Frequency converter output voltage and voltage, power relationship - Database & Sql Blog Articles

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Some output frequencies of the inverter are related to voltage, power, etc.
1. Correspondence between inverter output frequency and output voltage: The inverter output frequency is proportional to the output voltage. Example: When the output frequency is adjusted from 50Hz to 30Hz, the measured output voltage is 232V. At this time, the output frequency is 60% of the rated frequency, and the output voltage is also 60% of the input voltage.
2. Correspondence between inverter output frequency and input power: The output frequency of the inverter is proportional to the cube of the input power. Example: When the output frequency is adjusted from 50Hz to 30Hz, the input power is reduced from the rated value to P input =
Set: Motor rated power = 100KW, input power == 21.6KW.
3. Correspondence between inverter output frequency and input current: The output frequency of the inverter is proportional to the cube of the input current. Example: When the output frequency is adjusted from 50Hz to 30Hz, the input current is reduced from the rated value to P input =
Set: Motor rated current = 200A, input power == 43.2A.