Motor Winding Overview

The design of the motor winding directly affects the electrical performance and thermal management capability of the drone motor. It is a key part of the FPV drone power system. Understanding the types and characteristics of windings is crucial for selecting the right motor and ensuring the stable operation of the drone frame. As a professional manufacturer, UFOUAV optimizes winding designs for different drone components to match various FPV flight needs.

Single-Strand vs Multi-Strand Windings

Single-Strand Winding

Single-strand winding uses a single thick enameled wire to wind the stator, which is widely used in high-power uav motor applications.

Advantages:

• Low DC resistance, ensuring efficient current transmission
• Strong current-carrying capacity, suitable for high-power FPV drone applications
• Less heat generation during operation, better thermal stability
• Ideal for high-power drone components and heavy-load flight scenarios

Disadvantages:

• Large eddy current loss at high frequencies, affecting efficiency
• Difficult to wind, requiring professional winding equipment
• Relatively high cost compared to multi-strand windings

Multi-Strand Winding (Litz Wire)

Multi-strand winding uses multiple thin enameled wires (Litz wire) wound in parallel, which is a common choice for FPV drone motors.

Advantages:

• Reduces skin effect at high frequencies, lowering eddy current loss
• Easier to wind, suitable for small and medium-sized uav motor
• Lower cost, more cost-effective for mass production
• Good flexibility, not easy to break during drone frame installation

Disadvantages:

• Slightly higher DC resistance than single-strand windings
• Requires more insulating materials, increasing motor weight slightly
• Higher welding difficulty, requiring professional operation to avoid short circuits

Winding Wire Gauge

The wire gauge of the winding is usually expressed in AWG (American Wire Gauge), and the common specifications for FPV drone motors are as follows, which are closely matched with the drone components and drone frame:

• 20AWG: Thick wire, suitable for high-current, low-KV uav motor, matching large drone propellers
• 22AWG: Standard gauge, suitable for most FPV drone motors, balancing current-carrying capacity and weight
• 24AWG: Thin wire, suitable for small motors and lightweight drone frame setups

Impact of Wire Gauge:

• Thick wire: Low resistance, high current-carrying capacity, suitable for low-KV motors and large drone propellers
• Thin wire: High resistance, low current-carrying capacity, suitable for high-KV motors and small FPV drone setups

Winding Methods

The common winding methods for FPV drone motors are Delta (Δ) and Y (star) connection, which directly affect the motor’s power output and compatibility with drone components:

1. Delta Connection: High power output, high efficiency, suitable for high-voltage battery configurations (such as 6S), matching the drone frame and drone propellers for racing scenarios.
2. Y (Star) Connection: Lower voltage requirement, suitable for low-voltage battery configurations (such as 3S/4S), with stable performance and low heat generation, ideal for daily FPV flight.

UFOUAV Brand Advantage

UFOUAV optimizes the winding design of each uav motor according to the FPV drone application scenario, matching thedrone frame and drone propellers of different specifications. The windings are strictly tested to ensure low loss, high efficiency and long service life, providing reliable power support for your FPV flight experience.

Read more at Custom Industrial Drone Solutions, UAV Payload Manufacturer & Supplier|UFOUAV