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Electric Linear Actuator

How does an electric linear actuator work? Here is the working principle of electric linear actuator. The electric motor drives a pair of screw nuts after gear deceleration. The rotary motion of the motor is turned into linear motion, and the actuator action is completed with the help of forward and reverse rotation of the motor. Such mechanisms can complete the rotation, shaking and other complex actions. By changing the length of the lever force arm, the stroke can be increased. Electric linear actuator is a general-purpose auxiliary drive device, which can be widely used in medical, furniture, home, electronics, electric power, machinery, metallurgy, transportation, mining, petroleum, chemical, lifting, transportation, construction, grain and feed processing and other industries. The linear actuator features energy-saving and environmental protection, reliable performance, sensitive action, smooth operation, same push and pull force, good environmental adaptability, etc. Additional
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DC Contactor Relay

A contactor is an automatic switcher that is used to connect or disconnect the AC and DC main circuits or large-capacity control circuits with loads. The contactor is to control the motor and it is also used for other electrical loads, such as electric heaters, electric welding machines, lighting equipment. Contactors are very important device in industrial field, especially the high voltage DC contactors . They can not only connect and cut off the circuit, but also have a low voltage release protection. The contactor has a large control capacity, is well suitable for frequent operation and long-distance control and is one of the important components in the automatic control system. The DC contactor relay is generally used to control the DC electrical equipment. The coil is supplied with DC current. The working principle and structure of the DC contactor are basically the same as that of the AC contactor. What is the working principle of a DC contactor? When the contactor coil is ener
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Difference between AC-DC-AC Phase Converter and Frequency Converter+Transformer

There are some difference between AC-DC-AC phase converter and frequency converter plus transformer. Technically, phase converter features AC-DC-AC circuit structure, adopts the modulation control technology of SVPWM space vector algorithm to convert ordinary single-phase electricity to industrial three-phase electricity, which some users can not apply for due to harsh site restrictions and the single phase to three phase converters are widely applicable for various loads, such as robot arms, motors, lathes, elevators, inverters, compressors, etc. However, frequency converter plus transformer is a power control device that uses both frequency conversion technology and microelectronics technology to control AC motors by changing the frequency of the motor's working power supply. The detailed difference between them is shown as following. Usage For phase converter, through converting single phase to three phase power , such as turning the single phase 220V to three-phase 380V power
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What is Wind Turbine?

The structure of a small wind power generation system is generally composed of a wind turbine , a generator, a rudder and an electrical control part. Conventional small wind turbines are mostly composed of induction generators or permanent magnet synchronous generators and AC/DC converters, batteries and inverters. In the blowing wind, the wind wheel rotates, turning aerodynamic energy into mechanical energy. The hub of the wind wheel is fixed on the generator shaft and the rotation of the wind wheel drives the rotation of the generator shaft, driving the permanent magnet three-phase generator to generate three-phase alternating current (AC). The wind speed changes continuously and the current and voltage generated by the generator also change accordingly. The generated electricity is rectified by the controller, is changed from alternating current (AC) to direct current (DC) with a certain voltage, make the battery charged. The direct current output from the battery pack is transforme
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The Difference in Design between Synchronous and Asynchronous Motors

 There some difference in desigh between synchronous and asynchronous motors. 1. The biggest difference between synchronous and asynchronous motors is whether the rotor speed is consistent with the magnetic field speed of the stator. If the rotor's rotational speed is the same as that of the stator, it is called a synchronous motor. Otherwise, it is called an asynchronous motor. 2. When the number of poles is constant, there is a close connection between the motor's speed and frequency, namely, it is synchronous connection. Asynchronous motors are also called induction motors, whose rotor speed during operation is always lower than that of synchronous motors. 3. The synchronization refers to that after the current flows through the electric drive (stator) windings, a rotating magnetic field will be formed in the air gap. The rotation direction and speed of the magnetic field are the same as the rotation of the rotor. Therefore, it is synchronous. As for asynchronous motors, th
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Advantages of Brushless DC Motors

Brushless DC motor is one of synchronous motors, whose rotor speed is affected by the speed of the rotating magnetic field of its stator and the number of poles of the rotor. Brushless DC motors not only have a series of advantages of AC motors, such as simple structure, reliable operation and convenient maintenance but also have features such as high operating efficiency and good speed regulation performance of DC motors. The most important part of a brushless DC motor is its control structure, whose driver can control the rotor to maintain a certain speed, and its performance is more stable. Brushless DC motor is a low-power motor that uses electronic commutation and is widely used in modern production equipment, instrumentation and household appliances. Peaco Support brushless DC motors have many advantages. 1. High efficiency The efficiency of a traditional DC motor is generally about 75%, while the efficiency of a general brushless DC motor can reach more than 96%. With high effi
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Why My Torque Sensor Reading is Unstable?

Torque sensors often have unstable output signals during use. But the torque sensor testing is qualified after the production. What is the reason for this? In fact, there are many reasons for the unstable signal of the torque sensor during use and the common ones mainly include the following three aspects. The torque sensor is not installed properly and the axis is not parallel, which will cause the signal output to be unstable. The torque sensor is easy to be damaged if it is in this state for a long time. The power supply voltage is unstable. Our torque sensors are generally powered by a dual voltage of plus and minus 15V and 24V or other voltages. Unstable power supply voltage will also cause unstable output signals. Interference from other machines next to the torque sensor. For example, if there is a frequency converter next to the torque sensor, it is easy to cause the output signal to be unstable. The solution is to add a 1:1 isolation transformer in front of the power supply of
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