US 12,245,347 B2
Induction heating system, induction heating method, output monitoring apparatus, output monitoring method, and induction heating apparatus
Tetsuya Ono, Tokyo (JP); Masato Sugimoto, Tokyo (JP); Yutaka Kiyosawa, Tokyo (JP); Toshihiro Aiba, Tokyo (JP); Kazutomi Oka, Tokyo (JP); Kunihiro Kobayashi, Tokyo (JP); Fumiaki Ikuta, Tokyo (JP); and Kazuhiro Kawasaki, Tokyo (JP)
Assigned to NETUREN CO., LTD., Tokyo (JP)
Filed by NETUREN CO., LTD., Tokyo (JP)
Filed on Aug. 4, 2021, as Appl. No. 17/393,558.
Application 17/393,558 is a division of application No. 16/132,600, filed on Sep. 17, 2018, abandoned.
Application 16/132,600 is a division of application No. 14/401,250, granted, now 10,159,117, issued on Dec. 18, 2018, previously published as PCT/JP2013/064424, filed on May 17, 2013.
Claims priority of application No. 2012-115121 (JP), filed on May 18, 2012; application No. 2012-115122 (JP), filed on May 18, 2012; and application No. 2012-115123 (JP), filed on May 18, 2012.
Prior Publication US 2021/0368589 A1, Nov. 25, 2021
Int. Cl. H05B 6/06 (2006.01); G01R 21/06 (2006.01); G01R 31/40 (2020.01); H05B 6/10 (2006.01)
CPC H05B 6/06 (2013.01) [G01R 21/06 (2013.01); G01R 31/40 (2013.01); H05B 6/101 (2013.01)] 5 Claims
OG exemplary drawing
 
1. An output monitoring apparatus adapted to be attached to one or more power supply apparatuses, each power supply apparatus comprising a converter configured to convert an alternate current into a direct current and an inverter configured to switch on and off, at given frequencies, the direct current input from the converter, the power supply apparatus being adapted to be connected to a single heating coil to supply power to the single heating coil, the output monitoring apparatus comprising:
a measuring section configured to measure, at each sampling time, a current and a voltage of the direct current output from the converter to the inverter; and
a processing unit configured to 1) obtain an amount of electric power for each of the given frequencies at which the inverter is switched on and off from values of the current and the voltage measured at each sampling time by the measuring section, and 2) obtain an average electric power for each of the given frequencies based on the amount of electric power for each of the given frequencies,
wherein the processing unit is configured to determine the average electric power for each of the given frequencies with respect to a supply command issued to the power supply apparatus.