Permanent Magnet Direct Drive Motor | XICHENG
Permanent magnet direct drive motors are the result of a deep integration of permanent magnet synchronous motor technology and direct drive transmission structure. Their core feature is “rotor permanent magnet excitation + no intermediate transmission components”, which directly transmits the motor torque to the load, completely eliminating traditional transmission devices such as gearboxes, couplings, and belts. They are the core solution for “high efficiency, precision, and low maintenance” in the field of industrial drives.
Specifications
| Category | Electric Motors, Permanent magnet motor,Direct drive |
|---|---|
| Frame size mm | H 160 – H 225 |
| KW | 18.5 kW – up to 55kW |
Voltage | 380V |
| Noise | 65-67 dB(A) |
| Rated speed | 1500(rpm) |
| HZ | 100Hz / Built-in frequency converter drive |
| Applications | Blowers, water pumps, compressors, transmission devices, etc. |
| Certification | GB30253-2013″Energy Efficiency Limits and Energy Efficiency Grades for Permanent Magnet Synchronous Motors” – Level 1 |
Permanent Magnet Direct Drive Motor| XICHENG
Core working principle of permanent magnet direct drive motor
- Excitation Method: The rotor incorporates high-performance permanent magnets (neodymium iron boron/smarium cobalt), eliminating the need for excitation windings and current. The permanent magnets provide a stable and high-intensity air gap magnetic field, eliminating excitation losses common in traditional motors.
- Transmission Logic: Alternating current is applied to the three-phase stator windings to generate a rotating magnetic field, which meshes synchronously with the rotor’s permanent magnet magnetic field, ensuring the motor speed matches the rotating magnetic field speed (no slip).
- Direct Drive Core: The motor output shaft is rigidly connected directly to the load (pump body, fan impeller, conveyor belt rollers, etc.), eliminating intermediate power transmission links and avoiding transmission gaps, friction, and slippage losses.
Core advantages of permanent magnet direct drive motor
- High Efficiency, Energy Saving, and Loss-Free: Overall efficiency ≥92% (no excitation loss + zero transmission loss), efficiency remains stable above 85% under light load/variable load conditions, annual energy saving rate 15%-25%, meeting IE5 energy efficiency standards;
- Compact and Lightweight Structure:30%-50% smaller volume and 20%-40% lighter weight for the same power, torque density 1.5-2 times (traditional solutions), no need to reserve intermediate transmission space, suitable for space-constrained scenarios;
- Precision, Stability, and Low Noise: Speed regulation accuracy ±1%, positioning accuracy ±0.05mm, no vibration at low speeds (0-50rpm); no gear meshing/belt friction, operating noise reduced by 8-15dB, minimal vibration;
- Extremely Low Maintenance Costs: No wear parts such as gears, belts, and slip rings, reducing failure points by 80%, failure rate reduced by more than 50%, service life 8-15 years (traditional solutions 5-8 years). (Years) No need for regular gear oil changes or coaxiality calibration; Wide range of applications: Strong shock and vibration resistance, supports frequent start-stop and heavy-load start-up, no risk of gear oil leakage, suitable for clean, harsh, unattended and other working conditions.
Permanent Magnet Energy Saving Direct Drive Motor Parameters
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