Torque Ripple Control TRIZ Cases
- Motor driving apparatus and air conditioner including the same
See how a motor driving apparatus reduces harmonics using voltage detection and a harmonic redu
- Actuator with an electric motor and a method of controlling the electric motor to maintain a current position
See how an HVAC actuator controller identifies cogging-torque stable positions and applies peri
- Method of operating a motor coupled to a mechanical load
See how fluctuating speed demand control stabilizes DC bus voltage in motors with varying mecha
- Motor Speed Control to Stabilize DC Bus Voltage Under Fluctuating Load
See how fluctuating speed demand reduces power variations in motors coupled to mechanical loads
- Electric Motor Actuator Position Holding Using Cogging Torque
See how a motor controller uses pre-determined stable cogging-torque positions to maintain actu
- Synchronous motor driving device, blower, and air conditioning device
See how selective motor activation resolves hunting and current pulsation in parallel-driven br
- Motor driving apparatus and refrigeration cycle equipment
See how inverter control achieves zero current during minimum torque phases to switch motor win
- Drive device for AC motor, compressor drive device, and refrigeration cycle device
See how parallel adaptive estimation units suppress high-frequency speed pulsations in sensorle
- Method for operating an electric motor of a compressor of a heat pump, com-puter program, storage medium, controller, and heat pump
See how determining compressor counter-torque and compensating motor torque offset reduces vibr
- Apparatus for driving compressor of air conditioner and method for driving the same
See how phase compensation angles stored in tables reduce compressor speed ripple caused by non
- Method for operating a compressor
See how harmonic torque compensation regulates compressor motor speed to cancel periodic load v
- Power conversion device and refrigeration cycle apparatus
See how a segmented booster circuit with two independent switching elements and an intermediate
- Method of operating a variable speed motor in a laundry treatment apparatus
See how dynamic switching between continuous and discontinuous PWM modes reduces inverter heat
- Synchronous motor drive device, air-sending device and air-conditioning device
See how selective motor connection and dynamic switching timing resolve low-speed instability i
- Motor control device
See how average deviation feedback corrects target d-axis current to suppress peak current puls
- Electric Machine Winding Control for High-Speed Back-EMF
By varying advance and freewheel angles with speed, this control keeps electric machine power steady and avoids current spikes at high rpm.
- Permanent Magnet Motor Control for Sensorless Startup Transition
Estimator convergence checking enables reliable open-loop to closed-loop transition and fault signaling in sensorless permanent magnet motors.
- BLDC Ventilation Feedback Control for Air Flow and Energy Balance
Current-based voltage compensation lets a BLDC ventilation unit maintain rated air flow while limiting power use to meet Energy Star requirements.
- Electric Machine Winding Control for Back-EMF Power Stability
Adjusting advance and freewheel angles with speed keeps electric machine current smooth and power stable as back emf rises.
- Motor Drive Gain Control for Hall Signal Quality Without Power Loss
Automatic gain control on Hall rotor-position signals preserves S/N ratio while avoiding detection-resistor power loss in large motor drives.
- Variable-Speed Motor PWM Switching for Laundry Inverter Heat Control
Temperature-based switching between continuous and discontinuous PWM cuts inverter board heat in laundry motors while preserving control.