JP2001291576A - Output control device used for induction heating device - Google Patents
Output control device used for induction heating deviceInfo
- Publication number
- JP2001291576A JP2001291576A JP2000105859A JP2000105859A JP2001291576A JP 2001291576 A JP2001291576 A JP 2001291576A JP 2000105859 A JP2000105859 A JP 2000105859A JP 2000105859 A JP2000105859 A JP 2000105859A JP 2001291576 A JP2001291576 A JP 2001291576A
- Authority
- JP
- Japan
- Prior art keywords
- induction heating
- temperature
- heating device
- line speed
- heated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- General Induction Heating (AREA)
- Control Of Heat Treatment Processes (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は誘導加熱装置に用い
られる出力制御装置に関し、特に、フィードフォワード
を用いた制御手法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an output control device used for an induction heating device, and more particularly, to a control method using feedforward.
【０００２】[0002]
【従来の技術】一般に、誘導加熱装置において、帯鋼板
（ストリップ）を加熱する際には、所謂縦軸磁束方式
（ＬＦＸ）及び横軸磁束方式（ＶＦＸ）が用いられてい
る。ＬＦＸ及びＶＦＸは住友重機械工業株式会社の登録
商標である。このような誘導加熱装置では、帯鋼板を加
熱する際、誘導加熱装置の出側における帯鋼板の温度が
予め定められた温度となるように制御している。2. Description of the Related Art In general, in an induction heating apparatus, a so-called vertical magnetic flux system (LFX) and a horizontal magnetic flux system (VFX) are used to heat a steel strip (strip). LFX and VFX are registered trademarks of Sumitomo Heavy Industries, Ltd. In such an induction heating device, when heating the steel strip, the temperature of the steel strip on the outlet side of the induction heating device is controlled to be a predetermined temperature.
【０００３】従来の誘導加熱装置では、所定方向に延び
る誘導加熱コイル中に帯鋼板を通過させて、誘導加熱に
よって帯鋼板を加熱しており、帯鋼板の温度を制御する
際には、誘導加熱コイルの出側に、例えば、放射温度計
等の温度検出器等を配置して、帯鋼板の温度を検出し
て、この検出温度に基づいて誘導加熱コイルに印加する
電流を制御するようにしている。つまり、検出温度に基
づいて誘導加熱装置電源の出力をフィードバック制御し
ている。[0003] In a conventional induction heating apparatus, a steel strip is passed through an induction heating coil extending in a predetermined direction to heat the steel strip by induction heating. On the outlet side of the coil, for example, a temperature detector such as a radiation thermometer is disposed, the temperature of the steel strip is detected, and the current applied to the induction heating coil is controlled based on the detected temperature. I have. That is, the output of the induction heating device power supply is feedback-controlled based on the detected temperature.
【０００４】[0004]
【発明が解決しようとする課題】ところで、従来の誘導
加熱装置においては、前述のようにフィードバック制御
を行っている関係上、帯鋼板の移動速度（ライン速度）
が変化すると、ライン速度の変化に迅速に追従できず、
帯鋼板を素早く所望の出側温度に制御することが難し
く、しかもオーバーシュートが発生してしまうという問
題点がある。However, in the conventional induction heating apparatus, since the feedback control is performed as described above, the moving speed (line speed) of the steel strip is required.
Can not quickly follow the change in line speed,
It is difficult to quickly control the strip steel sheet to a desired outlet temperature, and there is a problem that overshoot occurs.
【０００５】本発明の目的は、ライン速度が変化しても
出側温度を精度よく所定の温度に制御することができる
出力制御装置を提供することにある。It is an object of the present invention to provide an output control device capable of accurately controlling the outlet temperature to a predetermined temperature even when the line speed changes.
【０００６】[0006]
【課題を解決するための手段】本発明によれば、被加熱
材の搬送ラインに沿って配置された誘導加熱コイルを用
いて前記被加熱材を誘導加熱する誘導加熱装置に用いら
れ、予め設定された目標加熱温度、前記搬送ラインのラ
イン速度、及び前記被加熱材加熱前の雰囲気温度に基づ
いて前記被加熱材からの放熱量を求める第１の手段と、
前記放熱量を考慮して前記ライン速度に基づいて前記誘
導加熱コイルに加える電力をフィードフォワード制御す
る第２の手段とを有することを特徴とする誘導加熱装置
に用いられる出力制御装置が得られる。According to the present invention, there is provided an induction heating apparatus for induction heating an object to be heated by using an induction heating coil disposed along a conveying line of the object to be heated. First means for determining the amount of heat radiation from the heated material based on the target heating temperature, the line speed of the transport line, and the ambient temperature before the heated material is heated,
Second means for feed-forward controlling the electric power applied to the induction heating coil based on the line speed in consideration of the heat release amount, thereby obtaining an output control device used in the induction heating device.
【０００７】[0007]
【発明の実施の形態】以下本発明について図面を参照し
て説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings.
【０００８】図１を参照して、図示の誘導加熱装置は被
加熱材（例えば、帯鋼板（ストリップ））１１の搬送ラ
インに沿って延びる誘導加熱コイル１２を備えており、
搬送ラインに沿って移動する帯鋼板１１は、後述するよ
うにして、誘導加熱コイル１２によって誘導加熱され
る。Referring to FIG. 1, the illustrated induction heating apparatus includes an induction heating coil 12 extending along a conveying line of a material to be heated (for example, a strip (strip)) 11.
The strip steel sheet 11 moving along the transport line is induction-heated by the induction heating coil 12 as described later.
【０００９】誘導加熱コイル１２には電源装置１３が接
続されており、電源装置１３から誘導加熱コイル１２に
電力（電流）が供給される。電源装置１３は誘導加熱装
置制御盤１４によって制御され、誘導加熱装置制御盤１
４にはライン制御盤１５及び誘導加熱装置操作器１６が
接続されている。さらに、誘導加熱装置制御盤１４に温
度計１７が接続されており、この温度計１７は誘導加熱
コイル１２の入側近傍に配置されている。A power supply 13 is connected to the induction heating coil 12, and power (current) is supplied from the power supply 13 to the induction heating coil 12. The power supply device 13 is controlled by the induction heating device control panel 14 and controls the induction heating device control panel 1.
4 is connected to a line control panel 15 and an induction heater controller 16. Further, a thermometer 17 is connected to the induction heating device control panel 14, and the thermometer 17 is arranged near the inlet side of the induction heating coil 12.
【００１０】誘導加熱の際には、帯鋼板１１の走行状態
（ライン速度等）はライン制御盤１５によって制御され
ており、ライン制御盤１５から誘導制御装置制御盤１４
に現時点のライン速度（Ｖ）が与えられる。さらに、誘
導加熱装置操作器１６からは後述する種々のパラメータ
が誘導制御装置制御盤１４に与えられ、温度計１７から
は帯鋼板１１の入側検出温度（Ｔ１）が与えられる。At the time of induction heating, the running state (line speed, etc.) of the steel strip 11 is controlled by a line control panel 15.
Is given the current line speed (V). Further, various parameters, which will be described later, are provided to the induction control device control panel 14 from the induction heating device operation device 16, and the entrance detection temperature (T 1) of the steel strip 11 is provided from the thermometer 17.
【００１１】ところで、電源装置１３の出力と帯鋼板１
１の昇温量とは比例の関係にあるが、実際の加熱の際に
は、帯鋼板１１からの放熱があり、ライン速度が変化す
ると、誘導加熱コイル１２通過中の全放熱量が変化する
ことになる。このため、ライン速度が変化すると、電源
装置１３の出力と帯鋼板１１の昇温量との比例の関係が
崩れてしまう。The output of the power supply unit 13 and the steel strip 1
Although there is a proportional relationship with the amount of temperature rise of 1, in actual heating, heat is radiated from the strip steel plate 11, and when the line speed changes, the total amount of heat radiated while passing through the induction heating coil 12 changes. Will be. Therefore, when the line speed changes, the proportional relationship between the output of the power supply device 13 and the amount of temperature rise of the steel strip 11 breaks.
【００１２】誘導加熱装置制御盤１４では、ライン速度
（Ｖ）、雰囲気温度（入側検出温度：Ｔ１）、及び各種
パラメータ｛加熱目標温度（出側温度：Ｔ２）を含む｝
から上述の放熱量を算出する。この放熱量を考慮して、
次の数式に基づいて電源装置１３の出力（Ｐ）を決定す
る。In the induction heating device control panel 14, the line speed (V), the ambient temperature (input side detection temperature: T1), and various parameters (including the heating target temperature (output side temperature: T2)).
The above-mentioned heat radiation amount is calculated from the above. Considering this heat dissipation,
The output (P) of the power supply device 13 is determined based on the following equation.
【００１３】Ｐ＝［｛Ｃ×ρ×ｔ×Ｗ×（Ｔ２−Ｔ
１）｝／｛η×Ｖ−２×α×（Ｔ２−Ｔ１）×Ｗ｝］×
Ｌ／Ｖ ここで、Ｃは帯鋼板（被加熱材）の比熱、ρは被加熱材
の密度、ｔは被加熱材の板厚、Ｗは被加熱材の板幅、η
はパワー係数、αは被加熱材と雰囲気間との熱伝達係
数、Ｌは目標温度としたい位置の誘導加熱装置（コイ
ル）からの距離である。そして、これらＣ、ρ、ｔ、
Ｗ、η、α、及びＬはＴ２とともに誘導加熱装置操作器
１６から各種パラメータとして誘導加熱装置制御盤１４
に与えられる。P = [｛C × ρ × t × W × (T2-T
1)｝ / {η × V-2 × α × (T2-T1) × W}] ×
L / V where C is the specific heat of the steel strip (heated material), ρ is the density of the material to be heated, t is the thickness of the material to be heated, W is the width of the material to be heated, and η.
Is a power coefficient, α is a heat transfer coefficient between the material to be heated and the atmosphere, and L is a distance from the induction heating device (coil) at a position desired to be a target temperature. And these C, ρ, t,
W, η, α, and L are taken together with T2 from the induction heating device controller 16 as various parameters as the induction heating device control panel 14.
Given to.
【００１４】誘導加熱装置制御盤１４では、上述のよう
にした求めた出力Ｐを出力指令として電源装置１３に与
える。そして、電源装置１３はこの出力指令に基づいて
誘導加熱コイル１２に電流を与えて、帯鋼板１１を加熱
する。In the induction heating device control panel 14, the output P obtained as described above is given to the power supply device 13 as an output command. Then, the power supply device 13 applies a current to the induction heating coil 12 based on the output command to heat the steel strip 11.
【００１５】ここで、図２及び図３を参照して、図１に
示す誘導加熱装置と従来の誘導加熱装置を用いて、帯鋼
板を誘導加熱した際のライン速度と出側温度及び電源出
力との関係について説明する。図２に示すように、図１
に示す誘導加熱装置を用いた際には、ライン速度が増加
するにつれて電源出力が非線形的に増加するが、出側温
度はほぼ一定であることがわかる。一方、従来の誘導加
熱装置を用いた際には、図３に示すように、ライン速度
が増加するにつれて電源出力が線形的に増加する。そし
て、出側温度が不安定であることがわかる。つまり、従
来の誘導加熱装置では、ライン速度が遅いと出側温度が
低く、ライン速度が増加するにつれて出側温度が除々に
上昇し収束することがわかる。Referring to FIGS. 2 and 3, the line speed, the outlet temperature, and the power output when the steel strip is induction-heated using the induction heating device shown in FIG. 1 and the conventional induction heating device. Will be described. As shown in FIG.
When the induction heating device shown in FIG. 1 is used, the power supply output increases nonlinearly as the line speed increases, but it can be seen that the outlet temperature is almost constant. On the other hand, when a conventional induction heating device is used, as shown in FIG. 3, the power supply output increases linearly as the line speed increases. And it turns out that an outlet side temperature is unstable. That is, in the conventional induction heating device, it is found that the outlet temperature is low when the line speed is low, and the outlet temperature gradually increases and converges as the line speed increases.
【００１６】このようにして、図１に示す誘導加熱装置
では、ライン速度の変化に応じて求めた放熱量を考慮し
て電源出力を求め、フィードフォワード制御を行うよう
にしたので、ライン速度の変化に迅速に追従できしかも
オーバーシュートが発生することがない。つまり、出側
温度をフィードバックすることなく、帯鋼板温度を目標
温度に精度よく制御することができる。As described above, in the induction heating apparatus shown in FIG. 1, the power supply output is determined in consideration of the heat radiation amount determined according to the change in the line speed, and the feedforward control is performed. Changes can be quickly followed and overshoot does not occur. That is, it is possible to accurately control the strip steel sheet temperature to the target temperature without feeding back the outlet temperature.
【００１７】なお、上述の例では、温度計７で帯鋼板１
１の入側検出温度（Ｔ１）を測定するようにしたが、予
め雰囲気温度を誘導加熱装置操作器１６に設定してお
き、入側温度Ｔ１を雰囲気温度としてパラメータ設定す
るようにしてもよい。また、上記のパラメータαは誘導
加熱装置操作器１６でパラメータ設定することなく、α
＝ｆ（Ｌ，Ｖ，Ｔ２，Ｔ１）として、誘導制御装置制御
盤１４でαを求めるようにしてもよい。In the above-mentioned example, the strip 1
Although the inlet-side detected temperature (T1) is measured, the ambient temperature may be set in advance in the induction heater controller 16 and the inlet-side temperature T1 may be set as a parameter as the ambient temperature. Further, the above parameter α is set without setting the parameter using the induction heating device operation device 16.
= F (L, V, T2, T1), and the guidance control device control panel 14 may obtain α.
【００１８】[0018]
【発明の効果】以上説明したように、本発明ではライン
速度が変化しても帯鋼板の出側温度を一定に制御するこ
とができ、しかもオーバーシュートが発生することもな
い。As described above, according to the present invention, even when the line speed changes, the outlet side temperature of the steel strip can be controlled to be constant, and overshoot does not occur.
【図１】本発明による出力制御装置の一例を示す図であ
る。FIG. 1 is a diagram showing an example of an output control device according to the present invention.
【図２】図１に示す出力制御装置を用いた際のライン速
度と出側温度及び電源出力との関係を示す図である。FIG. 2 is a diagram showing a relationship among a line speed, an outlet temperature, and a power supply output when the output control device shown in FIG. 1 is used.
【図３】従来の誘導加熱装置におけるライン速度と出側
温度及び電源出力との関係を示す図である。FIG. 3 is a diagram showing a relationship between a line speed, an outlet temperature, and a power output in a conventional induction heating apparatus.
１１ 帯鋼板 １２ 誘導加熱コイル １３ 電源装置 １４ 誘導加熱装置制御盤 １５ ライン制御盤 １６ 誘導加熱装置操作器 １７ 温度計 11 Strip steel plate 12 Induction heating coil 13 Power supply device 14 Induction heating device control panel 15 Line control panel 16 Induction heating device operation device 17 Thermometer
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｈ０５Ｂ 6/10 ３８１ Ｈ０５Ｂ 6/10 ３８１ Ｆターム(参考） 3K059 AB19 AB20 AB26 AC09 AC33 AC54 AC68 AD04 AD15 AD26 BD23 CD06 4K038 AA01 BA01 CA02 DA01 EA01 FA03 4K043 AA01 BB04 CA04 EA04 FA03 FA12 GA10 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) H05B 6/10 381 H05B 6/10 381 F term (Reference) 3K059 AB19 AB20 AB26 AC09 AC33 AC54 AC68 AD04 AD15 AD26 BD23 CD06 4K038 AA01 BA01 CA02 DA01 EA01 FA03 4K043 AA01 BB04 CA04 EA04 FA03 FA12 GA10
Claims (3)
た誘導加熱コイルを用いて前記被加熱材を誘導加熱する
誘導加熱装置に用いられ、予め設定された目標加熱温
度、前記搬送ラインのライン速度、及び前記被加熱材加
熱前の雰囲気温度に基づいて前記被加熱材からの放熱量
を求める第１の手段と、前記放熱量を考慮して前記ライ
ン速度に基づいて前記誘導加熱コイルに加える電力をフ
ィードフォワード制御する第２の手段とを有することを
特徴とする誘導加熱装置に用いられる出力制御装置。1. An induction heating apparatus for induction heating an object to be heated by using an induction heating coil disposed along a transfer line of the material to be heated, wherein a target heating temperature set in advance and a temperature of the transfer line A line speed, and first means for calculating a heat radiation amount from the material to be heated based on an ambient temperature before the material to be heated, and the induction heating coil based on the line speed in consideration of the heat radiation amount. And a second means for feedforward controlling the applied electric power. An output control device used in the induction heating device.
いられる出力制御装置において、前記誘導加熱コイルの
入側近傍には温度計が配置されており、前記温度計で前
記被加熱材の温度を前記雰囲気温度として計測するよう
にしたことを特徴とする誘導加熱装置に用いられる出力
制御装置。2. The output control device used in the induction heating device according to claim 1, wherein a thermometer is disposed near an input side of the induction heating coil, and the thermometer measures the temperature of the material to be heated. An output control device used for an induction heating device, wherein a temperature is measured as the ambient temperature.
いられる出力制御装置において、前記雰囲気温度は予め
パラメータ設定されていることを特徴とする誘導加熱装
置に用いられる出力制御装置。3. An output control device for use in an induction heating device according to claim 1, wherein said ambient temperature is set in advance as a parameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000105859A JP2001291576A (en) | 2000-04-07 | 2000-04-07 | Output control device used for induction heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000105859A JP2001291576A (en) | 2000-04-07 | 2000-04-07 | Output control device used for induction heating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001291576A true JP2001291576A (en) | 2001-10-19 |
Family
ID=18619119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000105859A Withdrawn JP2001291576A (en) | 2000-04-07 | 2000-04-07 | Output control device used for induction heating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001291576A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015506553A (en) * | 2012-02-07 | 2015-03-02 | エルジー・ケム・リミテッド | Square battery pack with new structure |
| JP2021109990A (en) * | 2020-01-08 | 2021-08-02 | Ｊｆｅスチール株式会社 | Plate temperature control method, heating control device and method for producing metal plate |
-
2000
- 2000-04-07 JP JP2000105859A patent/JP2001291576A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015506553A (en) * | 2012-02-07 | 2015-03-02 | エルジー・ケム・リミテッド | Square battery pack with new structure |
| US9484561B2 (en) | 2012-02-07 | 2016-11-01 | Lg Chem, Ltd. | Prismatic battery pack with novel structure |
| JP2021109990A (en) * | 2020-01-08 | 2021-08-02 | Ｊｆｅスチール株式会社 | Plate temperature control method, heating control device and method for producing metal plate |
| JP7207335B2 (en) | 2020-01-08 | 2023-01-18 | Ｊｆｅスチール株式会社 | Plate temperature control method, heating control device, and metal plate manufacturing method |
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| A300 | Withdrawal of application because of no request for examination |
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