| 摘要 |
<p>A circuit for reduction of energy consumption and improved performance of single- and three-phase asynchronous motors is provided in the form of a merely electronic circuit varying in design dependent on its purpose. With a single-phase asynchronous motor it is used to increase the secondary starting torque, to actuate a starting switch by auxiliary phase inductivity, to reduce energy consumption as compared with the typical conventional consumption, and to increase the starting torque during motor startup without the requirement of a centrifugal starting switch. With a three-phase asynchronous motor the circuit of the invention achieves a reduction of energy consumption as compared with the typical conventional consumption. The respective circuit includes an oscillating assembly consisting of a triac (T1), a diac (D1), a capacitor (C1) and a resistor (R1), to which other electronic elements may be added. The energy consumption reduction as compared with the typical conventional consumption of single- and three-phase asynchronous motors is effected by reduction of reactive motor currents thus to establish more natural operation conditions for the motor. As a byproduct, an increase of the starting torque during startup is obtained at lower energy consumption from the grid.</p> |
