High actuating torque low operating power three phase capacitane type bisquirrel motor

Abstract

The invention belongs to electric motor, especially relates to triphase capacitance double rotor cage electric motor with high starting torque and low running power, which is made up of a stator, a rotor and a shaft. The stator slot of the electric motor is embedded with tow sets of low harmony concentric triphase symmetric phase change double-layer windings, the compensation windings 3-1 is connected with a capacitance C in series, the electric motor double rotor cage arranges two types, one is casting aluminum alloy double rotor cage rotor, the second one is casting aluminum double rotor cage rotor, the double rotor cage rotor is low drain reactance, the work winding and the compensation winding of the stator are connected in parallel onto the triphase power, when starting, the motor outputs high starting torque and inputs low starting current, high starting factor; when the electric motor runs normally, it can output the low power, high efficiency, high power factor, high overloading ability, which is a small 'horse' but driving large car, it saves the energy, belongs to the high efficiency energy-saving electric motor.

Description

technical field [0001] The invention belongs to electric motors, in particular to a three-phase capacitive double squirrel-cage electric motor with high starting torque and low operating power. technical background [0002] At present, there are many types and varieties of motors in AC power transmission systems in countries all over the world. Machines, compressors, etc., they all have a large moment of inertia and moment of inertia, and the motor that drives this type of machinery must have a large starting torque. When a three-phase squirrel-cage motor is used for dragging, in order to meet the requirements of high starting torque, the motor must be selected with a large capacity, so that the phenomenon of large horses and small carts will appear during normal operation after starting. When the motor is running under load, the efficiency and power factor will decrease, which will increase the loss of the motor, waste energy, and increase the production cost. Therefore, h...

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Problems solved by technology

Three special three-phase asynchronous motors are used at home and abroad: the first type has a high starting torque three-phase asynchronous motor, such as the domestic JQO 2 series, when used in beam pumping machinery, the phenomenon of large horse-drawn trolleys appears under normal operating conditions; the second type of high-slip three-phase asynchronous motor, such as the domestic YH series, has low efficiency and low power factor during operation; The third type of two-speed three-phase asynchronous motor is used in coal mine belt conveyors. Practice has proved that it has two key problems: one is that the control equipment is complicated and expensive. There will be a great impact on the electricity and electricity, resulting in a high failure rate and even damage to the equipment. Second, the phenomenon of large horses and small carts will appear during normal operation.

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