WO2020136958A1 - 電力制御装置及び電力制御方法 - Google Patents
電力制御装置及び電力制御方法 Download PDFInfo
- Publication number
- WO2020136958A1 WO2020136958A1 PCT/JP2019/025874 JP2019025874W WO2020136958A1 WO 2020136958 A1 WO2020136958 A1 WO 2020136958A1 JP 2019025874 W JP2019025874 W JP 2019025874W WO 2020136958 A1 WO2020136958 A1 WO 2020136958A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- value
- loads
- power control
- correction
- correction value
- Prior art date
Links
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/0019—Circuit arrangements
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/10—Measuring sum, difference or ratio
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B1/00—Details of electric heating devices
- H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
- H05B1/0227—Applications
- H05B1/023—Industrial applications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
- H05B3/22—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible
Definitions
- the present invention relates to a power control device and a power control method for controlling power supply to each of a plurality of loads in a system for heating or cooling a work by a plurality of loads.
- Patent Document 1 discloses a technique for improving erroneous determination of the amount of cooked rice in a rice cooker due to a change in the amount of heat generated due to variations in heaters and variations in power supply voltage.
- the present invention provides a power control device and a power control system capable of realizing an output operation with a relatively simple configuration in which the influence of fluctuations in load characteristics is reduced in a system for heating or cooling a work by a plurality of loads.
- the purpose is to provide a control method.
- a power control device for controlling power supply to each of the plurality of loads, wherein a combined current value obtained by combining currents flowing through the plurality of loads is measured.
- a correction value which is a value obtained by dividing the sum of the products of the operation output value for each of the loads and the rated current value of each of the loads by the combined current value obtained by the current detector, is calculated.
- the power control device comprises: an output calculation unit that controls power supply to each of the loads based on a corrected operation output value that is a product of an operation output value for each of the loads and the correction value. ..
- the predetermined value is a value obtained by dividing the total value of the products of the operation output value for each of the loads and the rated current value of each of the loads by the combined current value obtained by the current detector.
- the power control device according to configuration 2.
- (Structure 4) The power control device according to configuration 2, wherein the predetermined value is a value obtained by adding 1 to a product of an increase/decrease rate of the correction value and an adjustment coefficient.
- the predetermined value is a value obtained by dividing the sum of the products of the operation output value for each of the loads and the rated current value of each of the loads by the combined current value obtained by the current detector, and multiplying the value by an adjustment coefficient. And a complement of the adjustment coefficient, the power control apparatus according to the configuration 2.
- a power control method for controlling power supply to each of the plurality of loads, wherein a combined current value obtained by combining currents flowing through the plurality of loads is measured. Calculating a correction value that is a value obtained by dividing the sum of the products of the operation output value for each of the loads and the rated current value of each of the loads by the combined current value, and each of the loads. Controlling the power supply to each of the loads based on a corrected operation output value that is the product of the operation output value for the load and the correction value.
- the power control device of the present invention in a system in which a work is heated or cooled by a plurality of loads, it is possible to realize an output operation with a reduced influence of fluctuations in load characteristics with a relatively simple configuration.
- the block diagram which shows the outline of the structure regarding this invention of the heating system of embodiment which concerns on this invention.
- the flowchart which shows the outline of the processing operation of the power control apparatus of embodiment.
- FIG. 1 is a block diagram showing an outline of a configuration related to the present invention of the system of the present embodiment.
- the system of the present embodiment heats a work (not particularly shown) loaded on the plate 21, and has a configuration in which four heaters (load 1 to load 4) are embedded in the plate 21. ing. That is, it is a system in which a work loaded on a plate is heated by a plurality of heaters.
- the plate 21 is made of a material having a high thermal conductivity, and the loads 1 to 4 are thermally connected.
- the system according to the present embodiment includes a plate 21 in which loads 1 to 4 are embedded, a DC power supply P that supplies power to each load, and switching elements SW1 to SW4 that turn on/off the power supply to each load.
- a current detector 31 provided on a power supply path from the DC power source P to each load, and a power control device 100 that controls power supply to each load by ON/OFF control of each switching element are provided.
- Each load is connected in parallel to the DC power supply P, and the current detector 31, which is a current detection resistor, is provided on the power supply path between the DC power supply P and the parallel connection circuit of each load. Therefore, the current detector 31 is a current detector that measures a combined current value obtained by combining the currents flowing through all the loads 1 to 4.
- the power control device 100 receives an operation output value MV from another device such as a temperature controller, and performs on/off control of the switching elements SW1 to SW4 by PWM control based on the operation output value MV.
- an output calculation unit 11 that performs various calculation processes such as PWM control, a current detection unit 12 that obtains a combined current value i obtained by combining the currents flowing from the current detector 31 to the loads 1 to 4, and a temperature controller And the like, and a communication unit 13 that transmits and receives information to and from other devices.
- the loads 1 to 4 will be referred to as “channels”, and the operation output value corresponding to channel 1 will be referred to as MV(1), and the operation output value corresponding to channel ch will be referred to as MV(ch).
- the system of the present embodiment heats the work loaded on the plate 21, but the resistance values of the load 1 to load 4 which are heaters have temperature dependence, and the temperature rises. As the resistance increases. As a result, even if the operation output value MV(ch) is constant at 80%, for example, when the temperature is high, the actually output power is lower than when the temperature is low. This is because the current value decreases as the resistance value increases. That is, when the temperature rises, for example, where it is originally desired to output 80% of the electric power, 80% of the output cannot be actually obtained.
- the current detector 31 calculates the total value of the products of the operation output values MV(ch) and the rated current values I(ch) of the loads.
- a correction value mc which is a value divided by the obtained combined current value i, is calculated (Equation 1), and the power of each channel is calculated based on the correction operation output value that is the product of each operation output value MV(ch) and the correction value mc.
- the supply control is performed, whereby the deviation of the output power caused by the change in the resistance value of each load is corrected so as to approach an appropriate value.
- the total value of the products of the respective operation output values MV(ch) and the respective rated current values I(ch) indicated by the numerator of the above equation 1 is intended to flow to each load by controlling the output. It corresponds to a combined current value, that is, a target combined current value.
- the denominator i of Equation 1 is the actually measured combined current value. That is, the correction value mc is the ratio of the target combined current value and the actually measured combined current value.
- the combined current value i is acquired from the current detector 31 for each control cycle, and the correction value used in the next cycle is calculated and updated.
- the correction value MC n+1 used in the next cycle is based on the basic concept described above, and as shown in Equation 2, each operation output value MV(ch) n and each rated current value I( the value obtained by dividing the composite current value i n obtained by the current detector 31 the sum of the respective products of ch), calculated from the product of the correction value MC n that are used in the current cycle. That is, the correction value MC n + 1 of the next cycle, the correction value MC n of the current cycle is multiplied by the correction value mc newly calculated.
- Equation 2 the distinction of data for each control cycle is represented by the subscripts n and n+1. The same notation will be used thereafter.
- the output calculation unit 11 substitutes 0 into n and then substitutes 1 into the correction value MC n (that is, MC 0 ) in step 201.
- the output calculation unit 11 performs a process of acquiring each operation output value MV(ch) n from the communication unit 13.
- Each operation output value MV(ch) n corresponding to each load is acquired from another device such as a temperature controller.
- step 204 and 205 the output calculation unit 11, to perform the measurement processing of the current to the current detection unit 12 performs processing thereby to obtain a composite current value i n.
- step 206 the output calculation unit 11 performs the calculation based on the above-described equation 2 to calculate the correction value MC n+1 for the next cycle.
- the rated current value I(ch) of each load is preset in the device because it is set at the time of shipment of the device or input by the user.
- n is incremented and then the process returns to step 202 to repeat the above process.
- FIG. 3 and FIG. 4 show comparison experiments of the case where the correction processing function for the operation output value MV using the correction value MC described above is turned off and turned on in the power control device 100 of the present embodiment. The results are shown.
- the experiment is performed in the power control device 100 by setting the operation output value MV(ch) as follows. MV(1): 10% and 90% are changed about every 10 seconds MV(2): 20% fixed MV(3): 50% fixed MV(4): 20% fixed
- FIG. 3 is a graph showing a result when the correction processing function is turned off
- FIG. 4 is a graph showing a result when the correction processing function is turned on.
- the graphs (a) of FIGS. 3 and 4 are graphs showing the measured temperature T1 obtained from the temperature sensor installed near the center of the plate 21 in the experiment.
- the graphs (b) of FIGS. 3 and 4 are graphs showing the change state of the actually calculated correction value MC n .
- the correction processing function is off, as shown in FIG. 3B, it is synonymous with the correction value being always 1 (100%).
- Graphs (c) of FIGS. 3 and 4 are graphs showing combined current values measured by the current detector 31. The graphs of FIGS.
- FIGS. 3 and 4(d) are enlarged views of the graphs of FIGS. 3 and 4(c) near 860 mA (near the maximum current value).
- the graphs (e) of FIGS. 3 and 4 are enlarged views of the vicinity of 480 mA (near the minimum current value) of the graphs of FIGS.
- the current value decreases with the elapsed time. That is, it is shown that the temperature rises with the lapse of time, and the resistance value of each load increases, whereby the current value decreases.
- the correction processing function is turned on (FIGS. 4(c) to (e))
- the power control apparatus 100 of the present embodiment in a system that heats a work by a plurality of loads, even if the load characteristics fluctuate due to temperature fluctuations, this can be prevented from being affected by the output. it can. Further, the function can be realized with a simple configuration. That is, according to the present embodiment, even if a plurality of loads are provided, only one current detector is required, which can be realized with a simple configuration. As the configuration of the current detector 31, the current detector 12, and the like, those originally provided in the device for other purposes such as disconnection detection can be used, and thus this function can be realized at low cost. You can
- the correction is performed only by the ratio of the target combined current value and the actually measured combined current value (correction value mc shown in Formula 1).
- the power control device according to the present embodiment is configured to change the correction intensity by using the adjustment coefficient together with the correction value mc. Since the configuration of the power control device is the same as that of the power control device 100 of the first embodiment, the description thereof is omitted here.
- the power control device performs the process of calculating and updating the correction value MC by the following Expression 3 using the adjustment coefficient ⁇ . That is, in the process of step 206 of FIG. 2, the correction value MC n+1 is calculated based on the equation 3 instead of the equation 2 .
- the adjustment coefficient ⁇ takes a value between 0 and 1 and is set in the device by being set at the time of shipment of the device or input by the user.
- the correction value MC n+1 in Expression 2 of the first embodiment is 1.111 times the correction value MC n .
- the correction strength can be arbitrarily set by the increase/decrease rate of the correction value (0.111 increase in the above example) and the adjustment coefficient ⁇ having a value between 0 and 1. This is useful when it is desired to suppress the amount of correction for each control cycle.
- ⁇ is 1, the same result as in the first embodiment is obtained, and when ⁇ is 0, the correction operation is not performed.
- Formula 3 shows that in the process of setting the product of the correction value MC n and the “predetermined value” as the correction value MC n+1 in the next cycle, the “predetermined value” is “the increase/decrease rate of the correction value. Is a value obtained by adding 1 to the product of the adjustment coefficient.
- Equation 4 is obtained by modifying Equation 3.
- Equation 4 (that is, Equation 3) indicates that in the process of setting the product of the correction value MC n and the “predetermined value” as the correction value MC n+1 in the next cycle, the “predetermined value” is “each operation.
- the expression 3 (and the modified expression 4) is taken as an example here, the present invention is not limited to this, and “the adjustment coefficient by which the correction value mc can be changed is used, What is necessary is just to update the correction value MC”.
- the load is a heater and basically the temperature control is performed as an example.
- the cooling control may be performed using a cooling element.
- a semiconductor element such as a Peltier element
- the current value increases as the temperature rises, but the concept described in each embodiment can be applied as it is.
- the power source is a DC power source as an example, but the present invention can be applied to an AC power source.
- the correction value updating process is performed every control cycle of the power supply control, but the present invention is not limited to this, and the correction value updating process is performed at an arbitrary timing. It may be one. However, when the temperature change of the load is fast, it is preferable to shorten the interval between update cycles or update timings. Further, the correction value may not be updated under a predetermined condition. As an example thereof, when the calculated variation amount of the correction value (difference between MC n+1 and MC n ) or variation amount of the combined current value (for example, difference between i n and i n ⁇ 1 ) exceeds a predetermined value, The correction value may not be updated.
- the application range of the correction value may be limited (for example, 0.8 to 1.2).
- these moving average values are calculated. May be calculated and used as the latest correction value MC n+1 .
- the moving average value may be replaced with the latest correction value MC n+1 , or the correction value MC n+1 itself may be left as it is and the moving average value multiplied by the operation output value may be used to correct the power to the load. Supply control may be performed.
- a weighted average or the like in which the most recent cycle is weighted may be used, and the average value may be calculated by various calculation methods.
- the rapid temperature change is unlikely to occur, and therefore the correction value does not change rapidly under normal processing. By these processes, it is possible to suppress the sensitive reaction of the correction value to the influence of noise or the like.
- the initial value is used as the correction value or the correction processing function is automatically turned off. You may do so.
- the initial value of the correction value is not 1 (100%), but may be any value such as 0.8 or 1.2, or a set value that can be input by the user.
- the rated current value I(ch) of each load is preset in the device, but the rated resistance value R(ch) of each load and the rated voltage value V of the power supply are Is set in the device at the time of shipment from the factory or input by the user, and the rated current value I(ch) is calculated by dividing the rated voltage value V by the rated resistance value R(ch).
- the rated current value I(ch) and the rated resistance value R(ch) are shared by all channels (for example, the rated current value I and the rated resistance value R). R) may be used.
- the power control device has been described as including the output calculation unit 11, the current detection unit 12, and the communication unit 13, but each functional unit is limited to be individually configured in hardware. Instead, for example, all the functions may be implemented as software on one device such as a microcomputer. On the contrary, any or all of the functional units may be implemented by hardware (by a dedicated circuit or the like), and in each embodiment, the process is described as a process executed by software on the output calculation unit 11. Some or all of the functions may be implemented by hardware.
- the correction value MC n + 1 cycle n + 1 is the next cycle
- the present invention is not limited to this.
- the correction value MC n used in cycle n may be calculated based on the correction value MC n ⁇ 1 in the previous cycle and the correction value mc (and the adjustment coefficient ⁇ ) newly calculated in cycle n. , The deviation before and after the cycle does not make a difference in concept.
- the case where the correction value of the latest cycle is used in the calculation of the correction value of the corresponding cycle is taken as an example, but the present invention is not limited to this.
- the correction value of the corresponding cycle is calculated based on the correction value MC n ⁇ 2 two cycles before and the correction value mc (and the adjustment coefficient ⁇ ) newly calculated in the cycle n , a sufficient effect is obtained.
- the “corresponding cycle” refers to the cycle in which the updated correction value is used.
- every predetermined cycle (the cycle interval is "Arbitrary), the correction value of the cycle (how many cycles before) the corresponding cycle (the cycle in which the updated correction value is used) and the "predetermined value (the value described in the above embodiment)"
- the correction value is updated by the product of
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Electromagnetism (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Control Of Electrical Variables (AREA)
- Control Of Resistance Heating (AREA)
- Control Of Voltage And Current In General (AREA)
Abstract
Description
これに関する技術として、炊飯器において、ヒータのばらつきや電源電圧のばらつきによる発熱量の変化によって、炊飯量の誤判定を改善する技術が、特許文献1によって開示されている。
このようなシステムにおいて、特許文献1のような従来技術によって負荷特性の変動への対応をしようとした場合、各負荷の電流値を測定するために電流検出器を複数設ける必要があり、また、制御処理としても複雑となるものであった。
ワークを複数の負荷によって加熱または冷却するシステムにおいて、前記複数の負荷のそれぞれに対する電力供給の制御を行う電力制御装置であって、前記複数の負荷に流れる電流が合成された合成電流値を測定する電流検出器と、前記負荷のそれぞれに対する操作出力値と前記負荷のそれぞれの定格電流値のそれぞれの積の合計値を前記電流検出器によって得られる合成電流値で除算した値である補正値を算出し、前記負荷のそれぞれに対する操作出力値と前記補正値の積である補正操作出力値に基づいて前記負荷のそれぞれに対する電力供給制御を行う出力演算部と、を備えることを特徴とする電力制御装置。
所定サイクル毎に、該当サイクルより前のサイクルの前記補正値と、所定の値と、の積によって、前記補正値を更新する更新処理を行うことを特徴とする構成1に記載の電力制御装置。
前記所定の値が、前記負荷のそれぞれに対する操作出力値と前記負荷のそれぞれの定格電流値のそれぞれの積の合計値を前記電流検出器によって得られる合成電流値で除算した値であることを特徴とする構成2に記載の電力制御装置。
前記所定の値が、前記補正値の増加減分の割合と調整係数との積に、1を加算した値であることを特徴とする構成2に記載の電力制御装置。
前記所定の値が、前記負荷のそれぞれに対する操作出力値と前記負荷のそれぞれの定格電流値のそれぞれの積の合計値を前記電流検出器によって得られる合成電流値で除算した値に調整係数を乗じた値と、前記調整係数に対する補数と、の和であることを特徴とする構成2に記載の電力制御装置。
前記合成電流値の変動量が、所定値を超える場合には、前記補正値の更新を行わないことを特徴とする構成2から5の何れかに記載の電力制御装置。
前記更新処理によって算出された補正値が、所定範囲内に無い場合には、前記補正値の更新を行わない若しくは前記補正値にリミットを設けることを特徴とする構成2から6の何れかに記載の電力制御装置。
過去のサイクルの複数の前記補正値を使用して移動平均を算出し、当該算出された値を該当サイクルの補正値とすることを特徴とする構成2から7の何れかに記載の電力制御装置。
ワークを複数の負荷によって加熱または冷却するシステムにおいて、前記複数の負荷のそれぞれに対する電力供給の制御を行う電力制御方法であって、前記複数の負荷に流れる電流が合成された合成電流値を測定するステップと、前記負荷のそれぞれに対する操作出力値と前記負荷のそれぞれの定格電流値のそれぞれの積の合計値を前記合成電流値で除算した値である補正値を算出するステップと、前記負荷のそれぞれに対する操作出力値と前記補正値の積である補正操作出力値に基づいて前記負荷のそれぞれに対する電力供給制御を行うステップと、を備えることを特徴とする電力制御方法。
図1は、本実施形態のシステムの本発明に関する構成の概略を示すブロック図である。
本実施形態のシステムは、プレート21に積載されるワーク(特に図示せず)の加熱を行うものであり、プレート21に対して4つのヒータ(負荷1~負荷4)が埋め込まれた構成となっている。即ち、プレートに積載されるワークを複数のヒータによって加熱するシステムである。プレート21は熱伝導率の高い素材で形成されており、負荷1~負荷4は熱的に接続されている。
各負荷は直流電源Pに対して並列に接続されており、電流検出用抵抗器である電流検出器31は、直流電源Pと各負荷の並列接続回路との間の電力供給路上に設けられる。従って、電流検出器31は、全ての負荷1~負荷4に流れる電流が合成された合成電流値を測定する電流検出器である。
以下、負荷1~負荷4の別を“チャンネル”と称し、チャンネル1に対応する操作出力値をMV(1)、チャンネルchに対応する操作出力値をMV(ch)等と表記する。
このような問題に対し、本実施形態の電力制御装置100では、各操作出力値MV(ch)と各負荷の定格電流値I(ch)のそれぞれの積の合計値を、電流検出器31によって得られる合成電流値iで除算した値である補正値mcを算出し(数1)、各操作出力値MV(ch)と補正値mcの積である補正操作出力値に基づいて各チャンネルの電力供給制御を行うことを基本とし、これにより、各負荷の抵抗値の変化によって生じる出力電力のずれが、適正な値に近づくように補正される。
これに対して、数1の分母iは実際に測定された合成電流値である。
即ち、補正値mcは、目標とする合成電流値と、実際に測定された合成電流値の比である。
ステップ203では、出力演算部11によって、各操作出力値MV(ch)nと補正値MCnの積(補正操作出力値)に比例するPWM信号を算出し、当該PWM信号によって各スイッチング素子SW(ch)のオン/オフ制御を行う。サイクルn=0の場合には、MC0=1であるため、通信部13から得られた各操作出力値の初期値MV(ch)0がそのまま使用される結果となる。
続くステップ206では、出力演算部11において、上述した数2に基づく演算を行い、次サイクルの補正値MCn+1を算出する。なお、各負荷の定格電流値I(ch)は、装置の出荷時に設定されている若しくはユーザによって入力されている等により、装置に予め設定されているものである。
当該実験は、電力制御装置100において、操作出力値MV(ch)を以下のように設定して行ったものである。
MV(1):10%と90%を約10秒ごとに変更
MV(2):20%固定
MV(3):50%固定
MV(4):20%固定
図3、4の(a)のグラフは、当該実験においてプレート21の中央付近に設置した温度センサから得られた測定温度T1を示したグラフである。
図3、4の(b)のグラフは、実際に算出された補正値MCnの変化状態を示すグラフである。補正処理機能オフの場合は、図3(b)に示されるように、補正値が常に1(100%)であるのと同義である。
図3、4の(c)のグラフは、電流検出器31によって測定された合成電流値を示すグラフである。
図3、4の(d)のグラフは、図3、4の(c)のグラフの860mA付近(電流値の最大値付近)を拡大した図である。
図3、4の(e)のグラフは、図3、4の(c)のグラフの480mA付近(電流値の最小値付近)を拡大した図である。
図3、図4から理解されるように、補正処理機能をオフにした場合(図3(c)~(e))には、経過時間と共に電流値が低下している。即ち、時間経過にともなって温度が上昇し、各負荷の抵抗値が大きくなることによって電流値が低下していることが示されている。
これに対し、補正処理機能をオンにした場合(図4(c)~(e))には、補正処理機能がオフである場合に見られるような電流値の落ち込みは無く、従って、出力しようと意図した通りの出力が維持されていることが示されている。
実施形態2として、実施形態1のシステムにおける補正強度を変更可能とする方法について説明する。
基本的な概念は実施形態1と同様であるため、重複する説明は省略し、主に実施形態1と異なる点について以下説明する。
制御サイクルごとの補正量を抑制したい場合等において有用である。
なお、αが1の場合は実施形態1と同様の結果となり、αが0の場合には補正動作は行われない。
数3は、補正値MCnと“所定の値”との積を、次のサイクルの補正値MCn+1とする処理において、“所定の値”が「前記補正値の増加減分の割合と調整係数との積に1を加算した値」であるものである。
よって、数4(即ち数3)は、補正値MCnと“所定の値”との積を、次のサイクルの補正値MCn+1とする処理において、“所定の値”が「各操作出力値MV(ch)と各負荷の定格電流値I(ch)のそれぞれの積の合計値を、電流検出器31によって得られる合成電流値iで除算した値に調整係数αを乗じた値と、調整係数αに対する補数との和」である
なお、ペルチェ素子等の半導体素子においては、温度上昇に伴って電流値が増加する特性を示すが、概念としては各実施形態で説明したものをそのまま適用することができる。
また、各実施形態では、電源が直流電源であるものを例としているが、交流電源に対しても本発明を適用することができる。
また、所定の条件下においては補正値の更新を行わないようなものとしてもよい。その一例として、算出された補正値の変動量(MCn+1とMCnの差)や合成電流値の変動量(例えば、inとin-1の差)が所定値を超える場合には、補正値の更新を行わないようにしてもよい。
また、負荷の温度特性を考慮したうえで、補正値の適用範囲に制限(例えば、0.8~1.2)を設けても良い。
また、必要以上に補正値が変動しないように、算出された複数のサイクルの補正値MC(例えば直近の5サイクル分の補正値MCn-3~MCn+1)を用いて、これらの移動平均値を算出し、これを最新の補正値MCn+1として使用するものであってもよい。この際に、移動平均値を最新の補正値MCn+1として置き換えるようにしてもよいし、補正値MCn+1自体はそのままとし、移動平均値を操作出力値にかけた補正操作出力値によって負荷への電力供給制御を行うようにしてもよい。
なお、単純な移動平均ではなく、直近のサイクル程重みづけがされるような加重平均等としてもよく、各種の算出方法によって平均値を算出してよい。
各実施形態のシステムでは、プレートまたはワークの温度変化が比較的緩やかなものであるため、急激な温度変化は生じ難く、従って正常な処理下においては補正値が急激に変化することはない。これらの処理により、ノイズなどの影響に対して、補正値の過敏な反応を抑制することができる。
また、実施形態では、該当サイクルの補正値の算出において、直近のサイクルの補正値を利用するものを例としているが、本発明はこれに限らない。例えば2サイクル前の補正値MCn-2とサイクルnで新たに算出した補正値mc(および調整係数α)に基づいて該当サイクルの補正値を算出するもの等であっても、十分な効果を得ることができる。
なお、“該当サイクル”とは、更新された補正値が使用されるサイクルを示すものである。即ち、「所定サイクル毎に、該当サイクルより前のサイクルの前記補正値と、所定の値と、の積によって、前記補正値を更新する更新処理を行う」とは、所定サイクル毎(サイクル間隔は任意)に、該当サイクル(更新された補正値が使用されるサイクル)よりも前のサイクル(何サイクル前かも任意)の補正値と、“所定の値(上記実施例で説明した値等)”の積によって、補正値を更新するものである。
11...出力演算部
12...電流検出部
13...通信部
21...プレート
31...電流検出器
1~4...負荷(ヒータ)
Claims (6)
- ワークを複数の負荷によって加熱または冷却するシステムにおいて、前記複数の負荷のそれぞれに対する電力供給の制御を行う電力制御装置であって、
前記複数の負荷に流れる電流が合成された合成電流値を測定する電流検出器と、
前記負荷のそれぞれに対する操作出力値と前記負荷のそれぞれの定格電流値のそれぞれの積の合計値を前記電流検出器によって得られる合成電流値で除算した値である補正値を算出し、前記負荷のそれぞれに対する操作出力値と前記補正値の積である補正操作出力値に基づいて前記負荷のそれぞれに対する電力供給制御を行う出力演算部と、
を備えることを特徴とする電力制御装置。 - 所定サイクル毎に、該当サイクルより前のサイクルの前記補正値と、所定の値と、の積によって、前記補正値を更新する更新処理を行うことを特徴とする請求項1に記載の電力制御装置。
- 前記所定の値が、前記負荷のそれぞれに対する操作出力値と前記負荷のそれぞれの定格電流値のそれぞれの積の合計値を前記電流検出器によって得られる合成電流値で除算した値であることを特徴とする請求項2に記載の電力制御装置。
- 前記所定の値が、前記補正値の増加減分の割合と調整係数との積に、1を加算した値であることを特徴とする請求項2に記載の電力制御装置。
- 前記所定の値が、前記負荷のそれぞれに対する操作出力値と前記負荷のそれぞれの定格電流値のそれぞれの積の合計値を前記電流検出器によって得られる合成電流値で除算した値に調整係数を乗じた値と、前記調整係数に対する補数と、の和であることを特徴とする請求項2に記載の電力制御装置。
- ワークを複数の負荷によって加熱または冷却するシステムにおいて、前記複数の負荷のそれぞれに対する電力供給の制御を行う電力制御方法であって、
前記複数の負荷に流れる電流が合成された合成電流値を測定するステップと、
前記負荷のそれぞれに対する操作出力値と前記負荷のそれぞれの定格電流値のそれぞれの積の合計値を前記合成電流値で除算した値である補正値を算出するステップと、
前記負荷のそれぞれに対する操作出力値と前記補正値の積である補正操作出力値に基づいて前記負荷のそれぞれに対する電力供給制御を行うステップと、
を備えることを特徴とする電力制御方法。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201980083601.4A CN113243140B (zh) | 2018-12-25 | 2019-06-28 | 电力控制装置和电力控制方法 |
JP2020562324A JP7109728B2 (ja) | 2018-12-25 | 2019-06-28 | 電力制御装置及び電力制御方法 |
KR1020217018745A KR102521337B1 (ko) | 2018-12-25 | 2019-06-28 | 전력 제어 장치 및 전력 제어 방법 |
US17/416,564 US12004271B2 (en) | 2018-12-25 | 2019-06-28 | Power control device and power control method |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2018/047469 WO2020136702A1 (ja) | 2018-12-25 | 2018-12-25 | 電力制御装置及び電力制御方法 |
JPPCT/JP2018/047469 | 2018-12-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2020136958A1 true WO2020136958A1 (ja) | 2020-07-02 |
Family
ID=71125703
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2018/047469 WO2020136702A1 (ja) | 2018-12-25 | 2018-12-25 | 電力制御装置及び電力制御方法 |
PCT/JP2019/025874 WO2020136958A1 (ja) | 2018-12-25 | 2019-06-28 | 電力制御装置及び電力制御方法 |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2018/047469 WO2020136702A1 (ja) | 2018-12-25 | 2018-12-25 | 電力制御装置及び電力制御方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US12004271B2 (ja) |
JP (1) | JP7109728B2 (ja) |
KR (1) | KR102521337B1 (ja) |
CN (1) | CN113243140B (ja) |
WO (2) | WO2020136702A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2024034577A1 (ja) * | 2022-08-12 | 2024-02-15 | 日本発條株式会社 | 異常判定装置、異常判定方法及び異常判定プログラム |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0478796U (ja) * | 1990-11-21 | 1992-07-09 | ||
JP2003178855A (ja) * | 2001-12-11 | 2003-06-27 | Rkc Instrument Inc | ヒータの制御装置 |
WO2017109954A1 (ja) * | 2015-12-25 | 2017-06-29 | 理化工業株式会社 | 負荷制御装置、負荷制御装置の電流計測方法 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3720683A1 (de) * | 1987-06-23 | 1989-01-05 | Bosch Gmbh Robert | Vorrichtung und verfahren zur ansteuerung und kontrolle von elektrischen verbrauchern, insbesondere gluehkerzen |
US5208485A (en) * | 1991-10-24 | 1993-05-04 | The Boeing Company | Apparatus for controlling current through a plurality of resistive loads |
DE4218782A1 (de) * | 1992-06-06 | 1993-01-14 | Zahnradfabrik Friedrichshafen | Verfahren zum ansteuern von elektrischen, stromgesteuerten stellgliedern |
JPH0886241A (ja) * | 1994-09-16 | 1996-04-02 | Hitachi Ltd | センサ及びアクチュエータの駆動装置 |
FR2919456B1 (fr) * | 2007-07-26 | 2009-11-27 | Inergy Automotive Systems Res | Methode pour le chauffage d'au moins un composant d'un systeme scr a l'aide d'elements chauffants resistifs. |
US8710406B2 (en) * | 2008-09-19 | 2014-04-29 | Conair Corporation | Safety device and method for electric heating appliances |
JP5424048B2 (ja) * | 2010-03-24 | 2014-02-26 | 理化工業株式会社 | マルチチャンネル電力制御器 |
DK2372861T3 (da) * | 2010-04-01 | 2013-03-25 | Racktivity Nv | Styringsenhed til datacenter med dynamisk belastningsudligning |
JP6168043B2 (ja) * | 2012-02-16 | 2017-07-26 | 日本電気株式会社 | 調整装置、組電池装置および調整方法 |
JP2013255542A (ja) | 2012-06-11 | 2013-12-26 | Panasonic Corp | 炊飯器 |
JP6227090B1 (ja) * | 2016-10-27 | 2017-11-08 | 三菱電機株式会社 | 給電制御装置及び給電制御装置に対する制御特性の補正データ生成方法 |
DE102019107135B3 (de) * | 2019-03-20 | 2020-06-10 | Elmos Semiconductor Aktiengesellschaft | Vorrichtung und Verfahren zur Fehlerdiagnose und/oder EME-Optimierung mittels Flankendetektion im Strommesspfad |
US11482853B2 (en) * | 2020-08-17 | 2022-10-25 | Infineon Technologies Austria Ag | Power delivery control and over current protection |
-
2018
- 2018-12-25 WO PCT/JP2018/047469 patent/WO2020136702A1/ja active Application Filing
-
2019
- 2019-06-28 JP JP2020562324A patent/JP7109728B2/ja active Active
- 2019-06-28 CN CN201980083601.4A patent/CN113243140B/zh active Active
- 2019-06-28 WO PCT/JP2019/025874 patent/WO2020136958A1/ja active Application Filing
- 2019-06-28 KR KR1020217018745A patent/KR102521337B1/ko active IP Right Grant
- 2019-06-28 US US17/416,564 patent/US12004271B2/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0478796U (ja) * | 1990-11-21 | 1992-07-09 | ||
JP2003178855A (ja) * | 2001-12-11 | 2003-06-27 | Rkc Instrument Inc | ヒータの制御装置 |
WO2017109954A1 (ja) * | 2015-12-25 | 2017-06-29 | 理化工業株式会社 | 負荷制御装置、負荷制御装置の電流計測方法 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2024034577A1 (ja) * | 2022-08-12 | 2024-02-15 | 日本発條株式会社 | 異常判定装置、異常判定方法及び異常判定プログラム |
Also Published As
Publication number | Publication date |
---|---|
KR20210092799A (ko) | 2021-07-26 |
KR102521337B1 (ko) | 2023-04-13 |
CN113243140B (zh) | 2023-04-04 |
US20220086958A1 (en) | 2022-03-17 |
JP7109728B2 (ja) | 2022-08-01 |
WO2020136702A1 (ja) | 2020-07-02 |
US12004271B2 (en) | 2024-06-04 |
CN113243140A (zh) | 2021-08-10 |
JPWO2020136958A1 (ja) | 2021-10-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20210116481A1 (en) | System and method for controlling power to a heater | |
JP2019524047A (ja) | 熱システムのための電力コンバータ | |
EP2343952B1 (en) | Induction heating cooker | |
US20230164885A1 (en) | Control system for controlling a heater | |
WO2019112652A1 (en) | System and method for controlling power to a heater | |
WO2020136958A1 (ja) | 電力制御装置及び電力制御方法 | |
US20200329533A1 (en) | Thermal system with a temperature limiting device | |
US20220050485A1 (en) | Method and system for providing variable ramp-down control for an electric heater | |
US20210368584A1 (en) | Passive and active calibration methods for a resistive heater | |
CN112672664B (zh) | 控制护发器具的方法 | |
US10823750B2 (en) | Wind speed measuring device and airflow measuring device | |
JP2018112502A (ja) | 熱電対による温度測定装置 | |
JP2017106740A (ja) | 異常温度検出回路 | |
JP2018148552A (ja) | 半導体スイッチング装置のゲート電流を制御する回路 | |
US9488153B2 (en) | Method for operating a glow plug, and glow plug control device | |
JP6624303B2 (ja) | 温度測定器、温度調節計及び短絡判別プログラム | |
US10887947B2 (en) | Transistor implemented heat source | |
US20240163972A1 (en) | Control of electronic heaters | |
WO2021234988A1 (ja) | 熱伝導度検出器 | |
KR20240090227A (ko) | 전기 히터의 전기적 특성을 계산하는 방법 및 시스템 | |
JPH11168872A (ja) | モータ駆動装置、位置決めテーブル装置および半導体露光装置 | |
JPH02145315A (ja) | プラスチックシートのプロフイル制御方法 | |
KR20030075241A (ko) | 센서가 필요없는 히터용 온도제어시스템 | |
JP2004108920A (ja) | 電子部品の製造方法およびバーンイン装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 19902079 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2020562324 Country of ref document: JP Kind code of ref document: A |
|
ENP | Entry into the national phase |
Ref document number: 20217018745 Country of ref document: KR Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 19902079 Country of ref document: EP Kind code of ref document: A1 |