Intelligent power saver for motor

Abstract

The invention discloses a motor intelligent power saver, which includes a DC voltage stabilizing circuit, a pulse width modulation circuit, a half-bridge drive circuit and a high-frequency isolation transformer circuit. The DC voltage stabilizing circuit includes a transformer, a bridge rectifier circuit, a filter capacitor, current limiting resistor and Zener diode. The pulse width modulation circuit includes a core TL494CN, the pin 8 of the chip TL494CN is connected to the anode of the Zener diode, and the pin 9 and pin 10 of the chip TL494CN are drive signal output terminals; the half-bridge drive circuit includes A field effect tube and a field effect tube, the G pole of the field effect tube is connected to the pin 9 of the chip TL494CN, the G pole of the field effect tube Q2 is connected to the pin 10 of the chip TL494CN, and the field effect tube The D pole of the D pole and the D pole of the field effect transistor are respectively connected to the input end of the high frequency isolation transformer circuit.

Description

technical field [0001] The invention relates to a power saver, more specifically, the invention relates to a motor intelligent power saver. Background technique [0002] Motor saver is to adjust the input power of the motor at any time according to the load rate of the motor without changing the rated speed of the motor, so as to ensure the stable operation of the motor at the optimal load rate and reduce the copper loss, iron loss and stray energy of the motor. Loss and additional loss, so that the life of the motor is extended, but also greatly improve the operating efficiency of the motor, thereby achieving the purpose of saving electricity. At present, compared with developed countries, domestic motors generally have lower operating efficiency. This is because considering factors such as grid voltage fluctuations, equipment overload, and mechanical wear, 30% of the power margin is generally reserved when selecting motor equipment. . However, these devices rarely reach ...

AI Technical Summary

Problems solved by technology

These devices often have a low load rate, low operating efficiency, and the waste of electric energy is staggering.