can be satisfied at the same time and the effectiveness of the bypass function can be ensured. And the common power supply can reduce the size of the power supply and reduce power devices. The bypass power unit power supply circuit also has certain general type, and can be used in various types needing to provide power unit bypass function
Fig. 2 is a circuit diagram of a second preferred embodiment of the bypass power cell power supply circuit of the present invention. As shown in fig. 2, the bypass power unit power circuit of the present invention includes a DC/DC auxiliary power module 100, a unit control circuit 300, a unit bypass control circuit 400, and a DC/DC driving power circuit 200. The input terminal of the DC/DC auxiliary source module 100 is connected to a DC/DC power supply 500 through a DC capacitor, the first group of output terminals is connected to the unit control circuit 300, and the second group of output terminals is connected to the unit bypass control circuit 400 and the DC/DC driving power supply circuit 200 in parallel.
As further shown in fig. 2, the DC/DC auxiliary source module 100 includes an auxiliary source transformer, a first secondary output module, and a second secondary output module. The secondary source transformer includes a primary input winding 110, a first secondary output winding 120, and a second secondary output winding 130. The first input end of the primary input coil 110 is connected to the positive electrode of the DC/DC power supply 500, the second input end is connected to the negative electrode of the DC/DC power supply 500, the output end of the first secondary output coil 120 is connected to the input end of the first secondary output module, the output end of the first secondary output module is connected to the unit control circuit 300, the output end of the second secondary output coil 130 is connected to the input end of the second secondary output module, and the output end of the second secondary output module is simultaneously connected to the unit bypass control circuit 400 and the DC/DC driving power supply circuit 200.
In this embodiment, the first secondary output module includes a diode D1 and an output capacitor C1. The second secondary output module includes a diode D2 and an output capacitor C2. Of course, those skilled in the art will appreciate that the first and second secondary output modules may also include other suitable devices. As shown in fig. 2, a first input terminal of the primary input coil 110 is connected to the positive terminal of the DC/DC power supply 500, a second input terminal is connected to the negative terminal of the DC/DC power supply 500, an anode of the diode D1 is connected to the first output terminal of the first secondary output coil 120, a cathode of the diode D1 is connected to the first terminal of the output capacitor C1, a second terminal of the output capacitor C1 is connected to the second output terminal of the first secondary output coil 120, and the unit control circuit 300 is connected to the first terminal and the second terminal of the output capacitor C1. An anode of the diode D2 is connected to the first output terminal of the second secondary output winding 130, a cathode of the diode D2 is connected to the first terminal of the output capacitor C2, a second terminal of the output capacitor C2 is connected to the second output terminal of the second secondary output winding 130, and the cell bypass control circuit 400 and the DC/DC driving power supply circuit 200 are connected to the first terminal and the second terminal of the output capacitor C2.
Further, in the preferred embodiment shown in fig. 2, the DC/DC driving power circuit 200 includes a driving transformer and a driving secondary output module. The drive transformer includes a drive primary input winding 210 and a drive secondary output winding 220. The input end of the driving primary side input coil 210 is connected to the first end and the second end of the output capacitor C2, and the output end of the driving secondary side output coil 220 is connected to the driving secondary side output module. The driving secondary output module may also include a diode D9 and an output capacitor C9. In a further preferred embodiment of the present invention, the DC/DC driving power circuit 200 may further include a plurality of driving secondary output coils to output different voltages.
In this embodiment, the DC/DC auxiliary power module 100 including one primary input coil and two secondary output coils is provided, so that different output voltages can be output by using a simple and effective circuit structure, thereby meeting the power supply requirements of the bypass circuit and the non-bypass circuit and ensuring the effectiveness of the bypass function.
Fig. 3 is a circuit diagram of a third preferred embodiment of the bypass power cell power supply circuit of the present invention. As shown in fig. 3, the bypass power unit power circuit of the present invention also includes a DC/DC auxiliary power module 100, a unit control circuit 300, a unit bypass control circuit 400, and a DC/DC driving power circuit 200. In the preferred embodiment shown in fig. 3, another preferred DC/DC auxiliary source module 100 design is shown. Which is further described herein below.
In the preferred embodiment shown in fig. 3, the DC/DC auxiliary source module 100 preferably employs a dual-transistor flyback topology. The DC/DC auxiliary source module 100 includes an auxiliary source transformer, a first auxiliary output module, a second auxiliary output module, a third auxiliary output module, and a fourth auxiliary output module. The secondary source transformer includes a primary input winding 110, a first secondary output winding 120, a second secondary output winding 130, a third secondary output winding 140, and a fourth secondary output winding 150. The primary side input coil 110, the first secondary side output coil 120, the second secondary side output coil 130, the first secondary side output module and the second secondary side output module are similar to those in fig. 2 in structure and principle, and thus will not be described again. The output end of the first secondary output coil 120 is connected to the input end of the first secondary output module, and the output end of the first secondary output module is connected to the unit control circuit 300 to output a positive 5V voltage. The output terminal of the second secondary output winding 130 is connected to the input terminal of the second secondary output block, and the output terminal of the second secondary output block is simultaneously connected to the cell bypass control circuit 400 and the DC/DC driving power circuit 200 to output +48V and-48V voltages.
As shown in fig. 3, the output terminal of the third secondary output coil 140 is connected to the input terminal of the third secondary output module, the output terminal of the third secondary output module is connected to the unit control circuit 300, the output terminal of the fourth secondary output coil 150 is connected to the input terminal of the fourth secondary output module, and the output terminal of the fourth secondary output module is also connected to the unit control circuit 300.
As further shown in fig. 3, the third secondary output module includes a diode D3, an output capacitor C3, an output capacitor C4, and a power management chip U1, wherein a cathode of the diode D3 is connected to the first end of the third secondary output coil 140, an anode of the diode D3 is connected to the first end of the output capacitor C3 and the first end of the power management chip U1, and a second end of the power management chip U1 is connected to the first end of the output capacitor C4 and the cell control circuit 300 to serve as a negative terminal connected to the cell control circuit 300 and provide a voltage of-15V to the cell control circuit 300. The second terminal of the output capacitor C4, the second terminal of the output capacitor C3, the second terminal of the third secondary output coil 140 and the third terminal of the power management chip U1 are grounded to GND. The fourth secondary output module includes a diode D4, an output capacitor C5, an output capacitor C6, and a power management chip U2, wherein an anode of the diode D4 is connected to the first end of the fourth secondary output coil 150, a cathode of the diode D4 is connected to the first end of the output capacitor C5 and the first end of the power management chip U2, and a second end of the power management chip U2 is connected to the first end of the output capacitor C6 and the cell control circuit 300 to serve as a positive terminal connected to the cell control circuit 300 and provide +15V to the cell control circuit 300. The second terminal of the output capacitor C5, the second terminal of the output capacitor C6, the second terminal of the fourth secondary side output coil 150, and the third terminal of the power management chip U2 are grounded.
In this embodiment, the power management chip U1 may be any power management chip known in the art. The cell control circuit 300, the cell bypass control circuit 400, and the DC/DC driving power supply circuit 200 may also be respectively constructed using any circuit, chip, or module known in the art. The auxiliary source transformer and the drive transformer may likewise be of any suitable transformer construction, preferably a high frequency transformer. In the preferred embodiment of the present invention, the capacitors C1-C6 may be aluminum electrolytic capacitors or gold film capacitors, ceramic capacitors, etc.
In this embodiment, by providing the DC/DC auxiliary power module 100 including one primary input coil and four secondary output coils, different output voltages can be output by using a simple and effective circuit structure, thereby meeting the power supply requirements of the bypass and non-bypass circuits and ensuring the effectiveness of the bypass function, and because various voltages can be output, the DC/DC auxiliary power module can be used in various types of power unit bypass function machines which need to be provided.
While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from its scope. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. A bypass power unit power supply circuit is characterized by comprising a DC/DC auxiliary source module, a unit control circuit, a unit bypass control circuit and a DC/DC driving power supply circuit, wherein the input end of the DC/DC auxiliary source module is connected with a DC/DC power supply, a first group of output ends are connected with the unit control circuit, and a second group of output ends are simultaneously connected with the unit bypass control circuit and the DC/DC driving power supply circuit in parallel.
2. The bypass power cell power supply circuit of claim 1, wherein the DC/DC auxiliary source module comprises an auxiliary source transformer, a first secondary output module, and a second secondary output module, the auxiliary source transformer comprises a primary side input coil, a first secondary side output coil and a second secondary side output coil, the first input end of the primary side input coil is connected with the anode of the DC/DC power supply, the second input end of the primary side input coil is connected with the cathode of the DC/DC power supply, the output end of the first secondary output coil is connected with the input end of the first secondary output module, the output end of the first secondary output module is connected with the unit control circuit, the output end of the second secondary output coil is connected with the input end of the second secondary output module, and the output end of the second secondary side output module is simultaneously connected with the unit bypass control circuit and the DC/DC driving power supply circuit.
3. The bypass power cell power supply circuit of claim 2, wherein the first secondary output module comprises a first diode and a first output capacitor, the first diode having an anode connected to the first output terminal of the first secondary output coil and a cathode connected to the first terminal of the first output capacitor, the second terminal of the first output capacitor connected to the second output terminal of the first secondary output coil, and the cell control circuit connected to the first terminal and the second terminal of the first output capacitor.
4. The bypass power cell power supply circuit of claim 3, wherein the second secondary output module includes a second diode and a second output capacitor, an anode of the second diode is connected to the first output terminal of the second secondary output coil, a cathode of the second diode is connected to the first terminal of the second output capacitor, a second terminal of the second output capacitor is connected to the second output terminal of the second secondary output coil, and the cell bypass control circuit and the DC/DC drive power supply circuit are connected to the first terminal and the second terminal of the second output capacitor.
5. The bypass power cell power supply circuit according to claim 4, wherein the DC/DC drive power supply circuit comprises a drive transformer and a drive secondary output module, the drive transformer comprising a drive primary input winding and a drive secondary output winding; the input end of the driving primary side input coil is connected with the first end and the second end of the second output capacitor, and the output end of the driving secondary side output coil is connected with the driving secondary side output module.
6. The bypass power cell power supply circuit according to any of claims 2-5, wherein the auxiliary source transformer further comprises a third secondary output coil and a fourth secondary output coil; the DC/DC auxiliary source module further comprises a third auxiliary edge output module and a fourth auxiliary edge output module, the output end of the third auxiliary edge output coil is connected with the input end of the third auxiliary edge output module, the output end of the third auxiliary edge output module is connected with the unit control circuit, the output end of the fourth auxiliary edge output coil is connected with the input end of the fourth auxiliary edge output module, and the output end of the fourth auxiliary edge output module is also connected with the unit control circuit.
7. The bypass power unit power supply circuit according to claim 6, wherein the third secondary side output module comprises a third diode, a third output capacitor, a fourth output capacitor and a first power management chip, a cathode of the third diode is connected to the first end of the third secondary side output coil, an anode of the third diode is connected to the first end of the third output capacitor and the first end of the first power management chip, a second end of the first power management chip is connected to the first end of the fourth output capacitor, a second end of the third secondary side output coil and a third end of the first power management chip are grounded, and a second end of the first power management chip is a negative end connected to the unit control circuit.
8. The power supply circuit of claim 6, wherein the fourth secondary side output module comprises a fourth diode, a fifth output capacitor, a sixth output capacitor and a second power management chip, an anode of the fourth diode is connected to the first end of the fourth secondary side output coil, a cathode of the fourth diode is connected to the first end of the fifth output capacitor and the first end of the second power management chip, the second end of the second power management chip is connected to the first end of the sixth output capacitor, the second end of the fifth output capacitor, the second end of the sixth output capacitor, the second end of the fourth secondary side output coil and the third end of the second power management chip are grounded, and the second end of the second power management chip is a positive terminal connected to the unit control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121339428.0U CN215120572U (en) | 2021-06-16 | 2021-06-16 | Bypass power unit power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121339428.0U CN215120572U (en) | 2021-06-16 | 2021-06-16 | Bypass power unit power supply circuit |
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| Publication Number | Publication Date |
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| CN215120572U true CN215120572U (en) | 2021-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121339428.0U Active CN215120572U (en) | 2021-06-16 | 2021-06-16 | Bypass power unit power supply circuit |
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| CN (1) | CN215120572U (en) |
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- 2021-06-16 CN CN202121339428.0U patent/CN215120572U/en active Active
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Effective date of registration: 20240112 Address after: 518055 B2, Nanshan Zhiyuan, 1001 Nanshan District Xue Yuan Avenue, Shenzhen, Guangdong. Patentee after: VERTIV TECH Co.,Ltd. Address before: 712000 room 804, 8th floor, building 14, West Yungu phase I, Fengxi new town, Xixian new area, Shaanxi Province Patentee before: Weidi new energy Co.,Ltd. |