Effepizeta motor Germany Effepizeta model Effepizeta price

Effepizeta motors consist of the motor body and the driver, representing a typical mechatronic product. Brushless motors refer to motors without brushes and commutators (or slip rings), also known as commutator-less motors. As early as the nineteenth century, when motors were first invented, the practical motors produced were of the brushless type, namely AC squirrel-cage asynchronous motors, which were widely used. However, asynchronous motors have many insurmountable drawbacks, resulting in slow development of motor technology. Transistors were invented in the mid-twentieth century, giving rise to DC brushless motors that use transistor commutation circuits to replace brushes and commutators. This new type of brushless motor is called an electronically commutated DC motor, which overcomes the drawbacks of the first generation of brushless motors.

Effepizeta motor performance

Motor performance is closely related to its excitation method. Typically, there are 4 types of excitation methods for DC motors: separately excited DC motors, shunt-excited DC motors, series-excited DC motors, and compound-excited DC motors. Understand the characteristics of each of the 4 methods: 1. Separately excited DC motor: The field winding has no electrical connection with the armature; the field circuit is supplied by a separate DC power source. Therefore, the field current is not affected by the armature terminal voltage or armature current. 2. Shunt-excited DC motor: The circuit is connected in parallel for current division; the voltage across the shunt field winding is the same as the voltage across the armature. However, the field winding is wound with thin wire and has many turns, resulting in high resistance, which keeps the field current low. 3. Series-excited DC motor: The current is connected in series for voltage division; the field winding is connected in series with the armature, so the internal magnetic field of this motor changes significantly with changes in armature current. To prevent large losses and voltage drops in the field winding, the resistance of the field winding should be as low as possible. Therefore, series-excited DC motors are typically wound with thicker wire and have fewer turns. 4. Compound-excited DC motor: The motor's magnetic flux is generated by the field currents in two windings.

Effepizeta motor structure

Motor control structure: The DC brushless motor is a type of synchronous motor, meaning the rotor speed is influenced by the speed of the stator's rotating magnetic field and the number of rotor poles (P), where N = 120 · f / P. With a fixed number of rotor poles, changing the frequency of the stator's rotating magnetic field changes the rotor speed. A DC brushless motor adds electronic control (driver) to a synchronous motor, controlling the frequency of the stator's rotating magnetic field and feeding back the rotor speed to the control center for repeated correction, aiming to achieve characteristics close to those of a DC motor. In other words, a DC brushless motor can maintain a constant rotor speed within the rated load range even when the load changes. The DC brushless driver includes a power section and a control section: the power section supplies three-phase power to the motor, while the control section converts the input power frequency as required. The power section can accept direct DC input (typically 24V) or AC input (110V/220 V); if the input is AC, it must first be converted to DC by a converter (converter). Whether the input is DC or AC, before entering the motor coils, the DC voltage must be converted by an inverter (inverter) into 3-phase voltage to drive the motor. The inverter (inverter) generally consists of 6 power transistors (Q1～Q6), divided into upper arms (Q1, Q3, Q5) and lower arms (Q2, Q4, Q6), connected to the motor to act as switches controlling the current through the motor coils. The control section provides PWM (Pulse Width Modulation) to determine the switching frequency of the power transistors and the commutation timing of the inverter (inverter). DC brushless motors are generally intended for speed control applications where the speed remains stable at the set value with minimal fluctuation despite load variations. Therefore, the motor is equipped with hall-sensors (hall-sensor) inside to sense the magnetic field, serving as closed-loop speed control and providing the basis for phase sequence control. However, this is used only for speed control and cannot be used for position control.

Effepizeta motor classification

Motor classification: I. Classification by motor structural dimensions: (1) Large motors refer to motors with a frame center height greater than 630mm. (2) Medium-sized motors refer to motors with a frame center height between 355 and 630mm. (3) Small motors refer to motors with a frame center height of 80-315mm. Two II. Classification by motor speed: (1) Constant-speed motors include standard squirrel-cage, special squirrel-cage (deep-bar, double-cage, high starting torque), and wound-rotor types. (2) Adjustable-speed motors are motors equipped with commutators. (3) Variable-speed motors include pole-changing motors, single-winding multi-speed motors, special squirrel-cage motors, and slip motors. Three III. Classification by mechanical characteristics: (1) Standard squirrel-cage asynchronous motors are suitable for low-capacity applications with small slip variation and constant-speed operation, such as blowers, centrifugal pumps, and lathes, where low starting torque and constant load are required. (2) Deep-bar squirrel-cage motors are suitable for medium-capacity applications requiring slightly higher starting torque than standard squirrel-cage asynchronous motors. (3) Double-cage asynchronous motors are suitable for medium and large squirrel-cage rotor motors. They offer high starting torque but slightly lower maximum torque. They are suitable for constant-speed loads requiring high starting torque, such as conveyor belts, compressors, crushers, mixers, and reciprocating pumps. (4) Special double-cage asynchronous motors are made from high-impedance conductor materials. Characteristics include high starting torque, low maximum torque, and high slip, enabling speed adjustment. Suitable for equipment such as punch presses and cutting machines. (5) Wound-rotor asynchronous motors are suitable for applications requiring high starting torque and low starting current, such as conveyor belts, compressors, and rolling mills. Four IV. Classification by motor protection type: (1) Open-type motors have no specific protection for rotating and live parts other than necessary support structures. (2) Protected-type motors have necessary mechanical protection for rotating and live parts but do not significantly impede ventilation. Depending on the ventilation opening protection structure, there are three types: mesh-covered, drip-proof, and splash-proof. Drip-proof differs from splash-proof; drip-proof prevents vertically falling solids or liquids from entering the motor interior, while splash-proof prevents liquids or solids from entering the motor interior from any direction within an angle of 1000 degrees from the vertical. (3) Enclosed-type motors have a housing structure that prevents free exchange of air between the inside and outside of the housing, but complete sealing is not required. (4) Waterproof-type motors have a housing structure that prevents water under certain pressure from entering the motor interior. (5) Watertight-type motors have a housing structure that prevents water from entering the motor interior when the motor is submerged in water. (6) Submersible motors can operate underwater for extended periods under specified water pressure. (7) Explosion-proof motors have a housing structure that prevents internal gas explosions from propagating to the exterior and igniting explosive gases outside the motor. Five V. Classification by motor operating environment: Types include standard, humid-heat, dry-heat, marine, chemical, high-altitude, and outdoor.

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