1.Full load state

Inverter: the actual shaft power of the host 110×1.1 = 121kW, motor efficiency 0.95, transmission efficiency 1, frequency converter efficiency 0.99, cooling fan power 3kW

Then the input power of the machine is: 121÷0.95÷1÷0.99+3 = 131.65kw

The ordinary frequency machine: the actual shaft power of the host 110×1.1 = 121kW, motor efficiency 0.92, transmission efficiency 1, cooling fan power 3kW

Then the input power of the machine is: 121÷0.92÷1+3 = 134.52kw

The efficiency of frequency converter is higher than that of ordinary frequency converter: 2.18%

2.60% load state

(1).Inverter: actual shaft power of the host 110×1.1×0.6 = 72.6kw, motor efficiency 0.94, transmission efficiency 1, frequency converter efficiency 0.99, frequency conversion regulation suction efficiency 1, cooling fan power 3kW

Then the input power of the machine is: 72.6÷0.94÷1÷0.99÷1+3 = 81.01kW

(2) ordinary frequency machine: the actual shaft power of the main engine is 110×1.1×0.6 = 72.6kw, the motor efficiency is 0.91, the transmission efficiency is 1, the power frequency loading and unloading adjustment machine suction efficiency is 0.8, the cooling fan power is 3kW

Then the input power of the machine is 72.6÷0.91÷1÷0.8+3 = 102.73kw

The efficiency of frequency converter is higher than that of ordinary frequency converter: 21.1%

3. Annual electricity saving amount:

Based on 12 hours per day and 300 working days per year, take 60% load as an example:

Annual electricity saving amount :(102.73-81.01) ×12×300×1 = 78192