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Analysis of the causes of damage to AC servo motors

Analysis of the causes of damage to AC servo motors

2024.04.03

Three-phase AC servo motor is widely used, but through the long-term operation, a variety of faults will occur, timely judgment of the cause of the failure, the corresponding treatment, is to prevent the expansion of the fault, to ensure the normal operation of the equipment is an important task. First, the motor can not rotate after the power is turned on, but there is no abnormal noise, no odor and smoke.

How servo motors work

How servo motors work

2024.04.03

The principle of operation of a servo motor is relatively simple, but its efficiency is relatively high. The servo circuitry is built inside the motor unit, which uses a flexible shaft usually equipped with gears. Electrical signals control the motor and also determine the amount of movement of the shaft. The internal setup of a servo motor is simple: a small DC motor, a control circuit and a potentiometer. The DC motor is connected to the control wheel via a gear, and as the motor rotates, the resistance of the potentiometer changes, and the control circuit is able to accurately regulate movement and direction.

Three-phase asynchronous motors with single-layer windings

Three-phase asynchronous motors with single-layer windings

2024.04.03

Single-layer winding is a winding in which only one effective side of the coil is embedded in each slot of the stator, thus its total number of coils is only half of the total number of slots in the motor. The advantages of single-layer winding are that the number of winding coils is small and the process is relatively simple; there is no interlayer absolute edge so that the utilization rate of the slot is improved; the single-layer structure will not occur between the phase breakdown faults. The disadvantage is that the electromagnetic waveform generated by the winding is not ideal, the motor's iron loss and noise are larger and starting performance is also slightly worse, so the single-layer winding is generally only used for small-capacity asynchronous motors. Single-layer winding in accordance with the shape of its coil and end connection part of the arrangement of different, can be divided into chain winding, cross-chain winding, concentric winding and cross concentric winding and other forms of winding.

Starting of three-phase asynchronous motors

Starting of three-phase asynchronous motors

2024.04.03

1、Direct starting However, the current of three-phase asynchronous motor can reach 6-7 times of the rated current when starting directly, which has a big impact on the power grid, especially for the high-power motor. 2、Frequency sensitive resistance starting Frequency-sensitive resistance starting refers to connecting frequency-sensitive resistance in series in the main circuit when the motor starts, so as to reduce the starting current. Frequency sensitive resistance can change the starting current smoothly, the impact on the power grid is small, it is a more ideal way to start. However, high-power frequency sensitive resistors are used in the form of inductance, so in use will produce a large electromagnetic eddy current, will reduce the power factor of the grid.

The appearance of streaks on the outer surface of extruded profiles for motor housings

The appearance of streaks on the outer surface of extruded profiles for motor housings

2024.04.03

First, there is a seam angle or the impact of poor welding: Hollow aluminum alloy profile using plane shunt combination die extrusion process, this process in the production of profiles relatively deepen the difficulty, the metal through the shunt, weld joint process, so the hollow profile is the existence of weld line. There are two reasons for the gap: one is the shunt hole, weld chamber is narrow, metal supply flow is insufficient, the metal in the weld chamber does not form enough hydrostatic pressure, the product is not welded and flow out of the die hole, resulting in the existence of weld gap products; is too much lubrication and poor lubrication.

The motor housing is the main part of the electric submersible pump motor

The motor housing is the main part of the electric submersible pump motor

2024.04.03

Motor casing is the main part of the electric submersible pump motor, its processing accuracy directly affects the quality of the electric submersible pump. Due to than buckle hole turning process motor shell large radius thickness than easy to produce elliptical deformation, deformation is generally 0.03-0.10mm, can not meet the user's requirements, if this problem is not solved, will lead to huge economic losses to produce qualified products.

What are the surface treatment technologies for motor housing machining?

What are the surface treatment technologies for motor housing machining?

2024.04.03

Powder electrostatic spraying aluminum extrusion: powder electrostatic spraying profiles are characterized by excellent corrosion resistance, acid and alkali salt spray resistance is greatly superior to oxidation coloring profiles. Plasma-enhanced electrochemical surface ceramization aluminum profiles: this type of profile is the world's advanced processing technology technology. The quality of this profile is excellent, but the cost is higher. It has more than 20 kinds of shades, and its big feature is that it can be color-coated like calico according to the needs, and the surface of the profile is colorful with good decorative effect.

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guanglu

Guanglu specializes in the manufacturing of IEC and Gost standard motors, featuring both aluminium (Frame 56-180) and cast iron (Frame 80-400) construction. Our motors meet IE1 to IE4 efficiency requirements, with power ratings ranging from 0.09kW to 630kW.

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