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| Approach | Aim | Location of application | Method of application | Examples | Methodology |
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| Control | Keep WECS within operation constraints without additional components or devices | Control system | Software | Virtual resistance/inductance | Increased resistance and inductance in virtual rotor circuit results in decreased rotor currents and their decay times |
| Supplementary rotor current (SRC) controller | Introduces a multiplication factor to the measured rotor currents effectively reducing the control variable to within acceptable limits |
| Flux damping/demagnetization | Rotor current controlled to counteract the stator flux negative sequence and DC components of flux |
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| Hardware | Maintain WECS within operational limits by addition of components | Rotor | Shunt | Active crowbar,
passive crowbar | High currents shunted through dissipating resistors |
| Series | Series dynamic braking resistor (SDBR) | High currents passed through dissipating resistors |
| DC-link | Shunt | Braking chopper | Charging currents passed through dissipating resistors |
Energy storage systems (ESS), for example, battery (BESS),
energy capacitor storage (ECS),
superconducting magnetic energy storage (SMES) | Excess energy stored for later release during system deficit |
| Stator | Series | SDBR | Added resistance reduces fault currents to within limits |
| Series antiparallel thyristors | Provide quick disconnection of stator circuit to interrupt stator flux oscillations |
Dynamic voltage restorer (DVR),
series grid side converter (SGSC) | Maintain stator terminal voltage at nominal values by injecting voltage |
| PCC | Series | Flexible AC transmissions systems (FACTS) devices such as static synchronous series compensator (SSSC), DVR | Maintain voltage at PCC nominal values by injecting voltage |
| Shunt | FACTS devices such as static synchronous compensator (STATCOM), static Var compensator (SVC), SMES | Maintain voltage at PCC nominal values by injecting reactive power during sags.
SMES also draws reactive power during swells |
| Hybrid | FACTS devices such as unified power flow compensator (UPFC) | Combined action of series and shunt connected FACTs devices as given above |
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