The Application and Prospect of Hollow Cup Motors.
The hollow cup motor breaks through the traditional rotor structure of motors in terms of structure, using a coreless rotor, also known as a hollow cup rotor.
This novel rotor structure completely eliminates the electrical energy loss caused by eddy currents formed by the iron core, and significantly reduces its component and moment of inertia
Lacking the mechanical energy loss of the rotor itself. Due to the structural changes of the rotor, the operating characteristics of the electric motor have been greatly improved, which not only has outstanding energy-saving features,
More importantly, it has control and drag characteristics that iron core motors cannot achieve.
Hollow cup motors are divided into two types: brushed and brushless. The rotor of brushed hollow cup motors has no iron core, while the stator of brushless hollow cup motors has no iron core.
The winding adopts a triangular connection method.
Main Features
Hollow cup electric motors mainly include:
1. Energy saving features: The energy conversion power is very high, with a maximum power of generally over 70%, and some products can reach over 90% (iron core motors are generally around 7%)
2. Handling characteristics: agile starting and braking, extremely fast response, mechanical time constant less than 28 milliseconds, some products can reach within 10 milliseconds (iron core electric)
Motivation is generally over 100 milliseconds; In the recommended operating area, it is easy to adjust the rotational speed flexibly during high-speed operation.
3. Dragging characteristics: The operation stability is very reliable, and the speed fluctuation is very small. As a micro motor, its speed fluctuation can be easily controlled within 2%.
In addition, the energy density of hollow cup motors has significantly improved, with a reduction in weight and volume of 1/3-1/2 compared to iron core motors of equal power.
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Hollow cup electric motors overcome the technical barriers that cannot be overcome by iron core motors, and their outstanding features focus on the main functions of the motor, making
It has a wide range of applications. Especially with the rapid development of industrial skills, higher hopes and requirements are constantly being put forward for the servo characteristics of electric motors, making them more efficient
The heart cup motor has an irreplaceable position in many usage scenarios.
The use of hollow cup electric motors has rapidly expanded from military and high-tech fields to large-scale industrial and civilian fields over the past decade, especially in industrial development
Da Guo has now involved most professions and many products.
1. A responsive system that quickly responds to demands. Quick adjustment of missile flight direction, follow-up control of high magnification optical drive, rapid active focusing, and highly dynamic recording
Hollow cup electric motors can well meet the skill requirements of detection equipment, industrial robots, bionic prosthetics, etc.
2. Products that require stable and durable driving components. Such as various portable instruments and meters, personal equipment, field operation instruments and equipment, electric
Vehicles, etc., with the same set of power sources, the power supply time can be extended by more than twice.
3. Various flying objects, including aviation, aerospace, model aircraft, etc. By utilizing the advantages of lightweight, small size, and low energy consumption of hollow cup electric motors, the maximum reduction can be achieved
The weight of a lightweight aircraft.
4. Various civilian electrical appliances and industrial products. Using a hollow cup motor as the executing component can improve the product's level and provide superior functionality.
5. Taking advantage of its high energy conversion power, it can also be used as a generator; Utilizing its linear operating characteristics, it can also be used as a speed measuring generator; Equipped with a reducer,
It can also be used as a torque motor.
With the advancement of industrial skills, various mechanical and electrical equipment have strict skill requirements for servo motors, and now hollow cup motors have higher and higher skill requirements
The scope of use of the product has completely broken away from the limitations of high-end products and is rapidly expanding to include low-end products such as general civilian use, in order to widely improve product quality
Quality. According to relevant data, hollow cup motors have been maturely used in over 100 civilian products in industrialized countries.
The outstanding functions of hollow cup motors in the domestic industrial sector have not been fully recognized, which has hindered the technological progress of many categories of electromechanical products and seriously affected our cooperation with the country
The skill competitiveness of similar products. Many new products developed domestically have always had an overall level that is inferior to similar foreign products due to their motor functions not meeting the requirements
The significant gap has constrained the development and development of many products, such as medical devices, prosthetics, robots, cameras, cameras, and some special categories, even in textile machines
This phenomenon exists in various aspects such as machinery and laser measuring instruments. However, the production of hollow cup motors, due to their complex process, is far less automated than that of iron core motors
Motivation leads to high production costs, high labor costs, and high requirements for the skill level of operators. Bringing many difficulties and constraints to large-scale production. China's Air Force
The development and research of heart cup electric motors have a history of 20-30 years, but it was not until recent years that they have been rapidly developed. Not only have they replaced imported products in the domestic market, but they have also.
Enterprises are starting to participate in international market competitions.
