There are many conditions for the selection of transformer capacity of inverter power supply.
(1) it can be chosen according to the economic capacity: when the iron loss of the transformer whose load ratio is 0.5-0.6 is equal to the copper loss, the efficiency is the highest, the capacity of the transformer at this time can be called the economic capacity, and the transformer can be selected according to the economic capacity.
(2) selection of transformer capacity when the load is motor: if the load is asynchronous motor, the efficiency and power factor of motor should be considered, and the marked power on the nameplate of motor is the active power output of motor. In general, the capacity of the transformer can be selected by double (in high frequency model) or 1.5 time (in low frequency model) the sum of the power of the asynchronous motor nameplate.
P'isib k'iinil: 2019-12-12