Industry
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Permanent Magnet Direct Drive (PMDD) Motor Used in Power Industry
Case Study
| 90kW 380V IP67 Permanent Magnet Direct-Drive Motor in Cooling Tower |
|
Applications
| Location | Henan Province, China (2022) |
| Industry | Power Plant Cooling Systems |
| Motor Type | Permanent Magnet Synchronous Direct-Drive Motor (PMSM) |
Project Overview
A major power plant in Henan Province upgraded its traditional induction motor-driven cooling tower fans with 90kW 380V IP67-rated permanent magnet synchronous direct-drive motors, achieving significant energy savings, reduced maintenance, and improved reliability in harsh outdoor conditions.
Key Specifications
| Motor Power | 90kW |
| Voltage | 380V |
| Protection Rating | IP67 (dustproof & waterproof) |
| Efficiency Class | IE5 (ultra-premium) |
| Speed Range | 0–300 RPM (variable frequency control) |
Why Permanent Magnet Direct-Drive?
✅ 30%+ Energy Savings – Eliminates gearbox losses and operates at near-unity power factor (>0.95).
✅ Zero Mechanical Wear – No belts, couplings, or gearboxes, reducing maintenance costs by 50%.
✅ High Reliability in Harsh Conditions – IP67 protection ensures resistance to dust, moisture, and temperature fluctuations.
✅ Precision Speed Control – Optimizes airflow for cooling efficiency while reducing motor load fluctuations.
Measured Performance Benefits
• Energy Consumption Reduction:32% compared to the previous induction motor system.
• Maintenance Cost Savings:Over CNY 50,000/year due to elimination of gearbox lubrication and belt replacements.
• Uptime Improvement:99.5% operational reliability since installation (18+ months).
• ROI Period: Achieved in less than 2 years through energy savings alone.
Onsite video
Related Industries
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Address: No. 108, Changtang Road, Wujin District, Changzhou, Jiangsu, China