WPower electronics
WCold ironing
WHolding current (electronics)
WInsulated-gate bipolar transistor
WJoule thief
WMagnetic amplifier
WMOS-controlled thyristor
WMotor soft starter
WPLECS
WPower module
WPower MOSFET
WSafe operating area
WSilicon controlled rectifier
WStatic synchronous series compensator
WSwitched-mode power supply
WSynchronverter
WThyristor
WTRIAC
WVienna rectifier
WVoltage controller
WVoltage spike