NUM AG motor Germany NUM AG model NUM AG price

NUM AG motor is a machine used to achieve mutual conversion between mechanical energy and AC electrical energy. Due to the tremendous development of AC power systems, AC motors have become the most commonly used motors. Compared with DC motors, AC motors have a simple structure, are easy to manufacture, relatively robust, and can be easily made into high-speed, high-voltage, high-current, and large-capacity motors because they do not have commutators (see commutation of DC motors). The power coverage range of AC motors is very large, from a few watts to hundreds of thousands of kilowatts, or even millions of kilowatts. In the early 80s of the 20th century, the largest steam turbine generator had reached 150 ten thousand kilowatts.

NUM AG motor maintenance

The motor should be kept clean at all times, and no debris is allowed to enter the interior of the motor; the air inlet and outlet must remain unobstructed. Use instruments to monitor the power supply voltage, frequency, and load current of the motor. The power supply voltage and frequency must comply with the data on the motor nameplate, and the motor load current must not exceed the specified value on the nameplate. Otherwise, the cause must be identified and measures taken; operation can only continue after the abnormal condition has been eliminated. Take necessary means to detect the temperature rise of various parts of the motor. For wound-rotor motors, attention should be paid frequently to the contact pressure, wear, and sparking between the brushes and the collector rings. When the motor stops, disconnect the switch in the stator circuit, then move the brush lifting mechanism to the start position and disconnect the short-circuiting device. Regular maintenance is performed after the motor has been in operation, generally divided into minor repairs and major overhauls. Minor repairs are general inspections without major disassembly of the motor starting equipment and the whole unit, approximately once every quarter. Major overhauls require disassembling all transmission devices and all components of the motor, and conducting a comprehensive inspection and cleaning of the disassembled parts, generally once a year.

NUM AG motor applications

One of the most typical applications of the motor is traction for maglev trains. Its advantages such as high speed, comfort, safety, pollution-free operation, noiselessness, vibration-free operation, and energy saving are increasingly favored by people. The primary part (stator assembly) is installed on the track, making the vehicle lighter, power supply more convenient, and technology simpler. The levitation coils generate electromagnetic attraction, pulling the vehicle from below towards the track and maintaining a certain vertical distance. The magnetic force generated by the guidance coils maintains a certain lateral distance between the vehicle and the track. All of this ensures through a set of high-precision electronic adjustment systems that the vehicle remains constantly oriented and levitated at 10 to 15mm while moving in a straight line. The electricity for the levitation and guidance systems as well as the onboard equipment is supplied by the levitation linear generator. In the case of superconducting levitation, the vehicle can be levitated to above 100mm. Application of motors in vertical lifting systems: As modern high-rise buildings are built higher and underground mining goes deeper, the defects of traditional rope-based lifting systems become increasingly obvious, and the mechanical strength of their lifting steel ropes also has a limit range. The lifting system using permanent magnet linear synchronous motors is a ropeless lifting system, featuring characteristics such as unlimited lifting height (depth) by equipment, fewer equipment units, less space occupation, simplified lifting system, improved system efficiency, reduced construction costs, and saved electrical energy. Compared with steel rope lifting systems, linear motor lifting systems have another greatest advantage: they can achieve high-speed lifting that the latter cannot reach, shortening the lifting cycle and improving work efficiency.

NUM AG motor advantages

The motor operates in a self-controlled manner, so it does not require an additional starting winding on the rotor like synchronous motors under heavy-load starting with variable frequency speed control, nor does it produce oscillation and step-out when the load changes suddenly. 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 control of asynchronous motors has ultimately been seeking methods to control the torque of asynchronous motors. Rare-earth permanent magnet brushless DC motors will surely show advantages in the field of speed control due to their features such as wide speed regulation, small volume, high efficiency, and small steady-state speed error. Because brushless DC motors possess the characteristics of DC brushed motors and are also devices with changing frequency, they are also known as DC variable frequency, with the internationally common term being BLDC. The operating efficiency, low-speed torque, and speed accuracy of brushless DC motors are better than inverters of any control technology, so they deserve 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 drives.

Weidou Intelligent Technology specializes in selling German NUM AG motors, NUM AG motors, NUM AG drives, NUM AG synchronous motors, NUM AG servo motors, NUM AG DC motors, NUM AG AC motors, NUM AG stepper motors, NUM AG synchronous motors, NUM AG asynchronous motors, NUM AG single-phase motors, NUM AG three-phase motors, NUM AG drive motors, NUM AG geared motors, NUM AG electric motors, NUM AG original German imports. Welcome customers to inquire and order.