AC Motor Control TRIZ Cases

Inverter tracks photovoltaic maximum power point using electric motor rotational frequency to determine Perturb and Observe step direction.

An integrated flow path structure cools capacitor module sides and bottoms, reducing heat generation in power conversion apparatuses.

H-bridge circuit detects electric current and zero points using internal voltage signals, eliminating external sensing resistors to reduce component count.

Variable cross-section lug sections on a single adapter reduce inductance and assembly complexity for drive systems.

Interposing dummy modules between semiconductor elements increases DC bus bar inductance, suppressing surge voltages and enabling faster switching speeds.

A control device estimates rotor position using neutral point potentials from dual three-phase windings connected to separate inverters.

Dynamic carrier frequency adjustment reduces eddy-current losses and prevents permanent magnet demagnetization under high thermal loads.

A vehicle controller connects an electric vehicle battery to a driving motor field winding for wireless power transfer.

A winding switching device uses a regulating portion to displace conductors away from electrodes during movement.

A bi-stable switch connects a discharge resistor to the high-voltage bus, creating a low-impedance path for rapid energy removal.

A hybrid vehicle inverter generates a phase-opposite harmonic voltage instruction to cancel counter-electromotive force distortions.

Graphical icons replace language-specific text on frequency converters, reducing memory storage needs while maintaining universal operator accessibility.

Distributed control units calculate correction voltages from inter-converter current differences to eliminate imbalance and stabilize output voltage.

A controller compares redundant current sensor values to detect failures and maintain drive power control.

A linear resonance actuator calibration method adjusts the actual sampling frequency to match the device natural frequency.

A magnetic transmission linear positioning platform uses permanent magnets and motor poles to drive motion without mechanical contact.

A controlled current source cancels ground-bound common mode currents, eliminating bulky shielding requirements in electric machine drive systems.

Adjusts d-axis and q-axis current commands based on rotor temperature to optimize electric motor torque output.

Parallel stator windings match pole counts to suppress circulating currents and harmonic losses in railway vehicle main motors.

A brake booster control device filters input rod speed signals to generate precise actuation commands.

A three-phase inverter drives single-phase motors to move a platform along a normal axis with precise positioning.

Stator winding taps enable transformerless transfer from variable speed drives to higher voltage lines, eliminating transients and installation costs.

Segmented covers shield motor connectors and hoses from flying stones, reducing disconnection risks while maintaining compact assembly layout.

A motor controller regulates a DQ voltage vector to drive direct-axis current to zero for permanent magnet synchronous motors.

An invalidation circuit selects determination results from multiple circuits correlated with wire connection states to resolve transistor resistance variations.

A switch with specific input and output channels converts single-phase AC voltage to three-phase AC voltage for motor drives.

A superposed component generator shifts voltage references by ninety degrees to estimate motor magnetic pole positions accurately.

A power inverter control system switches between continuous and discontinuous pulse width modulation strategies to optimize electric drive performance.

A reconfigurable motor system dynamically adjusts pole count and phase configurations using power converters to optimize performance across varying speed conditions.

Inclined coolant channels deliver fluid perpendicular to semiconductor chips, resolving insufficient cooling performance in high-power modules.

Phase Locked Loop estimation suppresses current beats during over-modulation without additional hardware filters.

Generator converts mechanical energy from idle-speed engine into electricity for high-speed propulsion, removing heavy batteries and reducing fuel costs.

Side-by-side placement on a swivel frame lowers the center of gravity, resolving balance issues caused by high-capacity batteries in electric excavators.

A controller updates disturbance estimation constants after carrier frequency switching to maintain accurate current response.

Connecting the DC bus midpoint to the AC neutral point stabilizes voltage under unbalanced loads while reducing component stress.

A motor unit encodes rotation state information into pulse signal duty ratios for external transmission.

A stator winding uses round windings with specific jumper wire straddling amounts to optimize electromagnetic force generation.