AMG-Pesch motor Germany AMG-Pesch model AMG-Pesch price

AMG-Pesch motor is a type of motor that can be used in flammable and explosive environments, producing no electrical sparks during operation. Explosion-proof motors are mainly used in coal mines, oil and natural gas, petrochemical, and chemical industries. In addition, they are widely used in textiles, metallurgy, urban gas, transportation, grain and oil processing, papermaking, pharmaceuticals, and other sectors. As primary power equipment, explosion-proof motors are typically used to drive pumps, fans, compressors, and other transmission machinery.

AMG-Pesch motor mechanical characteristics

The advantages of the motor include simple structure, no windings on the rotor, low maintenance cost, and long service life. It is used in many occasions, almost covering all fields such as daily life, factory equipment, ports and terminals, oil fields, and coal mines. Squirrel-cage motors occupy an important position in the large family of motors. Their advantages include simple structure, durability, reliable operation, high efficiency, convenient maintenance, and low price; their disadvantages include low power factor and poor speed regulation performance (but with the emergence of single-winding multi-speed motors and the adoption of thyristor stepless speed regulation, speed regulation performance is improving). Squirrel-cage motors have a wide range of applications and are widely used in China's industrial and agricultural production. According to statistics from relevant departments, about 90% of mechanically driven equipment uses squirrel-cage motors. This type of motor has the largest social ownership, and its electricity consumption accounts for more than 85% of the total power load consumption. Factory and mine electricians, as well as rural electricians, mainly install, maintain, and service this type of motor in their daily work. Since motor repair is relatively complex, it requires repair personnel to have not only professional knowledge and technical skills in repair but also various specialized equipment and materials, which general electricians do not possess, making motor repair somewhat difficult.

AMG-Pesch motor advantages

The motor operates in a self-controlled manner, so it does not require additional starting windings on the rotor like synchronous motors under heavy-load start-up with variable frequency speed regulation, nor does it produce oscillation and loss of synchronism during sudden load changes. The permanent magnets in small and medium-capacity brushless DC motors mostly use rare-earth neodymium-iron-boron (Nd-Fe-B) materials with high magnetic energy product. Therefore, the volume of rare-earth permanent magnet brushless motors is reduced by one frame size compared to three-phase asynchronous motors of the same capacity. Over the past thirty years, research on variable frequency speed regulation for asynchronous motors has ultimately been seeking methods to control asynchronous motor torque. Rare-earth permanent magnet brushless DC motors will surely show advantages in the field of speed regulation due to their wide speed regulation range, small size, high efficiency, and small steady-state speed error. Brushless DC motors, having the characteristics of DC brushed motors and being frequency-changing devices, are also known as DC variable frequency; the internationally common term is BLDC. The operating efficiency, low-speed torque, and speed accuracy of brushless DC motors are better than those of inverters using any control technology, making them worthy of industry attention. Products have been produced exceeding 55kW, and can be designed up to 400kW, meeting the industry's needs for energy saving and high-performance driving.

AMG-Pesch motor braking methods

For motor braking, users often confuse the roles of electromagnetic braking, regenerative braking, and dynamic braking, leading to the selection of incorrect accessories. Dynamic brakes consist of dynamic braking resistors and shorten the mechanical feed distance of servo motors through energy consumption braking during faults, emergency stops, or power outages. Regenerative braking refers to feeding the energy generated by braking back to the DC bus through the inverter circuit when the servo motor decelerates or stops, where it is absorbed by the RC circuit. Electromagnetic braking locks the motor shaft via a mechanical device. Differences among the three: (1) Regenerative braking only works when the servo drive is functioning normally and cannot brake the motor during faults, emergency stops, or power outages. Dynamic brakes and electromagnetic brakes do not require power supply during operation. (2) Regenerative braking is performed automatically by the system, whereas dynamic brakes and electromagnetic brakes require external relay control. (3) Electromagnetic braking is generally activated after SV and OFF; otherwise, it may cause amplifier overload. Dynamic braking is generally activated after SV, OFF, or main circuit power-off; otherwise, it may cause overheating of the dynamic braking resistor.

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