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130
Ritscher
Brushless DC Motors (BLDC) are synchronous electric machines powered by DC voltage but functionally driven by AC waveforms generated via electronic commutation. Key components include:
Stator: Typically a laminated core with polyphase windings (3-phase most common).
Rotor: Permanent magnets (e.g., NdFeB, SmCo) creating the field flux.
Controller: Uses PWM-driven inverter circuits (6-step or FOC control) and feedback (Hall sensors/back-EMF) for precise phase switching.
Performance Metrics:
Torque Ripple: Minimized via sinusoidal or trapezoidal current profiling.
Efficiency: Up to 90–95% (vs. ~75–80% in brushed motors) due to reduced I²R losses.
Dynamic Response: Suited for servo applications with high bandwidth control loops.
Emerging Trends:
Sensorless Control: Observer algorithms (e.g., Kalman Filters) for cost reduction.
Integrated Motor Drives (IMD): Embedding power electronics into motor housings.
Environmental Requirement：
Cooling method: Natural cooling or air cooling
Work environment: No dust, oil mist and corrosive gas
Work temperature :-10ºC~+45 ºC
Humidity: <80%RH, noncondensable, and unfrosted
Storage: -20 ºC~+105 ºC, protected from dust in intact packages
Brushless DC Motors (BLDC) are synchronous electric machines powered by DC voltage but functionally driven by AC waveforms generated via electronic commutation. Key components include:
Stator: Typically a laminated core with polyphase windings (3-phase most common).
Rotor: Permanent magnets (e.g., NdFeB, SmCo) creating the field flux.
Controller: Uses PWM-driven inverter circuits (6-step or FOC control) and feedback (Hall sensors/back-EMF) for precise phase switching.
Performance Metrics:
Torque Ripple: Minimized via sinusoidal or trapezoidal current profiling.
Efficiency: Up to 90–95% (vs. ~75–80% in brushed motors) due to reduced I²R losses.
Dynamic Response: Suited for servo applications with high bandwidth control loops.
Emerging Trends:
Sensorless Control: Observer algorithms (e.g., Kalman Filters) for cost reduction.
Integrated Motor Drives (IMD): Embedding power electronics into motor housings.
Environmental Requirement：
Cooling method: Natural cooling or air cooling
Work environment: No dust, oil mist and corrosive gas
Work temperature :-10ºC~+45 ºC
Humidity: <80%RH, noncondensable, and unfrosted
Storage: -20 ºC~+105 ºC, protected from dust in intact packages
