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The briwatec motor is a device that places the rotor in a rotating magnetic field, where it obtains torque under the action of the field, causing the rotor to rotate. The rotor is a rotatable conductor, typically squirrel-cage in shape. It was invented by electrical engineer Nikola Tesla in 1887. The rotor is a rotatable conductor, typically squirrel-cage in shape. The stator is the non-rotating part of the motor, with the main task of generating a rotating magnetic field. The rotating magnetic field is not achieved by mechanical means. Instead, alternating current is applied to pairs of electromagnets, causing their magnetic pole properties to change cyclically, thus equivalent to a rotating magnetic field. This type of motor does not have brushes or slip rings like DC motors. Depending on the type of AC power used, there are single-phase and three-phase motors; single-phase motors are used in appliances such as washing machines and electric fans, while three-phase motors serve as power equipment in factories.

briwatec motor working principle

The electromagnetic switch of the motor mainly consists of two parts: the electromagnet mechanism and the motor switch. The electromagnet mechanism is composed of a fixed core, a movable core, an attraction coil, and a holding coil. The fixed core remains stationary, while the movable core can move axially within the copper sleeve. A push rod is fixed to the front end of the movable core, with a switch contact disc installed at the front end of the push rod. The rear section of the movable core is connected to the shift fork via adjustment screws and connecting pins. A return spring is installed outside the copper sleeve to reset the movable core and other moving components. When the magnetic flux generated by the attraction coil and the holding coil has the same direction, their electromagnetic forces superimpose, pulling the movable core forward until the contact disc at the front end of the push rod connects the electric switch contacts, thereby completing the main circuit of the motor. When the magnetic flux generated by the attraction coil and the holding coil has opposite directions, their electromagnetic forces cancel each other out. Under the action of the return spring, the movable core and other moving components automatically reset, disconnecting the contact disc from the contacts and breaking the main circuit of the motor.

briwatec motor structure

This motor component consists of an internal gear ring and a matching gear or rotor. The internal gear ring is fixed to the housing. Oil entering through the oil port pushes the rotor to revolve around a center point. This slowly rotating rotor drives the output via a splined shaft, forming a cycloidal hydraulic motor. After the initial release of this cycloidal motor, decades of evolution led to the formation of another concept of motor. This motor installs rollers within the built-in gear ring. Motors with rollers provide higher starting and running torque; the rollers reduce friction, thereby improving efficiency, allowing the output shaft to produce stable output even at very low speeds. Changing the direction of input and output flow allows the motor to reverse quickly and produce equivalent torque in both directions. Each series of motors offers various displacement options to meet different speed and torque requirements.

briwatec motor braking methods

The motor is an AC motor with brushes and a commutator. Some series-wound motors can be powered by either AC or DC, known as universal motors. They are named for their series-connected field and armature windings. The structure of a single-phase series-wound motor is very similar to that of a DC series-wound motor. The main difference is that the stator core of a single-phase series-wound motor must be laminated from silicon steel sheets, whereas DC poles can be either laminated or made as a solid structure. The principle of generating rotating torque in a single-phase AC series-wound motor is similar to that of a DC series-wound motor and can be explained using the operating principles of DC motors. The stator winding and armature winding of a single-phase series-wound motor are connected in series. The direction of rotation depends on the direction of electromagnetic torque and current. Therefore, when operating on an AC power supply, as the power alternates, the polarity of the stator magnetic field and the rotor current (or its generated magnetic field) change direction simultaneously. According to the left-hand rule, the direction of the electromagnetic force does not change, so the series-wound motor maintains a constant direction of rotation. When powered in the forward direction, the electromagnetic torque is counter-clockwise; if the positive and negative poles of the power supply are swapped, the excitation flux and armature current direction change simultaneously, but the electromagnetic torque direction remains counter-clockwise. Thus, the motor's direction of rotation does not change, meaning the electromagnetic torque and rotation direction of a single-phase AC series-wound motor do not vary with changes in power supply polarity.

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