Difficulties faced by drone ESCs
Drone electronic speed controllers (ESCs) are the core hub connecting the flight control system and the power motor, and undertake the key task of efficiently converting the battery DC power into the energy required by the three-phase AC motor. Its performance directly determines the response speed, flight stability and power output efficiency of the drone.
However, the large motor starting current impact and strict space restrictions are the current challenges faced by drone ESCs. The internal selection of capacitors with strong ripple current resistance and small size is the key solution to these two challenges.
Core advantages of liquid aluminum electrolytic capacitors LKM
Reinforced lead structure design
Drone ESCs face the challenge of large starting surge current, and the current carrying capacity of the lead is extremely high. YMIN LKM series liquid aluminum electrolytic capacitors adopt a reinforced lead structure design, which can fully meet customers’ stringent requirements for large current/high surge current.
Low ESR
This series has ultra-low ESR characteristics, which can significantly reduce the temperature rise and power loss of the capacitor itself, and effectively absorb the high-intensity ripple current generated by high-frequency switching during ESC operation. This further improves the instantaneous discharge capability of the system, thereby quickly responding to the instantaneous mutation demand of motor power.
Small size and large capacity
In addition to the above advantages, the LKM series’ large capacity and small size design is the key to breaking through the “power-space-efficiency” triangle contradiction of drones, achieving lighter, faster, more stable and safer flight performance upgrades. We provide the following capacitor recommendations, which you can choose according to your specific needs:
Summary
YMIN LKM series liquid aluminum electrolytic capacitors have the advantages of reinforced lead structure, ultra-low ESR and high capacitance density. They provide solutions to the problems of surge current, ripple current impact and space limitation for drone electric speed controllers, enabling drones to achieve leaps in response speed, system stability and lightweight.
Post time: Jul-11-2025