WATTCO motor Germany WATTCO model WATTCO price

WATTCO motor is a device that places the rotor in a rotating magnetic field, where it obtains torque under the action of the rotating magnetic field, causing the rotor to rotate. The rotor is a rotatable conductor, usually in the shape of a squirrel cage. It was invented by electrical engineer Nikola Tesla in 1887. The rotor is a rotatable conductor, usually in the shape of a squirrel cage. The stator is the non-rotating part of the motor, and its main task is to generate a rotating magnetic field. The rotating magnetic field is not achieved by mechanical means. Instead, alternating current is passed through several 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 motors and three-phase motors. Single-phase motors are used in applications such as washing machines and electric fans; three-phase motors are used as power equipment in factories.

WATTCO motor differences

The main difference between motors lies in whether their rotor speed is consistent with the stator's rotating magnetic field. If the rotor speed is the same as the stator's rotating magnetic field, it is called a synchronous motor; otherwise, it is called an asynchronous motor. In addition, the stator windings of synchronous and asynchronous motors are the same; the difference lies in the rotor structure of the motor. The rotor of an asynchronous motor is a short-circuited winding that generates current through electromagnetic induction. The rotor structure of a synchronous motor is relatively complex, with DC excitation windings, so an external excitation power source is required to introduce current through slip rings. Therefore, the structure of synchronous motors is relatively complex, and the manufacturing and maintenance costs are relatively high. Compared to asynchronous motors, which can only absorb reactive power, synchronous motors can both generate and absorb reactive power! The speed of a synchronous motor is synchronized with the electromagnetic speed, while the speed of an asynchronous motor is lower than the electromagnetic speed. For a synchronous motor, as long as it does not lose synchronization, the speed will not change regardless of the load size. The speed of an asynchronous motor changes constantly with the load size. Synchronous motors have high precision but are complex to manufacture, expensive, and relatively difficult to maintain. Asynchronous motors, although slower to respond, are easy to install and use, and are inexpensive. Therefore, synchronous motors are not as widely applied as asynchronous motors. Synchronous motors are mostly used in large generators, while asynchronous motors are almost exclusively used in motor applications.

WATTCO motor performance

The output torque of the motor decreases as the speed increases, and drops sharply at higher speeds, so its maximum operating speed is generally between 300 and 600RPM. AC servo motors provide constant torque output, meaning they can output rated torque within their rated speed (generally 2000RPM or 3000RPM), and provide constant power output above the rated speed. Four, overload capacity differs: stepper motors generally do not have overload capacity. AC servo motors have strong overload capacity. Five, operating performance differs: stepper motor control is open-loop control. If the starting frequency is too high or the load is too large, step loss or stalling may occur. If the speed is too high when stopping, overshoot may occur. Therefore, to ensure control accuracy, acceleration and deceleration must be handled properly. AC servo drive systems are closed-loop control. The driver can directly sample the feedback signal from the motor encoder, internally forming position and speed loops, generally avoiding step loss or overshoot phenomena common in stepper motors, making control performance more reliable. Six, speed response performance differs: it takes 200 to 400 milliseconds for a stepper motor to accelerate from standstill to operating speed (generally a few hundred revolutions per minute). AC servo systems have better acceleration performance. Taking the Sanyo 400W AC servo motor as an example, it takes only a few milliseconds to accelerate from standstill to its rated speed of 3000RPM, making it suitable for control applications requiring rapid start-stop operations. In summary, AC servo systems outperform stepper motors in many performance aspects. However, stepper motors are often used as actuator motors in applications with lower requirements. Therefore, in the design process of control systems, factors such as control requirements and cost must be comprehensively considered to select the appropriate control motor.

WATTCO motor energy-saving measures

Measures to improve motor efficiency. Motor energy saving is a systematic project involving the entire life cycle of the motor, from design and manufacturing to selection, operation, adjustment, maintenance, and disposal. The effectiveness of energy-saving measures should be considered over the entire life cycle of the motor. Domestically and internationally, the main considerations for improving motor efficiency in this area include the following aspects. The design of energy-saving motors refers to the use of modern design methods such as optimization design technology, new material technology, control technology, integration technology, and testing technology to reduce power loss and improve motor efficiency, thereby designing high-efficiency motors. While converting electrical energy into mechanical energy, the motor itself also loses a portion of energy. Typical AC motor losses can generally be divided into fixed losses, variable losses, and stray losses. Variable losses change with the load, including stator resistance loss (copper loss), rotor resistance loss, and brush resistance loss. Fixed losses are independent of the load, including core loss and mechanical loss. Core loss consists of hysteresis loss and eddy current loss, which is proportional to the square of the voltage, with hysteresis loss also being inversely proportional to frequency. Other stray losses are mechanical and other losses, including bearing friction loss and windage loss caused by the rotation of fans, rotors, etc.

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