Electronic Commutation Motor Control TRIZ Cases
- Inverter Gate Driver Noise Reducer for Staggered Switching EMI Control
See how RC delay circuits stagger three-phase switching noise occurrence times to reduce EMI ov
- Device and method for sensing a rotational position of a rotatable element, control device, sensor system for determining a rotational position of a rotatable element and household appliance
See how a capacitive stator-rotor sensor eliminates ground surface and wire routing to detect r
- Multi-Motor Inverter Control Using Time-Shared AD Sampling Circuit
See how staggered time-division sampling through a single AD circuit enables low-cost MCUs to c
- Washing machine
See how a rotor with dual-coercivity magnets adapts motor torque and speed for washing and dehy
- Pulse width modulation method
See how loop-forming voltage vector integration generates compressor motor preheating heat whil
- Washing Machine Motor Startup Using Sensorless Rotor Rest Position
Stored rotor rest position and EMF-based sensing enable smooth washing machine motor startup without position sensors or jerky motion.
- Centralized Motor Control Circuit for Simpler HVAC Drive Systems
A single MCU-based controller drives multiple HVAC motors without separate motor controllers, cutting circuit overlap, cost, and heat buildup.
- Inverter PWM Timing Control for Fast Load Variation Response
Pre-detecting DC current before PWM calculation improves inverter response to high-speed load changes and helps prevent step-out and overcurrent.
- DC Power Supply Capacitor Balancing for Stable Load Drive
Capacitor-based voltage balancing suppresses series-capacitor unbalance, stabilizes load drive, and extends capacitor life in DC power supplies.
- Outdoor AC Driver Power Switching for Low-Standby Operation
Selective power cutoff to compressor and fan drivers cuts outdoor AC standby energy while keeping the control board ready for restart.
- Switched Harmonic Correction Inductor for Lighter Power Circuits
A switching device disconnects the inductor during peak current demand, cutting harmonic-filter size, weight, cost, and energy loss.
- Compressor Drive Circuit for Constant Power and Noise Control
Voltage-current feedback trims PWM duty to hold compressor input power, cutting noise and overload shutdown risk.
- Washer Drum Motor Torque Estimation With Adaptive Linear Parameters
A laundry drum estimator uses RMS motor current and adaptive linear parameters to improve torque accuracy without complex calibration.
- Compressor Stall Detection via Driving Circuit Temperature Rise
Temperature rise in the driving circuit is used to detect compressor stalls quickly, preventing overcurrent damage with lower power use.
- PMSM Control Circuit for Load-Adaptive Washing Machine Start-Up
Load-adaptive field-oriented control cuts washing machine motor start current, reducing energy use and overheating during stop-start cycles.
- Cryocooler Driver Circuit Using Tracking Buck Converters
Tracking synchronous buck converters generate sinusoidal motor drive voltages for a cryocooler while cutting H-bridge headroom loss and heat.
- Blower Inverter Control for Automatic HVAC Airflow Commissioning
Motor parameters are modeled to calculate airflow and automatically set blower speed, cutting HVAC commissioning time and manual adjustment.