Three Phase Synchronous Motor Electromagnetic Brake AC Scooters Elevator Gear Motor Shaft Engine Drive Stepper 3 Phase Synchronous Motor

• Customization: Available
• Application: Universal, Industrial, Household Appliances, Car, Power Tools
• Operating Speed: High Speed
• Model NO.: Three Phase Synchronous Motor-YY
• Excitation Mode: Compound
• Function: Control, Driving
• Casing Protection: Protection Type
• Number of Poles: 12
• Structure and Working Principle: Brush
• Type: ZSN
• Certification: ISO9001, CCC
• Brand: -
• Transport Package: Wooden Box
• Trademark: no brand
• Origin: China
• HS Code: 8501400000
• Production Capacity: 5000PCS/Week

Product Description

Three Phase Synchronous Motor Electromagnetic Brake AC Scooters Elevator Gear Motor Shaft Engine Drive Stepper 3 Phase Synchronous Motor

Product Description

A 3-Phase Synchronous Motor is an AC motor where the rotation of the rotor is synchronized with the frequency of the supply current. Unlike induction motors, synchronous motors do not experience "slip"; their rotor rotates at the exact synchronous speed determined by the supply frequency and the number of poles. This unique characteristic is achieved by supplying both AC to the stator windings and a separate DC excitation to the rotor winding (or using permanent magnets on the rotor in smaller motors).

Advantages of 3-Phase Synchronous Motors:

1. Constant Speed Operation (Synchronous Speed):

   • The most significant advantage is that the motor's speed remains absolutely constant from no-load to full-load conditions, as long as the supply frequency is stable. This precision is critical for applications requiring exact timing and speed control, where any deviation (slip) is unacceptable.

2. Power Factor Correction Capability:

   • Synchronous motors can operate at leading, lagging, or unity power factor by simply adjusting the DC excitation provided to the rotor.
   • When over-excited, they can operate at a leading power factor, meaning they supply reactive power to the grid. This is a unique and highly valuable characteristic, allowing them to be used as synchronous condensers to improve the overall power factor of an industrial plant, reducing reactive power consumption and potentially lowering electricity bills.

3. High Efficiency:

   • Synchronous motors generally exhibit higher efficiency than induction motors of comparable ratings, especially at lower speeds and higher power factors. This is because there are no rotor copper losses associated with induced currents (as in induction motors' slip).

4. High Starting Torque (for some designs):

   • While historically not self-starting, modern large synchronous motors often incorporate amortisseur (damper) windings, allowing them to start as induction motors and then pull into synchronous speed. These designs can provide high starting torque.

5. Robust and Durable Construction:

   • Synchronous motors, especially larger industrial ones, are built to be very robust and durable, capable of operating in heavy load conditions and harsh industrial environments for extended periods.

6. Better Voltage Regulation:

   • Their ability to operate at a leading power factor can help in maintaining stable voltage levels in the power system, especially when connected to large inductive loads.

7. Wider Air Gap:

   • Synchronous motors can typically be designed with a wider air gap between the stator and rotor compared to induction motors. This can lead to better mechanical stability and easier manufacturing tolerances.