CN106533222A - PSM high-voltage power supply system and feedback control realization method therefor - Google Patents
PSM high-voltage power supply system and feedback control realization method therefor Download PDFInfo
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- CN106533222A CN106533222A CN201611166333.7A CN201611166333A CN106533222A CN 106533222 A CN106533222 A CN 106533222A CN 201611166333 A CN201611166333 A CN 201611166333A CN 106533222 A CN106533222 A CN 106533222A
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- 230000033228 biological regulation Effects 0.000 claims description 4
- 230000004308 accommodation Effects 0.000 claims description 3
- 230000000052 comparative effect Effects 0.000 claims description 3
- 230000009514 concussion Effects 0.000 claims description 3
- 238000005562 fading Methods 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 3
- 238000002955 isolation Methods 0.000 abstract description 4
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- 230000008713 feedback mechanism Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/40—Conversion of ac power input into dc power output without possibility of reversal by combination of static with dynamic converters; by combination of dynamo-electric with other dynamic or static converters
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Abstract
The invention discloses a PSM high-voltage power supply system and a feedback control realization method therefor. The PSM high-voltage power supply system comprises a high-voltage wire-inlet part, wherein the high-voltage wire-inlet part is formed by two high-voltage circuit breaker cabinets which are connected with a high-voltage contactor cabinet in series separately; two high-voltage contactor cabinets are connected with a multi-winding high-voltage isolation transformer separately; the multi-winding high-voltage isolation transformer is connected with low-frequency rectifying power supply modules and high-frequency rectifying power supply modules separately; and the low-frequency rectifying power supply modules and the high-frequency rectifying power supply modules are all connected in series and then connected to a load. By adoption of the PSM high-voltage power supply system and the feedback control realization method therefor, the problem of severe fluctuation on high-voltage output caused by power grid disturbance in a discharging period of an EAST apparatus is well solved, so that the control requirement of a klystron on voltage precision is satisfied, thereby satisfying requirements of various physical experiments.
Description
Technical field
The present invention relates to the high voltage power supply technical field based on PSM technologies, more particularly to a kind of PSM high voltage power supplies system
System and its feedback control implementation method.
Background technology
Used as the emphasis of the recent years of research both at home and abroad, PSM switch power technologies quickly grow and auxiliary in tokamak
Help and in heating high voltage power supply, obtain a large amount of successfully applications.Based on the high voltage power supply of PSM switch power technologies be with
Single rectifier power supply module is core, realizes the foundation of final high direct voltage using the series connection of multiple modules, in control strategy
Middle introducing negative feedback mechanism, can improve voltage control accuracy by automatically increasing or decreasing for module, so as to reduce various disturbances to defeated
Go out the impact of voltage.
For the various disturbances in the range of design parameter, by reducing the feedback control step-length time in certain span of control
Feedback control speed is improved, voltage control accuracy can be significantly improved.But amplitude, speed when disturbance etc. exceed design load
When, high voltage power supply just cannot be responded accurately and in time to ensure voltage control accuracy, so as to meet load
Demand for control.
The feedback control speed of system depend on three below in terms of impact, one is the intrinsic response time of system, two
It is computing and the control performance of controller, three is the switching frequency of rectifier power supply module.Under normal circumstances, system response time exist
Substantially determine after the completion of design, the speed of controller is also far beyond the governing speed of module, and the switch of rectifier power supply module
Frequency is due to having a larger association with cost, therefore is typically based on load and needs to choose design load, does not have too big allowance.
So if wish by continuing to improve the feedback control speed perturbed problem too fast or excessive to solve system,
Require that rectifier power supply module has higher switching frequency, and its development difficulty is increased and cost with the raising of switching frequency
To dramatically increase, root is it is estimated that the rectification module for possessing 1kHz switching capabilities is about higher by 50% than the rectification module cost of 100Hz.
A kind of new PSM high voltage power supplies and feedback are how realized, the adaptability of system while cost-effective, is improved so as to
The performance requirement under various disturbances is disclosure satisfy that, is just particularly important.
The content of the invention
The object of the invention is exactly for the defect for making up prior art, there is provided a kind of PSM high voltage power supplies and its
Feedback control implementation method.
The present invention is achieved by the following technical solutions：
A kind of PSM high voltage power supplies, include high pressure wire inlet unit, and described high pressure wire inlet unit is by two primary cut-outs
Connect respectively high voltage connector cabinet of cabinet is constituted, and two high voltage connector cabinets connect a Multiple coil high_voltage isolation transformation respectively
Device, Multiple coil high voltage isolating transformer connect low frequency rectifier power supply module and high-frequency rectification power module, low frequency rectified current respectively
Source module and high-frequency rectification power module are connected to load after all connecting, the number of described low frequency rectifier power supply module is Nlf
Individual, " lf " expression " Low Frequency ", module numbering are respectively（1#, 2# ... ..., Nlf#）, described high-frequency rectification power supply
The number of module is NhfIndividual, " hf " expression " High Frequency ", module numbering are respectively（1#, 2# ... ..., Nhf#）, it is low
Quantity N of frequency rectifier power supply modulelfWith quantity N of high-frequency rectification power modulehfSum is separate unit Multiple coil high_voltage isolation
The twice of transformer secondary winding quantity, quantity N of low frequency rectifier power supply modulelfWith quantity N of high-frequency rectification power modulehf
Configuration be typically chosen in 9:1, the configuration can need to adjust accordingly according to system.
A kind of feedback control implementation method of PSM high voltage power supplies,（1）Pre-set output voltage value V firstref, in open loop
Rise time interval Tr, open loop fall time interval Tf, closed loop sampled operational cycle Ts；
（2）Determine voltage control nargin VΔ, it is individual module output electricity that the voltage of PSM structures high voltage power supply controls nargin in theory
The half of pressure, i.e. Vs/ 2, in order to avoid the excessive regulation of system causes concussion, suitably increase the numerical value, value V in controls/
10, so as to ensure the stability of system fading margin, then VΔ= Vs/2+ Vs/10= 0.6Vs；
（3）Automatic Program calculates estimated starting module number N, according to X=Vref/ Vs, X is not integer, and X is rounded up
To N；
（4）According to N- Nhf/ 2 draw the low frequency number of modules that plan puts into operation；
（5）After PSM high voltage power supplies receive enabling signal, open from 1# low frequencies module immediately, be spaced TrTime is one by one
It is opened into（N- Nhf/2）# low frequency modules, subsequently enter the negative feedback control stage；
（6）In a closed loop sampling period TsWithin time, system acquisition feedback sample value VfdWith voltage set-point VrefCompare
Compared with being proceeded as follows to high-frequency rectification power module according to comparative result：Increase, keep or reduce, due to high-frequency rectification
Power module limited amount, therefore its range of accommodation has certain restriction, 1# high-frequency models are lower limit, Nhf# high-frequency models are upper
Limit, increases to NhfAfter # high-frequency models, if voltage is less than preset value, still keep；Reduce to 1# high-frequency models, if electric
Pressure is still kept higher than preset value；
（7）After burst length reaches, according to T interval timef, all modules are closed one by one.
It is an advantage of the invention that：The present invention is provided for the stable operation of 4.6GHz Lower Hybrids on EAST nuclear fusion devices
Reliable technical guarantee, substitutes low frequency module by a number of high-frequency model, solves well and put in EAST devices
Substantially reduced while saving research funding for High voltage output causes the problem of violent disturbance due to grid disturbance during electricity
The development of equipment and debugging cycle, meet klystron for the control requirement of voltage accuracy, so as to finally meet every thing
The requirement of reason experiment.
Description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the fundamental diagram of the present invention.
Fig. 3 is the workflow diagram of feedback control implementation method of the present invention.
Fig. 4 is the voltage output figure under normal grid conditions.
Fig. 5 is to thanks for your hospitality voltage output figure under the conditions of galvanic electricity net (Fig. 5 a are the global figure of output voltage, and Fig. 5 b are output electricity
Pressure partial enlarged drawing）.
Fig. 6 is to improve feedback control speed for the impact figure of disturbance control（Fig. 6 a are that output voltage is global to scheme, Fig. 6 b
For output voltage partial enlarged drawing）.
Fig. 7 is PSM structures high voltage power supply for the inhibition figure of disturbance（Fig. 7 a are that output voltage is global to scheme, and Fig. 7 b are
Output voltage partial enlarged drawing.
Specific embodiment
As shown in figure 1, a kind of PSM high voltage power supplies, include high pressure wire inlet unit, described high pressure wire inlet unit by
Two high-voltage circuit breaker cabinets 1 high voltage connector cabinet 2 of connecting respectively is constituted, and two high voltage connector cabinets 2 connect one respectively
Multiple coil high voltage isolating transformer 3, Multiple coil high voltage isolating transformer 3 connects low frequency rectifier power supply module 4 respectively and high frequency is whole
Stream power module 5, low frequency rectifier power supply module and high-frequency rectification power module are connected to load 6 after all connecting, and described is low
The number of frequency rectifier power supply module is NlfIndividual, " lf " expression " Low Frequency ", module numbering are respectively（1#, 2# ... ...,
Nlf#）, the number of described high-frequency rectification power module is NhfIt is individual, " hf " expression " High Frequency ", module numbering point
It is not（1#, 2# ... ..., Nhf#）, quantity N of low frequency rectifier power supply modulelfWith quantity N of high-frequency rectification power modulehfIt is added
Twice of the sum for separate unit Multiple coil high voltage isolating transformer vice-side winding quantity, quantity N of low frequency rectifier power supply modulelfAnd height
Quantity N of frequency rectifier power supply modulehfConfiguration be typically chosen in 9:1, the configuration can need to adjust accordingly according to system.
As shown in figure 3, a kind of feedback control implementation method of PSM high voltage power supplies,（1）Pre-set output voltage value first
Vref, the open loop rise time interval Tr, open loop fall time interval Tf, closed loop sampled operational cycle Ts；
（2）Determine voltage control nargin VΔ, it is individual module output electricity that the voltage of PSM structures high voltage power supply controls nargin in theory
The half of pressure, i.e. Vs/ 2, in order to avoid the excessive regulation of system causes concussion, suitably increase the numerical value, value V in controls/
10, so as to ensure the stability of system fading margin, then VΔ= Vs/2+ Vs/10= 0.6Vs；
（3）Automatic Program calculates estimated starting module number N, according to X=Vref/ Vs, X is not integer, and X is rounded up
To N；
（4）According to N- Nhf/ 2 draw the low frequency number of modules that plan puts into operation；
（5）After PSM high voltage power supplies receive enabling signal, open from 1# low frequencies module immediately, be spaced TrTime is one by one
It is opened into（N- Nhf/2）# low frequency modules, subsequently enter the negative feedback control stage；
（6）In a closed loop sampling period TsWithin time, system acquisition feedback sample value VfdWith voltage set-point VrefCompare
Compared with being proceeded as follows to high-frequency rectification power module according to comparative result：Increase, keep or reduce, due to high-frequency rectification
Power module limited amount, therefore its range of accommodation has certain restriction, 1# high-frequency models are lower limit, Nhf# high-frequency models are upper
Limit, increases to NhfAfter # high-frequency models, if voltage is less than preset value, still keep；Reduce to 1# high-frequency models, if electric
Pressure is still kept higher than preset value；
（7）After burst length reaches, according to T interval timef, all modules are closed one by one.
Low frequency module is identical with the input-output characteristic of high-frequency model, i.e., with identical input voltage and output voltage,
Difference is only in that its highest switching frequency, and both highest switching frequencies can differ more than 10 times in design, than
Highest switching frequency such as low frequency module is designed as 100Hz, then the highest switching frequency of high-frequency model can be designed as 1kHz very
To higher.Its course of work is as shown in Figure 2.
Low frequency module is used for the foundation of bottom high-pressure, and high-frequency model is used for the quick regulation for realizing system, when system occurs
It is larger or when disturbing faster, suppress the wide fluctuations of output voltage using the rapid adjustability of high-frequency model.It is being
At the system design initial stage, disturbance scope substantially can be determined according to experiment condition, so that it is determined that low frequency module and high-frequency model quantity
Configuration, even if after the completion of system development find cannot meet for disturbance suppression, it is also possible to by high-frequency model replace
The mode of low frequency module improving the regulating power of system, due to low frequency module it is consistent with high-frequency model input-output characteristic, because
This directly can be replaced on hardware, while being equipped with corresponding software upgrading, you can meet the new demand of system, this method convenience,
Flexibly, fast, substantial amounts of time and Financial cost can be saved.
In EAST device 4.6GHz lower hybrid wave high voltage power supplies, above-mentioned new PSM high voltage power supplies and feedback control system
System has been succeeded in developing and has been put into operation, and single set power-supply system adopts 58 low frequency modules and 6 high-frequency models, both inputs
Voltage is 600VAC, and output voltage is 800VDC, and system voltage control accuracy is 400VDC.Solved due to opening well
The restriction for closing frequency cannot further improve feedback control speed so as to improve the problem of voltage output performance.
Fig. 4 gives voltage set-point Vref=25kV, the output voltage waveforms of pulse width T=200mS, can from waveform
To find out, in the case where electrical network is not disturbed, output voltage fluctuation is less, meets the design requirement of ＜ 1%.
Fig. 5 a（The global figure of output voltage）With Fig. 5 b（Output voltage partial enlarged drawing）It is shown, give voltage set-point
Vref=25kV, pulse width T=7S, the output voltage waveforms of closed loop sampled operational cycle T s=5mS are can be seen that from waveform
Due to the disturbance of electrical network, output voltage wave peak-to-peak value is maximum to reach 4000V.
Fig. 6 a（The global figure of output voltage）With Fig. 6 b（Output voltage partial enlarged drawing）It is shown to give voltage set-point Vref
=30kV, pulse width T=7S, the output voltage waveforms of closed loop sampled operational cycle T s=2mS, from the waveforms it can be seen that thanksing for your hospitality
Under the conditions of galvanic electricity net, after improving feedback control speed, voltage peak-to-peak value is reduced to 2000V, and nearly half is reduced compared with Fig. 5.But
It is due to the restriction of module switch frequency, it is impossible to further by improving feedback control speed improving control effect.
In new PSM high voltage power supplies and feedback control system, feedback control speed is on the one hand improve, on the other hand
The switching frequency of part of module is improve to 1kHz, output voltage wave such as Fig. 7 a（The global figure of output voltage）With Fig. 7 b（Output
Voltage partial enlarged drawing）It is shown.Wherein voltage set-point Vref=30kV, pulse width T=7S, closed loop sampled operational cycle
Ts=500uS, from the waveforms it can be seen that under the conditions of galvanic electricity net is thanksed for your hospitality, voltage peak-to-peak value is maximum to reach 1400V, and intensive envelope
Then major limitation is within ± 400V the scopes of voltage set-point.
Claims (2)
1. a kind of PSM high voltage power supplies, it is characterised in that：Include high pressure wire inlet unit, described high pressure wire inlet unit by
Two high-voltage circuit breaker cabinets high voltage connector cabinet of connecting respectively is constituted, two high voltage connector cabinets connect respectively more than one around
Group high voltage isolating transformer, Multiple coil high voltage isolating transformer connect low frequency rectifier power supply module and high-frequency rectification power supply mould respectively
Block, low frequency rectifier power supply module and high-frequency rectification power module are connected to load, described low frequency rectifier power source after all connecting
The number of module is NlfIndividual, the number of described high-frequency rectification power module is NhfIt is individual, quantity N of low frequency rectifier power supply modulelf
With quantity N of high-frequency rectification power modulehfSum for separate unit Multiple coil high voltage isolating transformer vice-side winding quantity two
Times, quantity N of low frequency rectifier power supply modulelfWith quantity N of high-frequency rectification power modulehfConfiguration compare for 9:1.
2. the feedback control implementation method of a kind of PSM high voltage power supplies according to claim 1, it is characterised in that：Tool
Body step is as follows：（1）Pre-set output voltage value V firstref, the open loop rise time interval Tr, open loop fall time interval Tf, closed loop
Sampled operational cycle Ts；
（2）Determine voltage control nargin VΔ, it is individual module output electricity that the voltage of PSM structures high voltage power supply controls nargin in theory
The half of pressure, i.e. Vs/ 2, in order to avoid the excessive regulation of system causes concussion, suitably increase the numerical value, value V in controls/
10, so as to ensure the stability of system fading margin, then VΔ= Vs/2+ Vs/10= 0.6Vs；
（3）Automatic Program calculates estimated starting module number N, according to X=Vref/ Vs, X is not integer, X is rounded up and is obtained
N；
（4）According to N- Nhf/ 2 draw the low frequency number of modules that plan puts into operation；
（5）After PSM high voltage power supplies receive enabling signal, open from 1# low frequencies module immediately, be spaced TrTime opens one by one
Open to（N- Nhf/2）# low frequency modules, subsequently enter the negative feedback control stage；
（6）In a closed loop sampling period TsWithin time, system acquisition feedback sample value VfdWith voltage set-point VrefCompare
Compared with being proceeded as follows to high-frequency rectification power module according to comparative result：Increase, keep or reduce, due to high-frequency rectification
Power module limited amount, therefore its range of accommodation has certain restriction, 1# high-frequency models are lower limit, Nhf# high-frequency models are upper
Limit, increases to NhfAfter # high-frequency models, if voltage is less than preset value, still keep；Reduce to 1# high-frequency models, if electric
Pressure is still kept higher than preset value；
（7）After burst length reaches, according to T interval timef, all modules are closed one by one.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107241025A (en) * | 2017-07-17 | 2017-10-10 | 华中科技大学 | A kind of high voltage power supply |
| CN108063500A (en) * | 2017-12-07 | 2018-05-22 | 华电福新能源股份有限公司古田溪水力发电厂 | A kind of magnetic resonance contactless power supply system and method for monitoring wireless senser on-line |
| CN112532070A (en) * | 2020-11-26 | 2021-03-19 | 核工业西南物理研究院 | Power supply circuit for PSM high-voltage power supply control and application thereof |
| CN112532082A (en) * | 2020-11-26 | 2021-03-19 | 核工业西南物理研究院 | High-frequency converter applied to PSM high-voltage power supply and PSM high-voltage power supply |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105005221A (en) * | 2015-06-04 | 2015-10-28 | 中国科学院等离子体物理研究所 | Feedback control method for PSM high voltage power supply |
-
2016
- 2016-12-16 CN CN201611166333.7A patent/CN106533222B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105005221A (en) * | 2015-06-04 | 2015-10-28 | 中国科学院等离子体物理研究所 | Feedback control method for PSM high voltage power supply |
Non-Patent Citations (2)
| Title |
|---|
| A.PATEL: "Development of 3 MW Dual Output High Voltage Power Supply for ICRH System", 《2016 IEEE INTERNATIONAL POWER MODULATOR AND HIGH VOLTAGE CONFERENCE (IPMHVC)》 * |
| 王磊等: ""EAST 离子回旋共振加热系统调制型高压电源研究"", 《核聚变与等离子体物理》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107241025A (en) * | 2017-07-17 | 2017-10-10 | 华中科技大学 | A kind of high voltage power supply |
| CN108063500A (en) * | 2017-12-07 | 2018-05-22 | 华电福新能源股份有限公司古田溪水力发电厂 | A kind of magnetic resonance contactless power supply system and method for monitoring wireless senser on-line |
| CN108063500B (en) * | 2017-12-07 | 2023-06-02 | 华电福新能源股份有限公司古田溪水力发电厂 | Magnetic resonance non-contact power supply system and method for on-line monitoring wireless sensor |
| CN112532070A (en) * | 2020-11-26 | 2021-03-19 | 核工业西南物理研究院 | Power supply circuit for PSM high-voltage power supply control and application thereof |
| CN112532082A (en) * | 2020-11-26 | 2021-03-19 | 核工业西南物理研究院 | High-frequency converter applied to PSM high-voltage power supply and PSM high-voltage power supply |
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