Electric driven hydraulic fracking operation

A variable frequency drive (VFD) cabin, comprising:

• a cabin housing, the cabin housing comprising an air intake port and an air exhaust port;
• a transformer mounted in an interior of the cabin housing, wherein the transformer is configured to transform electric power at an initial voltage to electric power at a transformer voltage, wherein the initial voltage is within a medium-voltage voltage range, and wherein the transformer voltage is within a low-voltage voltage range;
• a power cell assembly mounted in the interior of the cabin housing and connected with the transformer, wherein the power cell assembly comprises a plurality of power cells and is configured to convert electric power at the transformer voltage to electric power at a VFD voltage, wherein the VFD voltage is within a third medium-voltage voltage range;
• and
• a ventilation system, comprising:
• a filtration unit positioned at the air intake port;
• at least one intake blower configured to draw air into the cabin housing via the air intake port and the filtration unit at an intake flowrate;
• at least one exhaust blower configured to expel air from the cabin housing via the exhaust port at an exhaust flowrate;
• and
• a ventilation control system configured to control operation of the at least one intake blower and the at least one exhaust blower such that the intake flowrate exceeds the exhaust flowrate to thereby create an overpressure condition within the cabin housing.