INVERTER DEVICE, INVERTER DEVICE CONTROL METHOD, AND BILLET HEATER

• Main Authors: HAMADA SHINZO, MORIGAMI KOICHI, ISHIMA TSUTOMU
• Format: Patent
• Language: English; Japanese
• Published: 15.09.2022
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

To inhibit a function of a parallel resonance load connected to an inverter device used by connecting with the parallel resonance load from being influenced by increase/decrease in number of loads input to the parallel resonance load or the like.SOLUTION: An inverter device includes: reference frequency storage means for storing a reference frequency previously set as that of output voltage to a parallel resonance load; comparison frequency acquisition means for acquiring a frequency output to the parallel resonance load as a comparison frequency; correction coefficient acquisition means for acquiring a correction coefficient on the basis of a ratio of the reference frequency stored in the reference frequency storage means and the comparison frequency acquired by the comparison frequency acquisition means; calculation means for performing calculation of multiplying the correction coefficient acquired by the correction coefficient acquisition means by set output voltage previously set as output voltage to the parallel resonance load; and control means for comparing a calculation result by the calculation means with output voltage to the parallel resonance load to perform control so that the calculation result and the output voltage to the parallel resonance load become the same value.SELECTED DRAWING: Figure 6 【課題】並列共振負荷に接続して用いるインバータ装置に接続される並列共振負荷の機能が、並列共振負荷に投入される負荷数の増減などにより影響を受けることのないようにする。【解決手段】並列共振負荷への出力電圧として予め設定されている基準周波数を記憶する基準周波数記憶手段と、並列共振負荷へ出力される周波数を比較周波数として取得する比較周波数取得手段と、基準周波数記憶手段に記憶した基準周波数と比較周波数取得手段が取得した比較周波数との比に基づいて補正係数を取得する補正係数取得手段と、補正係数取得手段が取得した補正係数と並列共振負荷への出力電圧として予め設定された設定出力電圧とを乗算する演算を行う演算手段と、演算手段による演算結果と並列共振負荷への出力電圧とを比較して、演算結果と並列共振負荷への出力電圧とが同じ値になるように制御する制御手段とを有するようにした。【選択図】 図６