All Categories
History
This section provides an overview for synchronous motors as well as their applications and principles. Also, please take a look at the list of 0 synchronous motor manufacturers and their company rankings.
Table of Contents
Categories Related to Synchronous Motors
A synchronous motor is a motor in which there is no slip between the rotating magnetic field and the rotor. The rotation speed is determined by the number of poles in the motor itself and the frequency of the power supply.
Since there is no need to take the slip into consideration, it can be differentiated from ordinary AC motors. In terms of classification, it is treated as one of the induction motors. Synchronous motors require a DC power supply to the rotor in addition to the AC power supply.
Synchronous motors are used in rolling mills in the steel industry because their speed does not depend on the load side.
The speed of synchronous motors is controlled by a resolver or other rotary position detector attached to the anti-load side of the motor. Originally, synchronous motors were used with ordinary AC motors because of their difficulty in speed control.
In a synchronous motor, a rotating magnetic field is generated by the frequency of the AC power flowing through the stator, and the rotating speed of the rotor is determined by this rotating magnetic field (the rotating magnetic field and the rotor speed are the same).
On the rotor side, the DC power supplied through the brushes and slip rings flows to the coil wound on a piece of iron, which acts as an electromagnet. This piece of iron has a polarity (N-pole or S-pole), which changes depending on the position of the commutator. The rotor rotates when the polarity of this polarity and the polarity of the rotating magnetic field generated on the stator side repel (same polarity) or attract (different polarity) each other.
Rotor rotation speed N can be expressed as 120F/P. Unlike normal AC motors, no slip occurs between the stator and the rotor at this time. In order to supply DC power to the rotor side, a slip ring and brushes must be provided. The brushes are consumable parts and must be replaced periodically.
*Including some distributors, etc.
Sort by Features
Number of Employees
Newly Established Company
Company with a History
54 products found
54 products
Keisei Co., Ltd.
520+ people viewing
Last viewed: 21 hours ago
■Applications We handle all Nidek Advanced Motor (formerly Nidec Servo) products, so if you cannot find a product in your search, please contact us...
Robotena Co., Ltd.
260+ people viewing
Last viewed: 2 hours ago
Drives slowly with 100V AC from a household power source. This is the rotation speed in the 50Hz area (Eastern Japan). In the 60Hz area (Western Ja...
5 models listed
Nikko Electric Industry Co., Ltd.
560+ people viewing
Last viewed: 21 hours ago
■Features Lineup ranges from 200V/0.75 to 15kW and 400V/0.75 to 15kW ・High efficiency exceeding IE4 ・Mounting dimensions compatible with general-...
Tokai Trading Co., Ltd.
520+ people viewing
Last viewed: 21 hours ago
Ultra-long life bearings for compressors: Supports 24-hour continuous operation
Nikko Electric Industry Co., Ltd.
480+ people viewing
Last viewed: 21 hours ago
■Features Lineup ranges from 200V/15 to 37kW and 400V/15 to 37kW ・High efficiency approaching IE4 ・Small and lightweight compared to general-purp...
ZIEHL-ABEGG SE
480+ people viewing
Last viewed: 21 hours ago
■Summary Ziehl-Abegg strives to provide quick and simple proposals to efficiently maximize the profits of our customers. Specifically, the question...
ZIEHL-ABEGG SE
490+ people viewing
Last viewed: 21 hours ago
■Summary Meeting the needs of building owners, operators and elevator users is a critical criterion for success for elevator manufacturers. As a pa...
ZIEHL-ABEGG SE
600+ people viewing
Last viewed: 1 hour ago
■Summary ZAdisc can basically replace the conventional system on a 1:1 basis. For motive pulleys, existing cables are applicable. Also, by utilizin...
ZIEHL-ABEGG SE
480+ people viewing
Last viewed: 2 hours ago
■Summary Many people around the world use elevators to get around their offices, apartments, and hotels during the day. You can move quickly, safel...
ZIEHL-ABEGG SE
300+ people viewing
Last viewed: 1 hour ago
■Summary Our intelligent high-tech elevator machines with StPUGurt (steel and PU belt) offer a wide range of superior elevator technology for all t...
Keisei Co., Ltd.
570+ people viewing
Last viewed: 21 hours ago
■Features D series unidirectional type
