WO2022267216A1 - 可控硅均热控制方法、装置和计算机可读存储介质 - Google Patents
可控硅均热控制方法、装置和计算机可读存储介质 Download PDFInfo
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- WO2022267216A1 WO2022267216A1 PCT/CN2021/114887 CN2021114887W WO2022267216A1 WO 2022267216 A1 WO2022267216 A1 WO 2022267216A1 CN 2021114887 W CN2021114887 W CN 2021114887W WO 2022267216 A1 WO2022267216 A1 WO 2022267216A1
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- thyristor
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- 238000000034 method Methods 0.000 title claims abstract description 57
- 238000002791 soaking Methods 0.000 title claims abstract description 55
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 51
- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 51
- 239000010703 silicon Substances 0.000 title claims abstract description 51
- 238000010438 heat treatment Methods 0.000 claims abstract description 110
- 238000010304 firing Methods 0.000 claims description 55
- 238000004590 computer program Methods 0.000 claims description 15
- 238000001514 detection method Methods 0.000 claims description 11
- 230000020169 heat generation Effects 0.000 claims description 9
- 230000008859 change Effects 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 6
- 230000007423 decrease Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/1927—Control of temperature characterised by the use of electric means using a plurality of sensors
- G05D23/193—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperaure in different places in thermal relationship with one or more spaces
- G05D23/1932—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperaure in different places in thermal relationship with one or more spaces to control the temperature of a plurality of spaces
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/70—Bipolar devices
- H01L29/74—Thyristor-type devices, e.g. having four-zone regenerative action
Definitions
- the present invention relates to the field of thyristor control, and more specifically, to a method, device and computer-readable storage medium for controlling the soaking heat of thyristor.
- Silicon Controlled Rectifier Silicon Controlled Rectifier
- SCR Silicon Controlled Rectifier
- thyristor Silicon Controlled Rectifier
- AC and DC motor speed control systems power adjustment systems
- servo systems uninterruptible power supply (Uninterruptible Power Supply, UPS) systems.
- UPS Uninterruptible Power Supply
- thyristors are often operated in parallel.
- parallel operation of multiple devices will also involve the parallel operation of thyristors.
- the bypass of each UPS can be SCRs operate in parallel.
- current sharing control can be performed on parallel thyristors.
- the impedance difference of each circuit can be reduced by controlling the cable length of the parallel thyristor circuit to achieve current sharing, or the output current value of the thyristor circuit can be detected and the firing angle of the corresponding thyristor can be adjusted based on this .
- these methods have a common defect, that is, the current sharing of the parallel thyristor circuit is regarded as the ultimate goal of regulation and control, while ignoring the essence of the problems caused by the parallel use of thyristors, and it is impossible to directly solve the problem of parallel thyristors. Average heat problem.
- the present invention provides a simple and reliable thyristor soaking heat control method, device and computer-readable storage medium which can directly solve the heat soaking problem of parallel thyristors.
- a kind of technical solution that the present invention adopts to solve its technical problem is: construct a kind of thyristor soaking control method, comprising:
- the at least two thyristors include the first thyristor and the second thyristor, and the heating parameters include the first heating of the first thyristor parameter and the second heating parameter of the second thyristor;
- step ST3. Repeat step ST1 and step ST2 until the difference between the first heating parameter and the second heating parameter is within the set difference range.
- the first heating parameter and the second heating parameter may respectively include a temperature parameter or a heat parameter.
- the step ST1 may further include:
- the step ST1 may further include:
- the first loop current for the first thyristor, the second loop current for the second thyristor, and the first loop current for the first thyristor are obtained.
- the first thyristor voltage drop for the thyristor and the second thyristor voltage drop for the second thyristor may include one of the following:
- On-line detection obtains the first loop current and the second loop current, uses the segmentally fixed or fixedly set first set voltage drop as the first thyristor voltage drop, and segmentally fixed or fixedly set a second set voltage drop as the second thyristor voltage drop;
- the online detection obtains the first loop current and the second loop current, calculates the voltage drop of the first thyristor by detecting the voltage value at both ends of the first thyristor, and calculates the voltage drop of the first thyristor by detecting the the voltage across two thyristors to calculate the voltage drop across the second thyristor;
- the first loop current, the second loop current, the first thyristor voltage drop, and the second thyristor voltage drop are acquired through direct online detection.
- the step ST1 may further include:
- a temperature sensor is used to detect the second thyristor to obtain a second temperature parameter of the second thyristor as the second heating parameter.
- the step ST2 may further include:
- a firing angle of the first thyristor and/or the second thyristor is adjusted based on the first comparison result and the second comparison result.
- the first set threshold and the second set threshold may be equal, or the first set threshold may be greater than the second set threshold .
- the firing angle of the first thyristor and/or the second thyristor is adjusted based on the first comparison result and the second comparison result may include: increasing the firing angle of the first thyristor and controlling the The firing angle of the second thyristor remains unchanged; and when the first heating parameter is less than the second set threshold and the second heating parameter is greater than the first setting threshold, increase the first The firing angle of the two thyristors is controlled and the firing angle of the first thyristor remains unchanged.
- the first set threshold and the second set threshold may be equal to the average value of the first heating parameter and the second heating parameter.
- the step ST2 may further include:
- a thyristor soaking control device including at least a first thyristor and a second thyristor connected in parallel, and for controlling the first thyristor
- a processor for thermal soaking of the silicon controlled silicon and the second silicon controlled silicon wherein a computer program is stored on the processor, and when the computer program is executed by the processor, the method for controlling heat soaking of the silicon controlled silicon is realized.
- Another technical solution adopted by the present invention to solve its technical problems is to construct a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the above method for controlling the soaking heat of a thyristor is realized. .
- Fig. 1 is the functional block diagram of the first preferred embodiment of the thyristor soaking control method of the present invention
- Fig. 2 is an exemplary circuit schematic diagram of a parallel thyristor circuit applicable to the thyristor soaking control method of the present invention
- Fig. 3 is a schematic diagram of the principle of the thyristor soaking control device of the present invention.
- the present invention relates to a silicon controlled silicon soaking control method, comprising: acquiring heating parameters of at least two silicon controlled silicons connected in parallel, the at least two silicon controlled silicons comprising a first silicon controlled silicon and a second silicon controlled silicon, the The heating parameters include the first heating parameters of the first SCR and the second heating parameters of the second SCR (step ST1); the first heating parameters and the second heating parameters are respectively compared with the set threshold comparing, and adjusting the firing angle of the first thyristor and/or the second thyristor based on the comparison result (step ST2); repeating the steps ST1 and ST2 until the first heating parameter and the The difference of the second heating parameter is within the set difference range.
- the heat soaking control method of the thyristor of the present invention abandons the technical prejudice in the prior art that the heat soaking control of the thyristor must firstly carry out the current equalization control. It is creatively proposed that the firing angle of the thyristors is directly adjusted by comparing the heating parameters without considering the current sharing of the parallel thyristors, so as to directly solve the heat equalization problem of the parallel thyristors from the source.
- Fig. 1 is a functional block diagram of the first preferred embodiment of the thyristor soaking control method of the present invention.
- the heating parameters of at least two thyristors connected in parallel are obtained, the at least two thyristors include the first thyristor and the second thyristor, and the heating parameters include The first heating parameter of the first SCR and the second heating parameter of the second SCR.
- the first heat generation parameter and the second heat generation parameter are temperature parameters, that is, temperature parameters of the first thyristor obtained by using a temperature sensor to detect the first thyristor The first temperature parameter and the second temperature parameter of the second thyristor obtained by detecting the second thyristor by using a temperature sensor.
- the first heating parameter and the second heating parameter are thermal parameters, that is, the heating parameters within a set period range obtained or calculated by any known method in the art A first thermal parameter of the first SCR and a second thermal parameter of the second SCR.
- the first thermal parameter of the first thyristor and the second thermal parameter of the second thyristor can be filtered separately, so as to filter out noise points.
- the first thermal parameter of the first thyristor and the second thermal parameter of the second thyristor may also be used directly.
- the first heating parameter and the second heating parameter are respectively compared with a set threshold, and based on the comparison result, the first thyristor and/or the second thyristor are adjusted. trigger angle.
- the set threshold may be the average value of the first heating parameter and the second heating parameter, or any suitable threshold set by those skilled in the art according to the actual situation, It may also be the first heating parameter or the second heating parameter itself.
- the set threshold may be one or two or more.
- the firing angle of the first thyristor can be adjusted (that is, increased or reduced as required), while maintaining the firing angle of the second thyristor. It is also possible to adjust the firing angle of the second thyristor (that is, to increase or decrease as required), while maintaining the firing angle of the first thyristor, or to adjust the firing angles of the two at the same time, that is, one of them increases, while the other decreases.
- the purpose of this adjustment is to make the first heating parameter and the second heating parameter close to each other, for example, the difference is within a set difference range, preferably the difference is set close to zero.
- the lower of the first heating parameter and the second heating parameter can be used as the set threshold, and the first heating parameter and the second heating parameter can be increased based on the comparison result.
- the firing angle of the thyristor corresponding to the higher of the second heating parameters and the firing angle of the thyristor corresponding to the lower of the first heating parameter and the second heating parameter are reduced.
- the firing angle of silicon does not change.
- the higher one of the first heating parameter and the second heating parameter may also be used as the set threshold for judgment, and the control process is similar.
- step ST3 the steps ST1 and ST2 are repeatedly executed until the difference between the first heating parameter and the second heating parameter is within a set difference range.
- the first heating parameter and the second heating parameter are equal or approximately equal, it is considered that the first thyristor and the second thyristor are both heated.
- the present invention creatively proposes to directly adjust the firing angle of the thyristors by comparing the heating parameters without considering the current sharing of the parallel thyristors, thereby directly solving the heat equalization of the parallel thyristors from the source. question.
- Fig. 2 is an exemplary schematic circuit diagram of a parallel thyristor circuit applicable to the thyristor soaking control method of the present invention. Various preferred embodiments of the present invention will be further described below with reference to FIG. 2 .
- the two triacs S1 and S2 operate in parallel, the corresponding loop impedances of their respective loops are Z1 and Z2, and the first loop current and the second loop current are respectively i1 and i2, the voltage drop across the first thyristor S1 is u1, and the voltage drop across the second thyristor S2 is u2.
- the method for controlling the soaking heat of the thyristor in the preferred embodiment of the present invention includes the following steps (1) to (5).
- the first loop current i1, the second loop current i2, the first thyristor voltage drop u1 and the second thyristor voltage drop u2 can be directly detected online.
- only the first loop current i1 and the second loop current i2 can be acquired through online detection, and the first thyristor voltage drop u1 and the second thyristor voltage drop u2 are not detected. Instead, the first thyristor voltage drop u1 and the second thyristor voltage drop u2 are calculated respectively through the conduction voltage drop curve in the device manual provided by the thyristor manufacturer, that is, according to the first thyristor S1 A conduction voltage drop curve obtains the first thyristor voltage drop u1, and obtains the second thyristor voltage drop u2 according to a second conduction voltage drop curve of the second thyristor S2.
- only the first loop current i1 and the second loop current i2 can be obtained through online detection, and the first thyristor voltage drop u1 and the second thyristor voltage drop u2 are not detected.
- the first set pressure drop that is fixed or fixed in sections is used as the first thyristor voltage drop u1
- the second set pressure drop that is fixed or fixed in sections is taken as the second thyristor voltage drop u2 .
- the first set voltage drop and the second set voltage drop can be selected and set according to the conduction voltage drop curve in the device manual provided by the thyristor manufacturer, or can be set according to circuit requirements. Those skilled in the art can make settings according to any known method.
- first loop current i1 and the second loop current i2 can be acquired through online detection, and the first thyristor voltage drop u1 and the second thyristor voltage drop u2 are not detected. Instead, the first thyristor voltage drop u1 is calculated by detecting the voltage value at both ends of the first thyristor S1, and the voltage drop u1 is calculated by detecting the voltage value at both ends of the second thyristor S2. The second thyristor voltage drop u2.
- first thyristor voltage drop u1 and the second thyristor voltage drop u2 are obtained by measurement, and the first loop current i1 and the second loop current i2 are obtained through calculation.
- T is the power frequency period
- n is a natural number greater than 0.
- the average value Qavrg of the first thermal parameter Q1 and the second thermal parameter Q2 is calculated, and the first thermal parameter Q1 and the second thermal parameter Q2 are compared with the average value Qavrg respectively, if Q1> Qavrg and Q2 ⁇ Qavrg, increase the firing angle of the first thyristor S1 and keep the firing angle of the second thyristor S2 unchanged, otherwise if Q2>Qavrg, Q1 ⁇ Qavrg, increase the firing angle of the second thyristor S2 The firing angle of the first thyristor S1 remains unchanged.
- the average value Qavrg can be replaced by an appropriate fixed threshold.
- a first set threshold QS1 and a second set threshold QS2 are set, and QS1>QS2.
- the first heat parameter Q1 and the second heat parameter Q2 are compared with the first set threshold QS1 and the second set threshold QS2 respectively.
- the first heat parameter Q1 is greater than the first set threshold QS1 and the second heat parameter Q2 is less than the second set threshold QS2
- increasing the firing angle of the first thyristor S1 and The firing angle of the second thyristor S2 is controlled to remain unchanged.
- the second thyristor S2 is increased and control the firing angle of the first thyristor S1 to remain unchanged.
- Q1 ⁇ Q2 can be understood as the difference between the first thermal parameter Q1 and the second thermal parameter Q2 is an acceptable error, which can be set according to actual conditions.
- Q1 ⁇ Q2 may also be set such that the difference between the first thermal parameter Q1 and the second thermal parameter Q2 is within a set range.
- the method for controlling the soaking heat of the thyristor according to the preferred embodiment of the present invention includes the following steps (1) to (3).
- one or more temperature setting thresholds can be directly set, or the average value of the first temperature parameter t1 and the second temperature parameter t2 can be set as the setting threshold .
- the adjustment process of the firing angle of the first thyristor S1 and/or the second thyristor S2 can refer to step (4) in the heat generation parameter embodiment, and no further Said.
- Steps (1)-(2) are repeated until t1 ⁇ t2.
- t1 ⁇ t2 can be understood as the difference between the first temperature parameter t1 and the second temperature parameter t2 is an acceptable error, which can be set according to actual conditions.
- t1 ⁇ t2 may also be set such that the difference between the first temperature parameter t1 and the second temperature parameter t2 is within a set range.
- the heat soaking control method of the thyristor of the present invention abandons the technical prejudice in the prior art that the heat soaking control of the thyristor must firstly carry out the current equalization control. It is creatively proposed that the firing angle of the thyristors is directly adjusted by comparing the heating parameters without considering the current sharing of the parallel thyristors, so as to directly solve the heat equalization problem of the parallel thyristors from the source. And it can use a variety of heating parameters to judge, so it is flexible and adaptable to various application scenarios.
- Fig. 3 is a schematic diagram of the principle of the thyristor soaking control device of the present invention.
- the thyristor soaking control device includes at least a first thyristor S1 and a second thyristor S2 connected in parallel, and is used to control the first thyristor S1 and the second thyristor
- a processor 100 for soaking the thyristor S2 the processor 100 stores a computer program, and when the computer program is executed by the processor 100, the thyristor soaking described in any embodiment in Fig. 1-2 is realized. thermal control method.
- the present invention also relates to a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the silicon controlled silicon soaking control method described in any embodiment in Figs. 1-2 is realized.
- Said computer program contains all the features capable of realizing the method of the present invention, and when it is installed in a computer system, it can realize the method of the present invention.
- a computer program in this document refers to: any expression of a set of instructions that can be written in any programming language, code, or symbol, which enables the system to have information processing capabilities to directly implement specific functions, or to perform the following A specific function is achieved after one or two steps: a) conversion into other languages, codes or symbols; b) reproduction in a different format.
- the present invention can also be realized by hardware, software or a combination of software and hardware.
- the invention can be implemented in a centralized fashion in at least one computer system, or in a decentralized fashion in different parts distributed over several interconnected computer systems. Any computer system or other device that can implement the method of the present invention is applicable.
- the combination of commonly used software and hardware can be a general-purpose computer system with computer programs installed, and the computer system is controlled by installing and executing the program to make it run according to the method of the present invention.
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Abstract
Description
Claims (13)
- 一种可控硅均热控制方法,其特征在于,包括:ST1、获取并联的至少两个可控硅的发热参数,所述至少两个可控硅包括第一可控硅和第二可控硅,所述发热参数包括所述第一可控硅的第一发热参数和所述第二可控硅的第二发热参数;ST2、将所述第一发热参数和所述第二发热参数分别与设定阈值进行比较,并基于比较结果调节所述第一可控硅和/或所述第二可控硅的触发角;ST3、重复执行所述步骤ST1和步骤ST2直至所述第一发热参数和所述第二发热参数的差值位于设定差值范围内。
- 根据权利要求1所述的可控硅均热控制方法,其特征在于,所述第一发热参数和所述第二发热参数分别包括温度参数或热量参数。
- 根据权利要求2所述的可控硅均热控制方法,其特征在于,所述步骤ST1进一步包括:获取针对所述第一可控硅的第一回路电流、针对所述第二可控硅的第二回路电流、针对所述第一可控硅的第一可控硅压降和针对所述第二可控硅的第二可控硅压降;基于所述第一回路电流、所述第一可控硅压降和工频周期计算所述第一可控硅的第一热量参数作为所述第一发热参数;基于所述第二回路电流、所述第二可控硅压降和所述工频周期计算所述第二可控硅的第二热量参数作为所述第二发热参数。
- 根据权利要求3所述的可控硅均热控制方法,其特征在于,所述步骤ST1进一步包括:对所述第一热量参数和所述第二热量参数进行滤波,并且将经滤波的所述第一热量参数和所述第二热量参数分别用作所述第一发热参数和所述第二发热参数。
- 根据权利要求3所述的可控硅均热控制方法,其特征在于,获取针对所述第一可控硅的第一回路电流、针对所述第二可控硅的第二回路电流、针对所述第一可控硅的第一可控硅压降和针对所述第二可控硅的第二可控硅压降 包括以下中之一:在线检测获取所述第一回路电流和所述第二回路电流,根据所述第一可控硅的第一导通压降曲线获取所述第一可控硅压降,并且根据所述第二可控硅的第二导通压降曲线获取所述第二可控硅压降;在线检测获取所述第一回路电流和所述第二回路电流,将分段固定或者固定设置的第一设置压降作为所述第一可控硅压降,并且将分段固定或者固定设置的第二设置压降作为所述第二可控硅压降;在线检测获取所述第一回路电流和所述第二回路电流,通过检测位于所述第一可控硅两端的电压值来计算所述第一可控硅压降,并且通过检测位于所述第二可控硅两端的电压值来计算所述第二可控硅压降;以及直接在线检测获取所述第一回路电流、所述第二回路电流、所述第一可控硅压降和第二可控硅压降。
- 根据权利要求2所述的可控硅均热控制方法,其特征在于,所述步骤ST1进一步包括:采用温度传感器检测所述第一可控硅以获取所述第一可控硅的第一温度参数作为所述第一发热参数;以及采用温度传感器检测所述第二可控硅以获取所述第二可控硅的第二温度参数作为所述第二发热参数。
- 根据权利要求1-6中任意一项所述的可控硅均热控制方法,其特征在于,所述步骤ST2进一步包括:设置第一设定阈值和第二设定阈值作为所述设定阈值;将所述第一发热参数与所述第一设定阈值进行比较以获得第一比较结果,将所述第二发热参数与所述第二设定阈值进行比较以获得第二比较结果;以及基于所述第一比较结果和所述第二比较结果调节所述第一可控硅和/或所述第二可控硅的触发角。
- 根据权利要求7所述的可控硅均热控制方法,其特征在于,所述第一设定阈值和所述第二设定阈值相等,或者所述第一设定阈值大于所述第二设定阈值。
- 根据权利要求8所述的可控硅均热控制方法,其特征在于,基于所述第一比较结果和所述第二比较结果调节所述第一可控硅和/或所述第二可控硅的触发角包括:在所述第一发热参数大于所述第一设定阈值且所述第二发热参数小于所述第二设定阈值时,加大所述第一可控硅的触发角且控制所述第二可控硅的触发角不变;以及在所述第一发热参数小于所述第二设定阈值且所述第二发热参数大于所述第一设定阈值时,加大所述第二可控硅的触发角且控制所述第一可控硅的触发角不变。
- 根据权利要求9所述的可控硅均热控制方法,其特征在于,所述第一设定阈值和所述第二设定阈值中的每一者等于所述第一发热参数和第二发热参数的平均值。
- 根据权利要求1-6中任意一项所述的可控硅均热控制方法,其特征在于,所述步骤ST2进一步包括:将所述第一发热参数和所述第二发热参数中的较低者作为所述设定阈值,并基于比较结果加大所述第一发热参数和所述第二发热参数中的较高者对应的可控硅的触发角和/或缩小所述第一发热参数和所述第二发热参数中的较低者对应的可控硅的触发角。
- 一种可控硅均热控制装置,包括并联的至少第一可控硅和第二可控硅,以及用于控制所述第一可控硅和所述第二可控硅均热的处理器,所述处理器上存储有计算机程序,其特征在于,所述计算机程序被所述处理器执行时实现根据权利要求1-11中任意一项权利要求所述的可控硅均热控制方法。
- 一种计算机可读存储介质,其上存储有计算机程序,所述计算机程序被处理器执行时实现根据权利要求1-11中任意一项权利要求所述的可控硅均热控制方法。
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