Does a change in the control mode of the high-voltage frequency converter affect power consumption?
Thread Content
The primary fan of the circulating fluidized bed boiler is controlled using AC high-voltage frequency conversion, as several consecutive trips of the protection systems led to abnormal shutdowns of the boiler (I believe it was an overcurrent protection issue). Around April last year, after seeking assistance from the inverter manufacturer’s staff, the control method was changed from slip frequency control to vector control, which eliminated the protection-related shutdown incidents. But our statistics show that the specific electricity consumption per ton of steam for the entire boiler system can no longer reach the levels it once achieved (
Just install a meter on the inverter separately and calculate the energy consumption. Since the original version would jump anyway, it is quite possible that an increase in energy consumption will occur with a change in the control method.
Sacrifice some efficiency for performance; normal
Vector control is more stable but consumes more power; that’s true
Does changing the control method cause the current to increase? Is there a comparison of motor currents under the same operating conditions? Logically, the trend can be seen