Industry
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Permanent Magnet Direct Drive (PMDD) Pulley Used in Pulp & Paper Industry
Project Overview
| Customer | Hongta Renheng (Pulp & Paper Industry) |
| Location | Guangzhou City |
| Application | Refiner Pulper System |
| Retrofitted Solution | 800kW, 6kV PMDD Motor |
Challenge with Traditional Pulper Drives
The original system relied on gearboxes or belt-driven motors, which posed critical inefficiencies:
❌ High Maintenance – Frequent lubrication and belt/pulley replacements required.
❌ Oversized Motors – Conventional motors must be upscaled to handle high startup torque, resulting in low-load operation (<50% efficiency).
❌ Energy Waste – Underloaded motors operate at poor efficiency (≤80%), increasing electricity costs.
Our Solution
• Eliminated Gearbox/Belt – Maintenance-free design with zero mechanical transmission losses.
• Optimized for High Torque – Delivers 200% starting torque without motor oversizing.
• High Efficiency (≥96%) – Maintains peak performance even at variable loads.
Performance Results
| Metric | Traditional Drive | PMDD Motor | Improvement |
| Energy Consumption | 100% (Baseline) | 75–80% | ↓ 20–25% |
| Maintenance Cost | High (gearbox/belt) | Near-zero | ↓ 90% |
| System Efficiency | ≤80% | ≥96% | ↑ 16%+ |
Customer Benefits
• Proven Energy Savings – Reduced power costs by ¥[320,000]/year (calculated based on 24/7 operation/800kW).
• Reliability – No gearbox failures or belt slippage issues.
• Space Optimization – Compact design freed up floor space.
Technical Specifications
| Power | 800 kW |
| Voltage | 6 kV |
| Starting Torque | 200% rated torque |
| Cooling | IC411 (Air-to-air) |
Onsite video
Related Industries
Tel: +86-400-686-9980
Address: No. 108, Changtang Road, Wujin District, Changzhou, Jiangsu, China