DC Fan inverter low cost, low capacity inverter

"DC Fan" current of the inverter continues to run, the peak rating refers to a rectangular wave, sine wave current induction motor required DC motor requires a square wave current. Current rating of the inverter to continue running this generally refers to a sine wave of rms. To adhere to the inverter to control the motor current, DC voltage between the inverter and the motor EMF should be sufficient difference. In this case, if we assume that the peak current of the induction motor and the DC motor is equal to the first-mentioned power output 33% higher than the latter, that is to say, the same rectifier / inverter can drive the motor output power higher than the induced 33% of the brushless DC motor.