Pump with residual magnetism attenuation

A pump, comprising:

• a fluid inlet section;
• a fluid outlet section;
• a stator axially between the fluid inlet section and the fluid outlet section and including:
• a plurality of radially inwardly extending legs;
• a plurality of electrical windings disposed about the plurality of radially inwardly extending legs and arranged to be connected to an electrical power source;
• a rotor axially between the fluid inlet section and the fluid outlet section, the rotor and the stator defining a fluid flow space radially therebetween;
• a movable inlet guide configured for guiding fluid flow from the fluid inlet section into the fluid flow space;
• a movable outlet guide arranged to guide fluid flow from the fluid flow space into the fluid outlet section;
• and,
• an attenuating circuit including:
• a capacitor electrically wired in parallel with a first electrical winding of the plurality of electrical windings;
• and,
• a switch electrically connected to the capacitor, wherein:
• the first electrical winding is wound about a first radially inwardly extending leg of the plurality of radially inwardly extending legs;
• the rotor is arranged to be rotated inside of the stator by energization of the plurality of electrical windings;
• during the energization of the plurality of electrical windings:
• the switch is arranged to electrically connect the capacitor to an electrical ground;
• and,
• the electrical power source is arranged to create a voltage in the capacitor;
• and,
• following a de-energization of the plurality of electrical windings:
• the switch is arranged to electrically isolate the capacitor from the electrical ground;
• and,
• the capacitor is arranged to discharge the voltage through the first electrical winding.