1. Optimization design
Magnetic circuit design optimization: simulate the motor magnetic field distribution through finite element analysis (FEA), optimize the geometry of the magnetic circuit, reduce the discontinuity in the magnetic flux path, and reduce iron loss.
Winding design improvement: use low resistivity wires and reasonable winding layout to reduce copper loss.
Rotor structure optimization: optimize rotor structure parameters (such as pole arc coefficient, permanent magnet angle, etc.) through Taguchi method to reduce torque pulsation and cogging torque.
2. Material selection
High-performance permanent magnet material: select high-performance permanent magnet materials such as neodymium iron boron (NdFeB) to improve the power density and efficiency of the motor.
Low-loss silicon steel sheet: use ultra-thin silicon steel sheet (such as 0.10mm, 0.08mm) to reduce eddy current loss.
High thermal conductivity material: use high thermal conductivity material in the cooling system to improve heat dissipation efficiency.
3. Cooling technology
Efficient cooling system: A well-designed cooling system is the key. Common cooling methods include forced air cooling, water cooling, oil cooling, etc.
Intelligent cooling system: Adjust the cooling power in real time according to the motor operating status to keep the motor temperature within a reasonable range.
Optimize cooling channels: Optimize the cooling channel design through computational fluid dynamics (CFD) analysis to improve cooling efficiency.
4. Control strategy
Advanced control technology: Use advanced control strategies such as vector control and direct torque control to achieve precise control of motor torque and speed.
High-frequency current drive technology: Develop high-frequency current drive technology to improve the dynamic response capability and control accuracy of the motor.
5. Interdisciplinary integration
Multi-physics field coupling design: Comprehensively consider the coupling of multiple physical fields such as electromagnetic field, stress field, rotor dynamics, fluid field and temperature field, and conduct collaborative design.
Software-defined motor: Use software to optimize motor performance and achieve efficiency that hardware cannot achieve.
6. Vibration and noise control
Rotor modal analysis: Perform strict rotor modal analysis, optimize the aspect ratio, and avoid resonance at critical speed.
Electromagnetic force optimization: By optimizing the magnetic circuit design, high-frequency electromagnetic force is reduced and howling is reduced.
7. Bearing technology
Choose the right bearing: Choose magnetic bearings, air bearings or mechanical bearings according to the application scenario to ensure stability during high-speed operation.
