A variable speed drive with a converter that is controllable to precharge
a DC link is provided. The variable speed drive also includes an
inverter. The converter converts a fixed line frequency, fixed line
voltage AC power from an AC power source into DC power. The DC link
filters the DC power from the converter. Finally, the inverter is
connected in parallel with the DC link and converts the DC power from the
DC link into a variable frequency, variable voltage AC power. The
converter includes a plurality of pairs of power switches, wherein each
pair of power switches includes a reverse blocking power switch
arrangement connected in anti-parallel to another reverse blocking power
switch arrangement. Alternatively, each pair of power switches includes a
reverse blocking power switch connected in anti-parallel with a silicon
carbide controlled rectifier.