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Permanent Magnet Direct Drive (PMDD) Motor Used in Biofermentation & Pharmaceutical Industry

Case Study

160kW 380V Permanent Magnet Direct-Drive Motor in Biopharmaceutical Mixing

Location	China National Medicines Vitom (Group) Co., Ltd.
Application	Low-Speed Mixer for Biopharmaceutical Production
Motor Type	Permanent Magnet Synchronous Direct-Drive Motor (PMSM)

Project Overview

China National Medicines Vitom upgraded its traditional gear-driven mixer with a 160kW 380V low-speed permanent magnet direct-drive motor, achieving superior mixing homogeneity, energy savings, and sterile compliance in critical biopharmaceutical processes.

Key Specifications

Motor Power	160kW
Voltage	380V
Speed Range	15–160 RPM (precisely adjustable for viscosity changes)
Efficiency Class	IE5 (Ultra-Premium)
Protection Level	IP66 (dust-tight & resistant to high-pressure cleaning)

Why Permanent Magnet Direct-Drive?

✅ Energy Savings: 25–35% lower power consumption vs. gear-driven systems by eliminating transmission losses.
✅ Contamination-Free: No lubricants or gearbox particles, no oil leaking issues.
✅ Precision Control: speed stability ensures uniform cell culture/suspension mixing.
✅ Silent Operation: <65 dB noise level, reducing workplace disruption.

Measured Performance Benefits

• Energy Reduction: 20% lower kWh consumption.
• Maintenance Savings: Zero gearbox maintenance cuts downtime by
• Product Quality: Mixing CV (coefficient of variation) improved from 8% to <2%.
• ROI Period: 18 months via energy and maintenance savings.