Magnetic field generation device and molten metal drive system

A magnetic field generation device comprising:

• a plurality of iron cores each having first to sixth magnetic poles and arranged at gaps from each other;
• first and second coils for energizing an R-phase current;
• third and fourth coils for energizing an S-phase current;
• and
• fifth and sixth coils for energizing a T-phase current, wherein
• a plurality of the first magnetic poles included in the plurality of iron cores is arranged along a predetermined direction to constitute a first magnetic pole group,
• a plurality of the second magnetic poles included in the plurality of iron cores is arranged along the direction to constitute a second magnetic pole group,
• a plurality of the third magnetic poles included in the plurality of iron cores is arranged along the direction to constitute a third magnetic pole group,
• a plurality of the fourth magnetic poles included in the plurality of iron cores is arranged along the direction to constitute a fourth magnetic pole group,
• a plurality of the fifth magnetic poles included in the plurality of iron cores is arranged along the direction to constitute a fifth magnetic pole group,
• a plurality of the sixth magnetic poles included in the plurality of iron cores is arranged along the direction to constitute a sixth magnetic pole group,
• the first coil is wound around the first magnetic pole group,
• the second coil is wound around the second magnetic pole group,
• the third coil is wound around the third magnetic pole group,
• the fourth coil is wound around the fourth magnetic pole group,
• the fifth coil is wound around the fifth magnetic pole group, and
• the sixth coil is wound around the sixth magnetic pole group.