CURRENT DETECTING DEVICE, AIR CONDITIONING APPARATUS, CORRECTION CONSTANT CALCULATING SYSTEM AND CORRECTION CONSTANT CALCULATING METHOD

• Main Authors: HASHIMOTO, Masafumi, MAEDA, Hirohito, SHIMATANI, Keisuke, YAGI, Satoshi, IKEDA, Motonobu
• Format: Patent
• Language: English; French; German
• Published: 19.07.2017
• Subjects: AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING; 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; BLASTING; CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS; CONTROL OR REGULATION THEREOF; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; HEATING; LIGHTING; MECHANICAL ENGINEERING; RANGES; VENTILATING; WEAPONS

This invention provides a current detecting device with which an accurate motor current can be obtained and an air conditioning apparatus equipped therewith. This invention also provides a correction constant calculating system equipped with the current detecting device and a correction constant calculating method. A current detecting device (9) is equipped with a current leveling unit (93), a GND wire (94), and a current detecting unit (95). The current leveling unit (93) levels a drive current (Id) that is passed through a second motor driver (82) for driving a second fan motor (81). On the GND wire (94), a motor current (Im) that has been passed through the second fan motor (81) and the drive current (Id) that has been leveled by the current leveling unit (93) flow. The current detecting unit (95) detects the sum of the motor current (Im) and the drive current (Id) that has been leveled flowing on the GND wire (94).