Synchronous Motor

On the market, there are primarily two types of synchronous electric motors, that is, non-excited synchronous motors and DC excited synchronous motors. The former is designed with a self-starting circuit and needs no additional excitation supply, while the latter demands direct current for excitation. Additionally, the non-excited motor usually falls into two subtypes, that is, reluctance motors and hysteresis motors. Synchronous electric motors in reluctance designs have low torque and are mainly used for instrumentation applications. Hysteresis synchronous motors are more frequently used as servomotors and timing motors. They cost more and are regularly used in places requiring precise constant speed.

Comparisons
The most distinctive feature between a synchronous motor and an asynchronous motor lies in that the former requires no slip under usual operating conditions while the latter must slip to produce torque. A common feature between a synchronous motor and a squirrel cage induction motor is that the motor speed is determined by the number of pairs of poles and the line frequency.
In a synchronous electric motor, the rotor poles are connected to each other and move at the same speed. This is the reason why we call it a synchronous motor.

Detailed introduction on synchronous motors
1. Our products
This synchronous electric machine produced by our company is one of our electric motors, among which there are DC motors, squirrel cage AC motors, slip ring motors, explosion proof motors, petroleum drilling motors and mine elevator motors, etc. All our products have won stable customer base in both national and international market.
2. Features
We employ microcomputers to make an optimum design during motor design, and adopt new materials and advanced technologies during motor production. Hence, our motors have such features as reliable performance, low temperature rise, small loss, high efficiency, low vibration, and large starting torque. Meanwhile, its simple structure also makes it convenient for maintenance.
3. Applications
Synchronous motors can be used in all industries where constant speed is required. For instance, they have found applications in driving a wide variety of equipment, like air compressors, grinding mills, rolling mills, air blowers, water pumps, to name a few.
4. Structural description
(1) Construction
Synchronous motors can be designed in many a structure. In addition to the most commonly used double-bearing pedestal structure, synchronous electric motors can also be designed into non-bearing pedestal structures and single-bearing pedestal structures. Additionally, self cooling and ventilating motors, horizontal mounted or vertical mounted motors, brush excitation model and brushless excitation model synchronous motors are all available here.
(2) Protection level
Enclosure protection levels of our synchronous motors range from IP00 to IP54.
(3) Material
The motor frame, end shield and bottom plates are all made of steel plate, so the motor has strong rigidity and strength.
(4) Cooling methods
Designed with thermal detector elements in stator and bearings, the synchronous motor can automatically conduct temperature monitoring.
This synchronous electric equipment is designed with salient type rotor magnetic pole and equipped with fan at the two ends of the magnetic yoke. So, the cooling air can be drawn into the inner part of rotor to cool the rotor core. This provides the motor with good cooling effect. Some other cooling methods, like air-water cooling, tubular ventilating, are also possible.
(5) Bearing
This synchronous motor can be designed with end shield type sliding bearings, pedestal sliding bearings, and grease lubricating rolling bearings, etc.

Synchronous motor

Large sized synchronous variable frequency motor

We are an experienced synchronous motor manufacturer and supplier based in China. Due to reliable quality, competitive price and environmentally friendliness, our products are well accepted in a wide range of countries, like the United States, Italy, Brazil, Russia, and Ethiopia, etc. To satisfy customers' diversified demands, we can also produce DC motors, squirrel cage AC motors, slip ring motors, as well as electrical generators. Please contact us for more detailed information.