CN115185333A - Preceding-stage uninterrupted failure redundancy structure of solid-state power source - Google Patents
Preceding-stage uninterrupted failure redundancy structure of solid-state power source Download PDFInfo
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- CN115185333A CN115185333A CN202210814203.9A CN202210814203A CN115185333A CN 115185333 A CN115185333 A CN 115185333A CN 202210814203 A CN202210814203 A CN 202210814203A CN 115185333 A CN115185333 A CN 115185333A
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- 230000017525 heat dissipation Effects 0.000 description 4
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/66—Regulating electric power
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- G—PHYSICS
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- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B9/00—Safety arrangements
- G05B9/02—Safety arrangements electric
- G05B9/03—Safety arrangements electric with multiple-channel loop, i.e. redundant control systems
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- H—ELECTRICITY
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- H05K5/02—Details
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- H—ELECTRICITY
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Abstract
The invention relates to a preceding stage uninterrupted failure redundancy structure of a solid state power source, which comprises: the input end of the power divider is connected with the output end of the input control unit and used for redistributing the power of the received signals, and the number of output ports of the power divider is at least eight; the front-stage low-power amplifiers are at least eight in number, are respectively connected with the output ports of the power divider, and are used for amplifying and outputting the received redistributed signal power; and the input end of the power synthesizer is connected with the output end of each pre-stage low-power amplifier, and the received amplified signals are subjected to power synthesis and then transmitted to the final-stage power amplifier unit through a power transmission line. The invention can compensate the failure of the preceding stage under the low-level closed loop without interruption, and has very high reliability and realizability. The invention can be applied in the field of accelerators.
Description
Technical Field
The invention relates to the technical field of accelerators, in particular to a preceding-stage uninterrupted failure redundancy structure of a solid-state power source.
Background
The all-solid-state power source system has the characteristics of low working voltage, stable and reliable performance, low failure rate, easiness in maintenance, low maintenance cost and the like, and is more and more widely applied to the field of accelerators in recent years. However, in some places with higher stability requirements, the power source with fault output power is required to meet the beam availability index, the final-stage power amplifier can ensure the influence caused by the failure of individual modules by improving the power capacity of other power amplifiers, but the former-stage power amplifier adopts a serial form, and the serious consequence of radio frequency shutdown can be caused under the condition of single failure, so that the beam is subjected to irreversible mismatch. The current duplexer design necessarily has a small time gap, typically around 10ms, which is very dangerous for the low level of closed loop operation.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a preceding-stage uninterrupted failure redundancy structure of a solid-state power source, which can compensate for a preceding-stage failure under a low-level closed loop without interruption, and has very high reliability and realizability.
In order to achieve the purpose, the invention adopts the following technical scheme: a preceding stage uninterrupted failure redundancy architecture for a solid state power source, comprising: the input end of the power divider is connected with the output end of the input control unit and used for redistributing the received signal power, and the number of output ports of the power divider is at least eight; the front-stage low-power amplifiers are at least eight in number, are respectively connected with the output ports of the power divider, and are used for amplifying and outputting the received redistributed signal power; and the input end of the power synthesizer is connected with the output end of each pre-stage low-power amplifier, and the received amplified signals are subjected to power synthesis and then transmitted to the final-stage power amplifier unit through a power transmission line.
Further, a balance resistor is arranged in each of the power divider and the power combiner.
Furthermore, a plug-in structure is adopted between the preceding-stage low-power amplifier and the power divider and between the preceding-stage low-power amplifier and the power combiner.
Further, the front-stage low-power amplifier adopts a metal edge-wrapped structure; and the front stage shell gap is subjected to radiation protection design.
Further, the uninterrupted failure compensation that the preceding-stage uninterrupted failure redundant structure of the solid-state power source can realize is specifically realized by the following steps:
distributing the received signal power to a plurality of front-stage low-power amplifiers through a power distributor, amplifying, and transmitting to a power synthesizer for synthesis;
when one or more preceding stage low-power amplifiers have faults, other preceding stage low-power amplifiers can keep a normal working state, the power cannot drop to zero, and the beam current cannot be influenced under the condition of amplitude closed loop without interruption.
Due to the adoption of the technical scheme, the invention has the following advantages:
1. the invention adopts a modular structure, and is beneficial to product industrialization.
2. The preceding stage plug-in unit, the power distributor, the power supply and the communication control unit adopt a plug-in structure, so that the replacement and maintenance of a single plug-in unit are facilitated.
3. The invention can realize the uninterrupted failure compensation of the front stage, the power after failure falls, and the falling degree can meet the operation requirement of low level.
4. The invention changes a single high-power driving front stage into eight low-power front stages which are connected in parallel for working.
5. The invention divides a single front stage into eight low-power front stages, so that the power density is reduced, the cooling design can be changed into natural cooling, and the design is simplified.
6. According to the electromagnetic compatibility design, the front stage plug-in adopts a metal edge-covered structure; conductive rubber strips are filled between the gaps of the cabinet, so that the external interference is reduced, and the signal-to-noise ratio of small signals is improved.
Drawings
Fig. 1 is a schematic diagram of a duplex switching manner adopted by a preceding stage backup in the prior art;
fig. 2 is a schematic diagram of a preceding-stage uninterrupted failure redundancy structure of a solid-state power source according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention, are within the scope of the invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
As shown in fig. 1, according to actual measurement, a duplex switching manner adopted by a conventional backing up stage can provide a discontinuous gap of about 10ms at the fastest speed, and under the condition of a low-level closed loop, the instantaneous excitation changes very severely, and if the power source output is strictly required, especially under the condition of the current accelerator operation, a certain pressure exists. Therefore, the invention provides a non-interrupted preceding stage redundancy structure based on a synthesizer scheme to reduce the implementation of preceding stage redundancy and low level system pressure.
The invention provides a preceding-stage uninterrupted failure redundancy structure of a solid-state power source, which is applied to a solid-state power source system in the field of accelerators, in particular to a preceding stage of power amplifier equipment. The invention comprises the following steps: the input end of the power divider is connected with the output end of the input control unit and used for redistributing the received signal power, and the number of output ports of the power divider is at least eight; the front-stage low-power amplifiers are at least eight in number, are respectively connected with the output ports of the power divider, and are used for amplifying and outputting the received redistributed signal power; and the input end of the power synthesizer is connected with the output end of each pre-stage low-power amplifier, and the received amplified signal power is synthesized and then transmitted to the final-stage power amplifier unit through a power transmission line. The technical scheme adopted by the invention effectively solves the problems in the prior art, and when the front-stage power amplifier fails, the invention can avoid beam loss caused by power interruption or over derivation, and meanwhile, the power drop range of the invention is controllable in the whole process. Moreover, under the working condition of long-term operation of the front stage of the solid-state power source, when a fault occurs, interruption or over-pushing of a closed-loop system caused by plug-in switching can not be generated, and a power drop value generated after a certain plug-in is in fault can be effectively controlled through the method and the device, so that the problem of neck clamping of the MTBF power amplifier in the front stage of high-reliability operation equipment is fundamentally solved.
In one embodiment of the invention, a preceding-stage uninterrupted failure redundancy architecture for a solid-state power source is provided. In this embodiment, as shown in fig. 2, the structure includes:
the input end of the power divider is connected with the output end of the input control unit and used for redistributing the received signal power, and the number of output ports of the power divider is at least eight;
the front-stage low-power amplifiers are at least eight in number, are respectively connected with each output port of the power divider, and are used for amplifying and outputting the received redistributed signal power;
and the input end of the power synthesizer is connected with the output end of each preceding stage of low-power amplifier, and the received amplified signals are subjected to power synthesis and then transmitted to the final stage power amplifier unit through a power transmission line.
In the above embodiments, the power divider and the power combiner may have a balancing resistor built therein to sufficiently solve the problem of imbalance of the rf signal.
Wherein the specific calculation of the power splitter, i.e. the port failure analysis of the power splitter architecture. If the balance resistor is not arranged, the vector operation of the phase is required to be considered, after a certain port fails, a single port of the one-eight power divider is opened, the power redistribution of a radio frequency system formed by the open-circuit phase and other seven ports is combined, and the calculation is complex.
The invention adopts the technical scheme that the balancing resistors are arranged in the power divider and the power combiner, when one port of eight output ends of the power divider fails, the stability of one to eight can be kept to the maximum extent due to the existence of the balancing resistors, and the lost power can be generally directly used as a formula (1-7) 2 /8 2 ) The estimation is performed so that more ports are allocated less power is lost.
Because the existing balance resistor is embedded between circuit networks, if a large number of input ports exist, the resistor needs to be connected between every two stages, a complex star connection method needs to be adopted, meanwhile, very small insertion phase shift is required to reduce the influence of distribution parameters, the resistor is very difficult to realize a heat dissipation function in the circuit networks, and the synthesizer has a complex structure and low reliability under high power. For example, in a high power situation, heat dissipation is almost always considered, and the requirement for cooling the resistor is high, so that it is difficult to provide the balancing resistor. According to the invention, a plurality of front-stage low-power amplifiers are adopted, and then the balance resistor is added, so that the heat dissipation problem after the balance resistor is added is hardly considered under the low-power condition.
In the above embodiment, preferably, the number of the output ports of the power divider is eight, and the number of the front-stage low-power amplifiers is eight, so that the power drop can be ensured to be more than 70%. The more the output ports of the power divider and the front-stage low-power amplifier are set, the better the power divider is.
In the above embodiment, the preceding-stage low-power amplifier, the power divider, and the power combiner adopt a plug-in structure, and the power supply and communication control unit in each preceding-stage low-power amplifier also adopts a plug-in structure with the preceding-stage low-power amplifier.
In the embodiment, the front-stage low-power amplifier adopts a metal edge-covered structure; and the front stage shell gap is subjected to radiation protection design.
In the above embodiment, the method for implementing uninterrupted failure compensation by using the preceding-stage uninterrupted failure redundancy structure of the solid-state power source of the present invention includes:
distributing the received signal power to a plurality of front-stage low-power amplifiers through a power distributor, amplifying, and transmitting to a power synthesizer for synthesis;
when one or more preceding stage low-power amplifiers have faults, other preceding stage low-power amplifiers can keep a normal working state, so that the power cannot fall to zero, namely, the interruption is avoided, the influence on beam current is hardly generated under the condition of amplitude closed loop, and the operation MTBF of the multiple preceding stage low-power amplifiers on the whole machine is far superior to the operation of a single high-power amplifier.
In this embodiment, as shown in fig. 1, an old "switching scheme" adopts a single power amplifier pre-stage design, and an N w high-power pre-stage provides a driving stage for the entire cabinet, and the occurrence of a fault thereof will seriously affect the power output of the entire cabinet. When a fault occurs, when the monitoring system detects that the power is reduced to 0, the power amplifier is automatically switched to another hot standby power amplifier preceding stage, the switching time is generally 10-20ms, namely, the power output is interrupted, and in the whole process, because the amplitude of a low-level system is stabilized in a closed-loop state, the power can not be always kept at an original rated value, especially in an interruption gap, the beam loss during the period can be inevitably caused, and even the shutdown is caused by the chain protection of the whole machine due to the overlarge pushing, so that the great loss of the beam time is caused.
The uninterrupted design adopted by the application is as shown in fig. 2, the structure that N front-stage low-power amplifiers of N/N watts are connected in parallel for amplification is adopted, because the power of each front-stage low-power amplifier is reduced by N times, the design of the power divider and the synthesizer is simple and reliable, the heat dissipation problem of the balance resistor is easily solved, and the drop of the power can be completely controlled by the selection of the N value. And most importantly, when one or more preceding-stage low-power amplifiers have faults, the power cannot drop to zero, namely, the interruption is avoided, the influence on beam current is hardly generated under the condition of amplitude closed loop, and the operation MTBF of the preceding-stage low-power amplifiers of N N/N watts is far superior to the operation of a single high-power amplifier of N watts.
When the power combiner is used, the power of a single plug-in unit after failure is reduced to 76.6% of the original value, and due to the fact that the output of the power combiner is provided with the balance resistor, signals are not interrupted, and under the low-level closed-loop control, the reduced 13.4% power drop can be compensated by increasing excitation. After precise calculation, a seven-in-one or six-in-one scheme can be used instead, and the premise is that a larger power drop can be compensated by the full amount of a low-level system, so that the cost can be further reduced.
In conclusion, the invention has the advantages of no power cut-off and controllable falling amplitude after the front-stage module fails, and has the capability of splitting and recombining, the complexity of a cooling system is reduced, and the like.
The power drop is only about 15% after the failure, and the method is different from the conventional hot standby switching scheme, the power signal has no drop gap at all, and the method has the advantages of safety, stability and reliability for a low-level closed-loop system (the power drops to zero instantly, the low level can promote excitation with the maximum capacity, is very dangerous, and is difficult to recover to a rated value in a short time), and has very high practical value for a long-term closed-loop operation system.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (5)
1. A preceding-stage uninterrupted failure redundancy structure of a solid-state power source, comprising:
the input end of the power divider is connected with the output end of the input control unit and used for redistributing the received signal power, and the number of output ports of the power divider is at least eight;
the front-stage low-power amplifiers are at least eight in number, are respectively connected with the output ports of the power divider, and are used for amplifying and outputting the received redistributed signal power;
and the input end of the power synthesizer is connected with the output end of each pre-stage low-power amplifier, and the received amplified signals are subjected to power synthesis and then transmitted to the final-stage power amplifier unit through a power transmission line.
2. The preceding uninterrupted failure redundancy arrangement for a solid state power source of claim 1, wherein a balancing resistor is built into both the power splitter and the power combiner.
3. The preceding stage uninterrupted failure redundancy architecture of the solid state power source of claim 1, wherein a plug-in structure is employed between the preceding stage low power amplifier and the power divider and the power combiner.
4. The preceding stage uninterrupted failure redundancy structure of the solid-state power source according to claim 1, wherein the preceding stage low-power amplifier adopts a metal-clad structure; and the front stage shell gap is subjected to radiation protection design.
5. The preceding-stage uninterrupted failure redundancy structure of the solid-state power source according to claim 1, wherein the preceding-stage uninterrupted failure redundancy structure of the solid-state power source is capable of achieving uninterrupted failure compensation by:
distributing the received signal power to a plurality of front-stage low-power amplifiers through a power distributor, amplifying, and transmitting to a power synthesizer for synthesis;
when one or more preceding stage low-power amplifiers have faults, other preceding stage low-power amplifiers can keep a normal working state, the power cannot drop to zero, and the beam current cannot be influenced under the condition of amplitude closed loop without interruption.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210814203.9A CN115185333A (en) | 2022-07-12 | 2022-07-12 | Preceding-stage uninterrupted failure redundancy structure of solid-state power source |
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| CN202210814203.9A CN115185333A (en) | 2022-07-12 | 2022-07-12 | Preceding-stage uninterrupted failure redundancy structure of solid-state power source |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202841065U (en) * | 2012-07-31 | 2013-03-27 | 北京北广科技股份有限公司 | Power amplification device |
| CN105245238A (en) * | 2015-10-21 | 2016-01-13 | 成都六三零电子设备有限公司 | 650MHz/150kW solid-state transmitter |
| CN205105198U (en) * | 2015-10-21 | 2016-03-23 | 成都六三零电子设备有限公司 | Solid -state transmitter of 325MHz25kW |
| CN207410334U (en) * | 2017-09-29 | 2018-05-25 | 成都六三零电子设备有限公司 | A kind of microwave transmitter |
| CN112953425A (en) * | 2021-04-02 | 2021-06-11 | 重庆邮电大学 | Balanced type broadband high-power amplifier based on band-pass filter |
-
2022
- 2022-07-12 CN CN202210814203.9A patent/CN115185333A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202841065U (en) * | 2012-07-31 | 2013-03-27 | 北京北广科技股份有限公司 | Power amplification device |
| CN105245238A (en) * | 2015-10-21 | 2016-01-13 | 成都六三零电子设备有限公司 | 650MHz/150kW solid-state transmitter |
| CN205105198U (en) * | 2015-10-21 | 2016-03-23 | 成都六三零电子设备有限公司 | Solid -state transmitter of 325MHz25kW |
| CN207410334U (en) * | 2017-09-29 | 2018-05-25 | 成都六三零电子设备有限公司 | A kind of microwave transmitter |
| CN112953425A (en) * | 2021-04-02 | 2021-06-11 | 重庆邮电大学 | Balanced type broadband high-power amplifier based on band-pass filter |
Non-Patent Citations (1)
| Title |
|---|
| 高鹏辉等: "CiADS固态功率源的可用性设计与分析", 原子核物理评论, vol. 35, no. 3, 30 September 2018 (2018-09-30), pages 287 - 293 * |
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