Ott GmbH motor, German Ott GmbH model, Ott GmbH price

Ott GmbH motor is an AC motor that generates electromagnetic torque through the interaction between the rotating magnetic field in the air gap and the induced current in the rotor winding, thereby converting electrical energy into mechanical energy. Three-phase asynchronous motors are mainly used as motors to drive various production machinery, such as: fans, pumps, compressors, machine tools, light industry and mining machinery, threshers and crushers in agricultural production, processing machinery for agricultural and sideline products, etc. Simple structure, easy manufacturing, low price, reliable operation, robust and durable, high operating efficiency and suitable working characteristics.

Ott GmbH motor applications

The motor stator produces a stationary magnetic field. This stationary magnetic field surrounds the armature (or rotor). An external power source excites the armature magnetic field. The shaft of a DC brushed motor also has two arc-shaped copper pieces, called commutator segments. When the motor rotates, carbon brushes slide on the commutator. This generates a rotating magnetic field that attracts the stationary magnetic field of the stator. The current in the armature and stator windings is supplied by batteries or other DC power sources (permanent magnet DC brushed motors do not have stator windings). The battery (or DC power source) provides a constant DC voltage. The voltage amplitude determines the motor speed, so the battery or DC power source is a linear excitation source. The most effective way to change the speed of a DC brushed motor is to use pulse width modulation (pwm) technology. pwm technology switches a constant voltage source at a fixed frequency. Changing the pulse width of the pwm signal can adjust the motor speed. The ratio between the high and low levels of the pulse is called the duty cycle of the pwm signal. The amplitude of the DC battery level is equal to the average amplitude of the pwm signal. DC brushed motors have good starting and speed regulation performance, and are often used in occasions with high requirements for starting and speed regulation, such as large reversible rolling mills, mine hoists, high-speed elevators in hotels, gantry planers, electric locomotives, internal combustion locomotives, urban trams, subway trains, electric bicycles, papermaking and printing machinery, ship machinery, large precision machine tools and large cranes and other production machinery.

Ott GmbH motor maintenance

Motors 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 be kept 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 motor nameplate data, and the motor load current must not exceed the specified value on the nameplate. Otherwise, the cause must be identified and measures taken, and operation can only continue after the abnormal condition is eliminated. Take necessary means to detect the temperature rise of various parts of the motor. For wound-rotor motors, attention should be paid to the contact pressure, wear, and sparking between the brushes and slip 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 motor 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 comprehensive inspection and cleaning of the disassembled parts, generally once a year.

Ott GmbH motor performance

Although the working principle of the motor is similar to that of a split-phase single-phase asynchronous motor, the rotor resistance of the former is much larger than that of the latter. Therefore, compared with a single-unit asynchronous motor, a servo motor has three significant characteristics: 1, large starting torque. Due to the large rotor resistance, there is a clear difference compared with the torque characteristic curve of ordinary asynchronous motors. It can make the critical slip ratio S0 > 1, which not only makes the torque characteristic (mechanical characteristic) closer to linear, but also provides a larger starting torque. Therefore, when there is a control voltage on the stator, the rotor rotates immediately, i.e., it has the characteristics of fast starting and high sensitivity. 2, wide operating range, 3, no self-rotation phenomenon. For a normally operating servo motor, as long as the control voltage is lost, the motor stops immediately. When the servo motor loses control voltage, it is in a single-phase operating state. Due to the large rotor resistance, the two torque characteristics generated by the interaction of the two rotating magnetic fields rotating in opposite directions in the stator with the rotor (T1－S1, T2－S2 curves) and the synthetic torque characteristic (T－S curve). The output power of AC servo motors is generally 0.1-100W. When the power frequency is 50Hz, the voltages are 36V, 110V, 220, 380V; when the power frequency is 400Hz, the voltages are 20V, 26V, 36V, 115V and others. AC servo motors run smoothly and with low noise. However, the control characteristic is nonlinear, and due to the large rotor resistance, the loss is large and the efficiency is low. Therefore, compared with DC servo motors of the same capacity, they are larger in volume and heavier in weight, so they are only suitable for small-power control systems of 0.5-100W.

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