US 12,004,271 B2
Power control device and power control method
Norikazu Yurugi, Tokyo (JP); and Tetsuya Murata, Tokyo (JP)
Assigned to RKC INSTRUMENT, INC., Tokyo (JP)
Appl. No. 17/416,564
Filed by RKC INSTRUMENT INC., Tokyo (JP)
PCT Filed Jun. 28, 2019, PCT No. PCT/JP2019/025874
§ 371(c)(1), (2) Date Jun. 21, 2021,
PCT Pub. No. WO2020/136958, PCT Pub. Date Jul. 2, 2020.
Claims priority of application No. PCT/JP2018/047469 (WO), filed on Dec. 25, 2018.
Prior Publication US 2022/0086958 A1, Mar. 17, 2022
Int. Cl. G01R 19/165 (2006.01); G05F 1/66 (2006.01); H05B 3/00 (2006.01); H05B 3/22 (2006.01)
CPC H05B 3/0019 (2013.01) [G01R 19/165 (2013.01); G05F 1/66 (2013.01); H05B 3/22 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A power control device for controlling power supply to each of a plurality of loads in a system for heating or cooling a workpiece by the plurality of loads, the power control device comprising:
a current detector for measuring a combined current value wherein currents flowing through the plurality of loads are combined; and
an output calculation unit for calculating a correction value which is a value obtained by dividing a total value of a product of an operation output value for each of the loads and each rated current value of each of the loads by a combined current value obtained by the current detector, and controlling power supply to each of the loads based on a corrected operation output value which is a product of an operation output value for each of the loads and the correction value.