1-Phase Induction Motors

ATO economical induction motor for sale. There are two types of AC induction motor, which are single phase and split phase induction motor.
Single phase motor is an asynchronous motor that works at 200V/110V/230V/240V AC and 50/60 Hz frequency. 1/2 hp ~ 7.5hp 1 phase induction motor has two capacitors to provide zero starting torque at rest. Cheap single phase AC induction motors are used for drills, air conditioners, compressors, pumps, cranes, and garage door opening and closing systems.
Two types of NEMA AC induction motors are provided. Single-phase 230V induction motor and split phase 115/230V induction motor is AC asynchronous motor. ODP/ TEFC enclosure type for selection. 1/2 hp ~ 7.5 hp AC induction motors feature a NEMA B design which provides low starting current and high locked rotor torque, suited for a broad variety of applications.

Single phase induction motor working principle

Through the relative movement of the rotating magnetic field generated by the stator and the rotor winding, the rotor winding cuts the magnetic field lines to generate an induced electromotive force so that an induced current is generated in the rotor winding. The induced current in the rotor winding interacts with the magnetic field to generate electromagnetic torque, which makes the rotor rotate. Because when the rotor speed gradually approaches the synchronous speed, the induced current gradually decreases, and the generated electromagnetic torque also decreases accordingly. When the asynchronous motor works in the motor state, the rotor speed is less than the synchronous speed. In order to describe the difference between the rotor speed n and the synchronous speed n1, the slip is introduced.

Advantages of 1 phase induction motors

• Asynchronous motor(induction motor) is mall and lightweight.
• 1 phase induction motor is easy to realize high-speed rotation with a speed exceeding 10000r/min
• High operating efficiency at high speed and low torque.
• High torque at low speed and wide speed control range.
• Low manufacturing cost.
• Single-phase induction motor has a simplified control device.
• There are many types of induction motors to meet different needs.

Types of induction motors

Induction motors, also known as asynchronous motors, are available as single-phase induction motors and three-phase induction motors. So what is the difference between them?

Single Phase vs. Three Phase Induction Motor

Working principle:

• The principle of a single phase induction motor is that when a single phase sinusoidal current passes through the stator windings, the motor will generate an alternating magnetic field. The strength and direction of the magnetic field change sinusoidally with time, but its orientation in space is fixed, so this magnetic field is also called an alternating pulsating magnetic field.
• A three phase motor means that when the 3 phase stator windings of the motor (each phase differs by 120 degrees in electrical angle) are connected to three phase alternating current, a rotating magnetic field will be generated, which cuts the rotor windings.

Definition:

• 1 phase induction motors usually have two-phase windings on the stator, and the rotor is a common squirrel cage. The distribution of the two-phase windings on the stator and the different power supply conditions can produce different starting characteristics and operating characteristics.
• 3 phase induction motor means that when the 3 phase stator windings of the motor (each phase differs by 120 degrees in electrical angle) are connected to 3 phase alternating current, a rotating magnetic field will be generated. The rotating magnetic field cuts the rotor windings to generate electricity. It includes three phase synchronous motors and three phase asynchronous motors.

Applications:

• Single phase motors are closely related to people's daily life. Large amount in production. Especially with the improvement of people's living standards, the consumption of single phase induction motors is also increasing. It is used in products including micro water pumps, refiners, threshers, grinders, woodworking machinery, medical equipment, etc. In terms of life, there are electric fans, hairdryers, exhaust fans, washing machines, refrigerators, etc., and there are many types, But the power is smaller.
• Three phase asynchronous motor is a kind of power equipment that converts electrical energy into mechanical energy and supplies it to production machinery. It is widely used in machinery, metallurgy, coal, petroleum, chemical and other industrial fields. Most production machinery is driven by 3 phase induction motors as the prime mover. For example, all kinds of machine tools, lifting equipment, material handling devices, electric shovels, steel rolling mills, water pumps, fans and textile machinery. A modern factory needs hundreds or even tens of thousands of three phase asynchronous motors.