Electronic Commutation Motor Control TRIZ Cases
- Motor Device Constant Air Flow Control via Proportional Current
A motor device maintains constant air flow by controlling q-axis driving current proportional to rotation speed.
- Partial-Angle Position Transmission for Drive Systems
Segmented position transmission reduces bandwidth while enabling early safety actions through model-based reconstruction of coarse values.
- Hybrid Solar Motor Drive Inverter with Mode Switching
A hybrid inverter switches between grid-tied and off-grid modes to deliver conditioned power to motors.
- Vehicle Drive System Intermediate Circuit Voltage Control
A vehicle drive system adjusts intermediate circuit voltage based on detected speed to optimize energy flow.
- Modular Reconfigurable Polyphase Transformer Core
Nested modular windings on a reconfigurable core reduce wire consumption and inventory complexity for variable frequency drives.
- Inverter Control Offset for Motor Efficiency Stability
An inverter control system offsets detected voltage and rotational speed to stabilize operation.
- Floating Frame Controller for Sensorless Power Factor Adjustment
A floating reference frame controller adjusts the current Park vector angle to set power factor without rotor sensors.
- Switched Reluctance Machine Control via Periodic Energization
Periodic phase energization reduces switching frequency in switched reluctance machines, lowering losses while maintaining efficient torque production.
- Arm Fuse Melting Detection in Inverters Without Micro Switches
A power conversion apparatus detects arm fuse melting using ripple current calculations from DQ converted motor currents.
- Rotor Position Offset Detection Using Voltage Current Analysis
Detect rotor position offset using voltage and current analysis to eliminate maintenance downtime while ensuring accurate torque production.
- Resonant Controllers Mitigate Harmonic Resonance in Subsea Cable Drives
Parallel resonant controllers compensate for dominant harmonics in long cable transmission, reducing resonance excitation and extending component lifetime.
- DC Motor Control Circuit for Vibration Suppression
A motor control circuit adjusts coil current amplitudes based on induced voltage differences to ensure smooth rotation.
- Motor Parameter Estimation Using Adaptive Digital Filtering
Adaptive digital filtering extracts motor inductance from noisy current signals, enabling optimal control loop tuning and accurate fault detection.
- Rotor Temperature Determination via Stator Flux Saturation Saliency
Analyzing stator flux saturation saliency angles enables accurate rotor temperature estimation in electric induction machines without physical sensors.
- Harmonic Current Injection for Torque Enhancement in Permanent Magnet Motors
A drive system injects triple-frequency harmonic currents into a stator winding to generate axial torque from rotor magnetic fields.
- MOSFET Chopper Controller for Single-Phase Induction Motor Noise Reduction
High-frequency chopping smooths the voltage waveform, eliminating harmonic noise generated by triac control.
- Sensorless DC Fan Speed Controller Using Back-EMF Calibration
A sensorless DC fan speed controller adjusts PWM signals using back electromotive force measurements to maintain target motor speeds.