Coreless motors help small drones fly more efficiently

Driven by modern technology, small drones have become important tools for many industries such as aerial photography, mapping, security, and logistics. Among all components, the motor is the core power source for drone flight, which directly affects flight performance, control stability, and flight time. This article will explore the working principle of small drones and analyze the key role of motors in it.

 

 

The operation of a small drone mainly relies on the motor to drive the propeller to rotate, thereby generating lift and thrust, allowing the drone to fly stably in the air. The whole process can be roughly divided into the following stages:

 

1. Takeoff phase: providing lift

When the battery powers the motor, it rotates at high speed, driving the propeller to generate downward airflow, thereby forming upward lift. When the lift is greater than the gravity of the drone itself, the drone can take off.

 

2. Hovering and attitude control: precise adjustment of rotation speed

The drone can hover stably in the air thanks to the precise adjustment of each motor by the Flight Control System (FCS). When the speed of all motors is the same, the drone remains stable; when the speed of a motor is adjusted, attitude control such as tilt and steering can be achieved.

 

Forward/Backward: Increase the speed of the rear motor to make the drone fly forward; increase the speed of the front motor to make it fly backward.

 

Move left or right: Increase the speed of the motor on one side to make the drone move in the opposite direction.

 

Rotation (Yaw): Clockwise or counterclockwise rotation is achieved by the difference in the diagonal motor speeds.

 

3. Acceleration and cruising: motor efficiency determines endurance

During flight, the energy consumption of the motor directly affects the flight time of the drone. Efficient motors can reduce energy loss, improve flight stability, and enable the drone to maintain stable flight for a longer period of time.

 

4. Landing: Gradually reduce power

When the drone needs to land, the motor speed gradually decreases, reducing the lift and finally landing smoothly. The intelligent flight control system will accurately control the motor during landing to ensure a safe landing and avoid crashing.

 

 

As the core component of the UAV power system, the quality and performance of the motor are crucial. As China's leading micromotor manufacturer, VSD has been deeply involved in the motor industry for decades, focusing on the research and development and customization of brushed motors, brushless motors and Coreless Motors. The company has a modern manufacturing plant of over 10,000 square meters, equipped with more than 40 automated production lines, more than 300 high-precision production equipment, and dozens of experienced R&D engineers. With strong technical strength and innovation capabilities, VSD is committed to providing high-performance motor solutions for the UAV industry.

 

Drone development trend

Drone technology has achieved rapid development in recent years, and its design has gradually evolved towards miniaturization, lightweight and intelligence, allowing consumer drones, micro drones and other products to enter the mass market.

 

Aerial photography drones: improved image quality and longer battery life, suitable for travel, film shooting, live broadcasting and other fields.

 

Racing drones: breaking the speed limit and more precise control, becoming a new hot spot in competitive sports.

 

Industrial and security drones: used for inspection, monitoring, rescue, etc., to reduce labor costs and improve work efficiency.

 

With the development of UAV technology, the demand for motors has become more stringent, and efficient, lightweight, low-noise, and low-power power systems have become the key. Among them, coreless motors have gradually become the ideal power choice for small UAVs due to their excellent performance.

 

 

In the application of small drones, traditional motors are difficult to meet the requirements of modern drones for light weight, high efficiency and low power consumption due to their large size, high inertia and high energy consumption. The emergence of Coreless Motors has completely changed this situation.

 

Advantages of Coreless Motors

Extremely light weight, reducing the burden of flying

The coreless motor removes the iron core structure of the traditional motor and adopts a lightweight design, which reduces the overall weight of the drone and thus increases the flight time.

 

Instantaneous response to improve flight stability

Since there is no hysteresis and eddy current loss of the iron core, the Coreless Motor has extremely small rotational inertia and extremely fast response speed, making the drone's attitude adjustment more precise and the control more sensitive.

 

High energy efficiency ratio, low power consumption

The energy conversion efficiency of the coreless motor is as high as over 85%, which reduces the waste of electricity and allows the drone to fly longer with limited battery capacity.

 

Low noise, less distraction

Compared with traditional motors, Coreless Motors run more smoothly and have lower noise, making them ideal for demanding drone applications such as aerial photography and reconnaissance.

 

 

In recent years, with the development of precision manufacturing technology and material science, the performance of Coreless Motors has been continuously optimized, and their application in the field of small UAVs has become more extensive.

 

Materials with higher magnetic flux density: Using high-performance NdFeB magnets to increase the power density of the motor, allowing the drone to have stronger power in a smaller size.

 

More advanced winding technology: Optimized precision winding technology reduces the copper loss of the motor and improves the overall efficiency.

 

Intelligent control system: Combined with digital drive technology, the motor can more accurately adapt to the flight status of the drone, improving stability and safety.

 

Customized motor solutions: In the future, VSD will continue to provide high-performance, customizable Coreless Motor solutions to meet the needs of different types of drones.

 

 

VEC - 1630 Coreless Motor

The VEC - 1630 coreless motor is a high-performance motor with ultra-high speed, low inertia and low noise. Its non-cogging design ensures smooth operation and fast response. It supports 12V and 24V specifications, with a maximum no-load speed of 37,411 rpm and a maximum efficiency output power of 21.153W. It is suitable for medical equipment, precision instruments, robots and other application scenarios that require high efficiency and precise control. The output shaft, lead wires, mounting holes, voltage, speed and other parameters can be customized according to the needs to meet specific application requirements.

 

VEC - 2838 Coreless Motor

VEC - 2838 Coreless Motor has the advantages of extremely fast response, low vibration and low noise, and adopts high-quality ball bearings to ensure long life and stable performance. Its 24V version has a no-load speed of up to 92,000 rpm and an output power of up to 51.742W at maximum efficiency. It is suitable for high-speed transmission systems, medical equipment, drones, precision instruments and other fields. The lightweight design and high compatibility make it an ideal choice, and personalized customization such as output shaft, lead, terminal, speed, voltage, etc. can be provided to optimize system integration and performance.

 

VEC - 19mm Series Coreless Motors

VEC - 19mm series Coreless Motors include three sub-series: EC1930, EC1935 and EC1946. The body length is optional from 30mm to 46mm, suitable for a variety of power requirements. The motor has the characteristics of fast response, low noise, long life, and supports 6V, 12V, 24V voltage configuration, and the maximum power output can reach 25.7W. It is widely used in robots, automation equipment, medical instruments and other fields, and supports bearing, encoder, size and interface customization to meet precision control needs.

 

With the rapid development of the drone industry, the optimization of the power system is crucial. VSD Coreless Motors provide excellent power support for drones with their high efficiency, light weight and low noise. If you have any needs for drone motors, please contact us for customized solutions!