Generator Control Circuits TRIZ Cases

A wind turbine controller detects sub-synchronous resonance oscillations in power output to trigger protective shutdowns.

A grid-side converter switches to series compensation mode during faults.

Controller uses converter to send diagnostic signals to rotor and stator, identifying winding faults without external hardware or manual inspection.

The synchronous speed avoidance controller prevents rotor frequency near zero, reducing thermal stress on power semiconductors and avoiding oversized component costs.

Dynamic gain adjustment maintains converter control during islanding, preventing overvoltage damage before safe shutdown.

Series damping circuit with bypass switch attenuates rotor current spikes, enabling low voltage ride through capability for double fed induction generators.

A control system predicts future DC link voltage values using current feedback and rate of change calculations to enable proactive protection.

Segmented converter stages reduce thermal stress and costs by enabling variable-frequency operation without full-power rating requirements.

A controller actively adjusts an active filter to mitigate turbine harmonics, ensuring grid code compliance under varying operating conditions.

Adjust rotor-side converter switching frequency based on generator speed to maintain reactive power output.

Segmented shorting devices use rotor inductor impedance to balance current, reducing contactor size and cost.

Elevated gate voltage increases current conduction in power converter switching elements during grid disturbances.

Switching the inner converter off during zero output periods reduces core losses and heat generation in isolation transformers.

Adjustable switching frequency and output current control reduce junction temperature variations, preventing mechanical stress on inverter bond wires.

A wind turbine generator controller reduces the speed limit when wind drops below a threshold to optimize tip-speed-ratio.

A brushless doubly fed induction starter generator uses direct current excitation in stator control windings to produce magnetic flux for power generation.

A three-phase wound rotor modulates magnetic field rotation to control generator voltage and frequency using low-power signals.

A variable speed wind power generation system regulates generator output through independent active and reactive power control channels.

Hybrid energy storage modules combine rotating inertial and electrochemical units to buffer transient recovery voltage during high-power pulsed load operations.

Reduces IGBT thermal stress and harmonic distortion by lowering switching frequency near synchronous speed.

A control system allocates reactive power between a doubly-fed induction generator and its line side converter using a dynamic priority ratio.

Parallel active filter cancels overmodulation harmonics, reducing energy loss and component wear.

An adaptive control algorithm dynamically adjusts proportional and integral gains based on measured short circuit ratio.

A control device distributes reactive current between rotor-side and grid-side converters in a doubly fed asynchronous generator.

A flywheel doubly-fed electric machine transfers kinetic energy directly to an electric motor phase coil.

Parallel high and low bandwidth filters classify islanding versus non-islanding events, preventing equipment damage during high-voltage grid disturbances.

Segmented switching modules in a matrix configuration reduce converter cost and thermal stress while enabling variable frequency operation.

A wind generation system lowers rotor cut-in speed by adjusting converter DC link voltage setpoints and transformer turn ratios.

Regulating rotor speed in doubly fed induction generators maintains voltage within converter limits while increasing power output at reduced wind speeds.

An auxiliary converter couples to the stator winding of a doubly-fed generator to manage power flow across a shared DC bus.

Segmenting the converter system allows grid-side units to sit at the tower base, balancing nacelle weight while lowering maintenance safety risks.

A wind turbine generator controller switches between constant reactive power and constant power factor regulation modes to manage grid support.

A variable gain current regulator adjusts damping based on rotor speed to stabilize power generation systems.

A fault detection system measures phase voltages in a doubly-fed induction generator wye-ring to identify structural defects.

A dual bridge rotor side converter uses controlled and uncontrolled current conducting bridges to optimize power conversion design.

A grid-side crowbar circuit creates a short circuit path to protect wind turbine electrical components from damage.

A wind turbine electrical system switches between resistive and storage elements on a DC link to manage electromagnetic torque during grid faults.

A STATCOM control arrangement combines active power reference signals with reactive power commands to generate weighted output.

A series grid side converter scales stator magnetic flux during voltage sags, reducing transient currents and torque spikes in doubly fed induction generators.

Control device adjusts generator voltage amplitude and phase to synchronize with system voltage before closing bypass breaker.

A controlled impedance device couples between stator windings and grid converters to regulate current during faults.

Rotating inverter controls generator field windings via electronic power line communication to produce constant frequency output.

A modular control system segments command variable generation to adapt torque and reactive power settings for grid compliance.

A three-phase four-wire grid-side converter maintains balanced voltage under unbalanced loads while automatically synchronizing stator and system voltages.

Decoupling generator and motor speeds through partial power processing reduces power electronics weight while enabling independent fan speed control.

A Kalman filter and state feedback controller generate a damping signal applied to the rotor converter.

Dynamic braking system detects negative sequence components to orient voltage, reducing DC bus disturbances and protecting equipment during grid transients.

Dual stator windings with a rotor-mounted inverter replace slip rings, eliminating mechanical failure points while maintaining variable speed control.

Relocating main transformers to the down tower reduces nacelle weight and structural complexity in wind turbine systems.

A synchronous generator excitation system uses a selector device to reconfigure rectifier connections between series and parallel modes.