CN211123198U - High-voltage direct-current power supply running state detection circuit - Google Patents
High-voltage direct-current power supply running state detection circuit Download PDFInfo
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- CN211123198U CN211123198U CN201921964448.XU CN201921964448U CN211123198U CN 211123198 U CN211123198 U CN 211123198U CN 201921964448 U CN201921964448 U CN 201921964448U CN 211123198 U CN211123198 U CN 211123198U
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Abstract
The utility model provides a high voltage direct current power supply running state detection circuitry is connected with high voltage direct current power supply control unit, including a plurality of DC modules, every the DC module is connected with state detection circuitry respectively, state detection circuitry is including the signal conditioning unit, photoelectric isolation unit, the signal detection unit that connect gradually, the signal conditioning unit is connected with DC module, the signal detection unit is connected with high voltage direct current power supply control unit. The utility model discloses do not increase auxiliary winding or supplementary power supply, use the running state of a small amount of devices just can each DC/DC module in the real-time detection high voltage direct current power supply to obtain the running state of whole high voltage direct current power supply, can in time report to the police to the staff when DC/DC module trouble or running state are unusual, thereby in time solve the trouble, make high voltage direct current electrical power generating system can high-efficient continuous operation.
Description
Technical Field
The utility model relates to a high pressure detects technical field, in particular to high voltage direct current power supply running state detection circuitry.
Background
At present, in a high-voltage direct-current power supply system, a high-voltage direct-current power supply is generally required to perform voltage reduction processing on high-voltage direct current, and the high-voltage direct-current power supply generally adopts a topological circuit structure that a plurality of modules are connected in series in input and in parallel in output. In the series connection mode, if one of the modules fails, the operation of the whole high-voltage direct-current power supply is affected. Therefore, it is very important to detect the operating state of the high voltage dc power supply.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to improve exist not enough among the prior art, provide a high voltage direct current power supply running state detection circuitry to the running state of each submodule piece in the real-time detection high voltage direct current power supply can in time report to the police when certain submodule piece trouble or running state are unusual, thereby in time solve the trouble, make high voltage direct current electrical power generating system can high-efficient continuous operation, do not influence normal work.
In order to realize the purpose of the utility model, the embodiment of the utility model provides a following technical scheme:
the high-voltage direct-current power supply operation state detection circuit is connected with a high-voltage direct-current power supply control unit and comprises a plurality of DC/DC modules, wherein each DC/DC module is connected with a state detection circuit, each state detection circuit comprises a signal conditioning unit, a photoelectric isolation unit and a signal detection unit, the signal conditioning unit, the photoelectric isolation unit and the signal detection unit are sequentially connected, the signal conditioning unit is connected with the DC/DC modules, and the signal detection unit is connected with the high-voltage direct-current power supply control unit.
Furthermore, for better realization the utility model discloses, the DC/DC module is including power component, transformer, the rectification subassembly that connects gradually, every the input of the power component of DC/DC module is established ties in proper order.
Furthermore, for better realization the utility model discloses, state detection circuit still includes sampling resistor, sampling resistor connects between the secondary limit of transformer and signal conditioning unit.
The secondary side of a transformer of each DC/DC module of the high-voltage direct-current power supply is connected with a state detection circuit in parallel, when the DC/DC modules operate, the voltage and the current of the secondary side of the transformer are sampled by a sampling resistor and then conditioned by a signal conditioning unit, the conditioned voltage and current are processed by a photoelectric isolation unit and then transmitted to a high-voltage direct-current power supply control unit by a signal detection unit, and further the operating output condition of each DC/DC module is obtained so as to obtain the operating state of the high-voltage direct-current power supply.
Further, for better realization the utility model discloses, signal conditioning unit includes rectifier bridge VD, divider resistance, IC supply circuit, sample comparison circuit, divider resistance and IC supply circuit parallel connection to rectifier bridge VD's output, divider resistance are connected to sample comparison circuit's input, sample comparison circuit's output and photoelectric isolation unit are connected.
Still further, for better realization the utility model discloses, divider resistance includes resistance R3, resistance R4, IC supply circuit includes resistance R5, electric capacity C1, resistance R3's one end, resistance R5's one end are connected with an output of rectifier bridge VD respectively, and resistance R5's the other end is connected with electric capacity C1's one end, and resistance R3's the other end is connected with sample comparison circuit's input, resistance R4's one end respectively, and resistance R4's the other end, electric capacity C1's the other end is connected with another output of rectifier bridge VD.
Still further, for better realization the utility model discloses, the sample comparison circuit includes overvoltage comparator U1, undervoltage comparator U2, overvoltage comparator U1's input, undervoltage comparator U2's input are connected to between resistance R3 and resistance R4 jointly, and overvoltage comparator U1's output, undervoltage comparator U2's output all are connected with the optoelectronic isolation unit.
Still further, for better realization the utility model discloses, the optoelectronic isolation unit is the opto-coupler device.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a state detecting element draws the operating parameter back of DC/DC module from the transformer secondary side, feeds back the operating condition of each DC/DC module to high voltage direct current power supply control unit through signal conditioning unit, photoelectric isolation unit and signal detection unit to detect and discern the operating condition of high voltage direct current power supply. The utility model discloses do not increase auxiliary winding or supplementary power supply, use the running state of a small amount of devices just can each DC/DC module in the real-time detection high voltage direct current power supply to obtain the running state of whole high voltage direct current power supply, can in time report to the police to the staff when DC/DC module trouble or running state are unusual, thereby in time solve the trouble, make high voltage direct current electrical power generating system can high-efficient continuous operation.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic diagram of the module structure of the present invention;
fig. 2 is a schematic diagram of the signal conditioning unit circuit of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
The utility model discloses a following technical scheme realizes, as shown in FIG. 1, a high voltage direct current power supply running state detection circuitry is connected with high voltage direct current power supply control unit, including a plurality of DC modules, every the DC module is including the power component, transformer, the rectification subassembly that connect gradually, and a plurality of power component's input is established ties in proper order, every the DC module is connected with a state detection circuitry respectively for the running state of detection power component and transformer.
The state detection circuit comprises a sampling resistor, a signal conditioning unit, a photoelectric isolation unit and a signal detection unit, wherein the sampling resistor is connected between the secondary side of the transformer and the input end of the signal conditioning unit, the output end of the signal conditioning unit is connected with the input end of the photoelectric isolation unit, the output end of the photoelectric isolation unit is connected to the signal detection unit, and the signal detection unit processes the received running state signal of the DC/DC module and then sends the running state signal to the high-voltage direct-current power supply control unit.
The secondary side of a transformer of each DC/DC module of the high-voltage direct-current power supply is connected with a state detection circuit in parallel, when the DC/DC modules operate, the voltage and the current of the secondary side of the transformer are sampled by a sampling resistor and then conditioned by a signal conditioning unit, the conditioned voltage and current are processed by a photoelectric isolation unit and then transmitted to a high-voltage direct-current power supply control unit by a signal detection unit, and further the operating output condition of each DC/DC module is obtained so as to obtain the operating state of the high-voltage direct-current power supply.
Specifically, as shown in fig. 2, the signal conditioning unit includes a rectifier bridge VD, a voltage dividing resistor, an IC power supply circuit, and a sampling comparison circuit, where the voltage dividing resistor includes a resistor R3 and a resistor R4, the IC power supply circuit includes a resistor R5 and a capacitor C1, the sampling comparison circuit includes an overvoltage comparator U1 and an undervoltage comparator U2, one end of the resistor R3 and one end of the resistor R5 are respectively connected to one output end of the rectifier bridge VD, the other end of the resistor R5 is connected to one end of the capacitor C1, the other end of the resistor R3 is respectively connected to an input end of the sampling comparison circuit and one end of the resistor R4, and the other end of the resistor R4 and the other end of the capacitor C1 are connected to another output end of the rectifier bridge VD. The input end of the overvoltage comparator U1 and the input end of the undervoltage comparator U2 are connected between the resistor R3 and the resistor R4, and the output end of the overvoltage comparator U1 and the output end of the undervoltage comparator U2 are connected with the photoelectric isolation unit.
The sampling resistor is connected to the secondary side of the transformer to obtain voltage and current signals, alternating current is converted into direct current through the rectifier bridge VD, the divider resistor divides the converted direct current through the divider resistors R3 and R4, the IC power supply circuit provides a working power supply for the sampling comparison circuit after filtering through the resistor R5 and the capacitor C1, the signal obtained by the input end of the sampling comparison circuit is compared with reference voltage VH and V L to obtain the running state of the high-voltage direct-current power supply, the high-voltage electrical signal is converted into an optical signal through the photoelectric isolation unit, the optical signal is converted into a low-voltage electrical signal and then transmitted to the signal detection unit, the photoelectric isolation unit is an optical coupler device, and the obtained running state of the high-voltage direct-current power supply is transmitted to the high-voltage direct.
The utility model discloses a state detecting element draws the operating parameter back of DC/DC module from the transformer secondary side, feeds back the operating condition of each DC/DC module to high voltage direct current power supply control unit through signal conditioning unit, photoelectric isolation unit and signal detection unit to detect and discern the operating condition of high voltage direct current power supply. The utility model discloses do not increase auxiliary winding or supplementary power supply, use the running state of a small amount of devices just can each DC/DC module in the real-time detection high voltage direct current power supply to obtain the running state of whole high voltage direct current power supply, can in time report to the police to the staff when DC/DC module trouble or running state are unusual, thereby in time solve the trouble, make high voltage direct current electrical power generating system can high-efficient continuous operation.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. A high voltage direct current power supply operation state detection circuit is connected with a high voltage direct current power supply control unit, and comprises a plurality of DC/DC modules, and is characterized in that: each DC/DC module is respectively connected with a state detection circuit, each state detection circuit comprises a signal conditioning unit, a photoelectric isolation unit and a signal detection unit, the signal conditioning units, the photoelectric isolation units and the signal detection units are sequentially connected, the signal conditioning units are connected with the DC/DC modules, and the signal detection units are connected with the high-voltage direct-current power supply control unit.
2. The operating condition detecting circuit for high-voltage direct current power supply according to claim 1, characterized in that: the DC/DC module comprises a power component, a transformer and a rectifying component which are connected in sequence, and the input end of the power component of each DC/DC module is connected in series in sequence.
3. The operating condition detecting circuit for high-voltage direct current power supply according to claim 2, characterized in that: the state detection circuit further comprises a sampling resistor, and the sampling resistor is connected between the secondary side of the transformer and the signal conditioning unit.
4. The operating condition detecting circuit for high-voltage direct current power supply according to claim 2, characterized in that: the signal conditioning unit comprises a rectifier bridge VD, a divider resistor, an IC power supply circuit and a sampling comparison circuit, wherein the divider resistor and the IC power supply circuit are connected to the output end of the rectifier bridge VD in parallel, the divider resistor is connected to the input end of the sampling comparison circuit, and the output end of the sampling comparison circuit is connected with the photoelectric isolation unit.
5. The operating condition detecting circuit for high-voltage direct current power supply according to claim 4, wherein: the divider resistance includes resistance R3, resistance R4, IC supply circuit includes resistance R5, electric capacity C1, resistance R3's one end, resistance R5's one end are connected with an output of rectifier bridge VD respectively, resistance R5's the other end is connected with electric capacity C1's one end, resistance R3's the other end is connected with sample comparison circuit's input, resistance R4's one end respectively, resistance R4's the other end, electric capacity C1's the other end is connected with another output of rectifier bridge VD.
6. The operating condition detecting circuit for high-voltage direct current power supply according to claim 5, wherein: the sampling comparison circuit comprises an overvoltage comparator U1 and an undervoltage comparator U2, wherein the input end of the overvoltage comparator U1 and the input end of the undervoltage comparator U2 are connected between a resistor R3 and a resistor R4, and the output end of the overvoltage comparator U1 and the output end of the undervoltage comparator U2 are connected with a photoelectric isolation unit.
7. The operating condition detection circuit of a high-voltage direct current power supply according to any one of claims 1 to 6, characterized in that: the photoelectric isolation unit is an optical coupler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921964448.XU CN211123198U (en) | 2019-11-14 | 2019-11-14 | High-voltage direct-current power supply running state detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921964448.XU CN211123198U (en) | 2019-11-14 | 2019-11-14 | High-voltage direct-current power supply running state detection circuit |
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| Publication Number | Publication Date |
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| CN211123198U true CN211123198U (en) | 2020-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921964448.XU Active CN211123198U (en) | 2019-11-14 | 2019-11-14 | High-voltage direct-current power supply running state detection circuit |
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| CN (1) | CN211123198U (en) |
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- 2019-11-14 CN CN201921964448.XU patent/CN211123198U/en active Active
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