bevi motor Germany bevi model bevi price

bevi motor refers to the engine that controls the operation of mechanical components in a servo system; it is an auxiliary motor indirect speed change device. Servo motors can control speed with very accurate position precision, converting voltage signals into torque and rotational speed to drive controlled objects. The rotor speed of a servo motor is controlled by the input signal and responds quickly. In automatic control systems, it serves as an actuator, featuring small electromechanical time constants and high linearity, converting received electrical signals into angular displacement or angular velocity output on the motor shaft. Divided into two main categories: DC and AC servo motors. Their main characteristics are no self-rotation when the signal voltage is zero, and the rotational speed decreases uniformly as torque increases.

bevi motor classification

Types of motors: 1. Classification by working power supply: According to the different working power supplies of motors, they can be divided into DC motors and AC motors. Among them, AC motors are further divided into single-phase motors and three-phase motors. 2. Classification by structure and working principle: Motors can be divided into DC motors, asynchronous motors, and synchronous motors according to their structure and working principle. Synchronous motors can be further divided into permanent magnet synchronous motors, reluctance synchronous motors, and hysteresis synchronous motors. Asynchronous motors can be divided into induction motors and AC commutator motors. Induction motors are further divided into three-phase asynchronous motors, single-phase asynchronous motors, and shaded-pole asynchronous motors. AC commutator motors are further divided into single-phase series-wound motors, AC/DC universal motors, and repulsion motors. DC motors can be divided into brushless DC motors and brushed DC motors according to their structure and working principle. Brushed DC motors can be divided into permanent magnet DC motors and electromagnetic DC motors. Electromagnetic DC motors are further divided into series-wound DC motors, shunt-wound DC motors, separately excited DC motors, and compound-wound DC motors. Permanent magnet DC motors are further divided into rare-earth permanent magnet DC motors, ferrite permanent magnet DC motors, and Alnico permanent magnet DC motors. 3. Classification by starting and running mode: Motors can be divided into capacitor-start single-phase asynchronous motors, capacitor-run single-phase asynchronous motors, capacitor-start-run single-phase asynchronous motors, and split-phase single-phase asynchronous motors according to their starting and running modes. 4. Classification by application: Motors can be divided into drive motors and control motors according to their application. Drive motors are further divided into motors for power tools (including drilling, polishing, grinding, slotting, cutting, reaming, and other tools), motors for home appliances (including washing machines, electric fans, refrigerators, air conditioners, recorders, VCRs, DVD players, vacuum cleaners, cameras, hair dryers, electric shavers, etc.), and motors for other general small mechanical equipment (including various small machine tools, small machinery, medical devices, electronic instruments, etc.). Control motors are further divided into stepper motors and servo motors. 5. Classification by rotor structure: Motors can be divided into squirrel-cage induction motors (formerly known as squirrel-cage asynchronous motors) and wound-rotor induction motors (formerly known as wound-type asynchronous motors) according to the rotor structure. 6. Classification by operating speed: Motors can be divided into high-speed motors, low-speed motors, constant-speed motors, and adjustable-speed motors according to their operating speed. Low-speed motors are further divided into gear reduction motors, electromagnetic reduction motors, torque motors, and claw-pole synchronous motors. Adjustable-speed motors, in addition to being divided into stepped constant-speed motors, stepless constant-speed motors, stepped variable-speed motors, and stepless variable-speed motors, can also be divided into electromagnetic adjustable-speed motors, DC adjustable-speed motors, PWM variable frequency adjustable-speed motors, and switched reluctance adjustable-speed motors. The rotor speed of an asynchronous motor is always slightly lower than the synchronous speed of the rotating magnetic field. The rotor speed of a synchronous motor remains at synchronous speed regardless of the load.

bevi motor braking method

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 AC/DC universal motors. They are named for their field windings and armature windings connected in series. 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, while the poles of a DC motor 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 by the operating principle of DC motors. The stator winding and armature winding of a single-phase series-wound motor are connected in series. The direction of rotation of a series-wound motor 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 the magnetic field it produces) change direction simultaneously. According to the left-hand rule, the direction of the electromagnetic force does not change, so the series-wound motor can always maintain a constant direction of rotation. When powered in the forward direction, the electromagnetic torque is counter-clockwise; if the positive and negative polarities of the power supply are swapped, both the excitation flux and the armature current direction change simultaneously, but the electromagnetic torque direction remains counter-clockwise. Thus, the motor direction remains unchanged, meaning the electromagnetic torque and rotation direction of a single-phase AC series-wound motor do not change with the polarity of the power supply.

bevi motor structure

The motor consists of two basic parts: a stationary stator and a rotating rotor. The rotor is installed inside the stator cavity and supported on two end covers by bearings. To ensure the rotor can rotate freely within the stator, there must be a gap between the stator and the rotor, called the air gap. The air gap of a motor is a very important parameter; its size and symmetry greatly affect the motor's performance. Figure 2 shows the components of a three-phase squirrel-cage asynchronous motor. The stator consists of three-phase stator windings, a stator core, and a frame. The three-phase stator windings are the circuit part of the asynchronous motor, playing a crucial role in its operation as the key component for converting electrical energy into mechanical energy. The structure of the three-phase stator windings is symmetrical, generally having six output terminals U1, U2, V1, V2, W1, W2, located in the junction box outside the frame. They can be connected in star (Y) or delta (△) configuration as needed. The stator core is part of the magnetic circuit of the asynchronous motor. Since the main magnetic field rotates relative to the stator at synchronous speed, to reduce losses caused in the core, the core is laminated from high-permeability silicon steel sheets 0.5mm thick. Both sides of the silicon steel sheets are coated with insulating varnish to reduce eddy current losses in the core. The frame, also known as the housing, mainly supports the stator core and withstands the reaction forces generated during the motor's loaded operation. Heat generated by internal losses during operation is also dissipated outward through the frame. Frames for medium and small motors are generally made of cast iron. For large motors, where casting is inconvenient due to size, steel plates are often welded to form the frame.

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