Introduction
A listed electric forklift manufacturer reported that its products experienced machine stalling, restarting, and MOSFET burnout under complex operating conditions (such as frequent start-stop cycles and sudden load changes). The original solution used ordinary aluminum electrolytic capacitors, which overheated severely under high-frequency, high-ripple current surges, resulting in a rapid decline in lifespan and insufficient energy buffering capacity of the power system to support the instantaneous power demands of the motor drive.
LKE Solution and Advantages
From an electrical principle perspective, frequent speed changes and steering of the motor generate extremely high-frequency ripple currents and transient current surges. Ordinary aluminum electrolytic capacitors, due to their excessively high ESR, experience severe heat loss under high-current conditions, leading to increased core temperature, electrolyte dehydration, decreased capacitance, and premature death. This failure mechanism directly causes fluctuations in the supply voltage, resulting in control system resets or damage to power devices.
- YMIN Solutions and Process Advantages -
YMIN’s LKE series 105°C 10,000-hour liquid aluminum electrolytic capacitors achieve breakthroughs through four core technical parameters:
Ultra-low ESR: Utilizing high-conductivity electrolytes and advanced etching processes, high-frequency impedance is reduced by over 30%, effectively controlling heat loss.
High Ripple Current Tolerance: Ripple current withstand capability is increased by 30%-50%, meeting the extreme operating conditions of motor drive boards.
Fast Transient Response: Low internal resistance design and optimized electrode structure ensure charge and discharge are completed within microseconds, stabilizing the bus voltage.
Long-Term Reliability: Lifespan reaches 10,000 hours at 105°C, verified through accelerated aging tests, synchronized with the overall system lifespan.
- Data Verification and Reliability Explanation – Through comparative testing and waveform analysis, the YMIN LKE series performs exceptionally well:
Temperature Rise Comparison: Casing temperature rise is reduced by over 20°C, with significantly better thermal stability than competing products.
Ripple Suppression: Bus ripple voltage reduced by 40%, significantly improving system noise suppression capabilities.
Endurance Verification: No failures after 10,000 hours of full-load cycle testing.
- Recommended Model -
Suitable for high-frequency, high-ripple applications such as electric forklift motor drive boards and electric engineering vehicle controllers. Recommended models: LKE series (63V 470μF, 100V 470μF), whose low ESR, high ripple resistance, and long lifespan have made them the industry’s preferred choice.
Conclusion
With the mission of “For capacitor applications, turn to YMIN,” YMIN continuously challenges the technological barriers of international brands through high-performance products such as the LKE series, helping Chinese intelligent manufacturing move towards global leadership. Choose YMIN, choose reliability.
Post time: Nov-05-2025