Electronic power-saving device for three phase sewing machine

Abstract

The invention relates to an electronic power-saving controller used for a three-phase sewing machine, comprising three groups of inverted U-shaped filters, three groups of dual-voltage stabilizers, a clamper, a current inductor, a rectifier circuit, a speed regulation circuit, an automatic control circuit, a trigger and a main circuit; the electronic power-saving controller is characterized in that the inverted U-shaped filter is connected in parallel with a power network; the dual-voltage stabilizer is connected with the inverted U-shaped filter so as to carry out the clamping inhibition to the output; the rectifier circuit consists of the current inductor T, resistances, capacitors, diodes and stabilivolts; the automatic control circuit consists of triodes, diodes, and resistances; the trigger circuit consists of R13 and VD3; and the main circuit and the speed regulation circuit are formed by the connection of VD2, C1-C3, R13-R14, VD3 and W2. By adopting the technical proposal, the electronic power-saving controller has simple structure and convenient usage, saves the power energy, protects the equipment, saves the energy by more than 45%, puts an end to the long-term pollution of the transient current to the power supply and prolongs the service life of the sewing machine.

Description

technical field [0001] The invention relates to motor energy-saving technology, in particular to an energy-saving controller capable of automatically adjusting light loads of sewing machines. Background technique [0002] Nowadays, sewing machines have become a necessity in the production of the garment industry. Due to the high energy consumption, large quantity and long working hours of sewing machines, the energy consumption of sewing machines in a garment enterprise has accounted for a very high proportion of the total energy consumption. As a result, the power supply is tense, and the power is often cut off, and the enterprise still needs to pay high electricity bills. However, there are waste factors in the power consumption of the sewing machine, for example, because the design of the industrial sewing machine generally increases the capacity of the motor power by 10-20% to protect the motor and ensure long-term operation. After starting, it generally runs at about 4...

AI Technical Summary

Problems solved by technology

The power supply is tense, and the power is often cut off, and the enterprise still needs to pay high electricity bills

However, there are wasteful factors in the power consumption of sewing machines. For example, due to the design of industrial sewing machines, the motor power will generally be increased by 10-20% to protect the motor and ensure long-term operation.

After starting, it generally runs at about 40-60% of the rated load, and at this time the motor is in the low-efficiency operation area, resulting in a waste of electric energy

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