Verdicorp’s technologies are based on the globally accepted oil-free Turbocor compressor technologies:

Magnetic bearings and bearing sensors:

Composed of both permanent and electromagnets with unique, patented design for compact size and reliable high performance enables precisely controlled frictionless shaft rotation on a levitated magnetic cushion. Bearing sensors, located at each magnetic bearing, feed back rotor orbits and thrust/axial information in real time to bearing controller

Permanent-magnet synchronous motor:

Powered by PWM (pulse width modulated) voltage supply. High-speed variable frequency operation affords high efficiency, compactness and soft start benefits

Touchdown Bearings:

Radially and axially located bearings support the rotor when the machine is not energized and prevents contact between rotor and other metallic surfaces

Shaft and impeller:

Only one major moving component acts as rotor for permanent-magnet synchronous motor. The impeller is keyed directly to shaft

 Variable Frequency Drive:

IGBT (Insulated Gate Bipolar Transistor) is a bi-directional device that converts DC voltage into an variable three-phase AC voltage and vice versa. Signals from the motor/bearing controller determine the inverter output frequency, voltage and phase, thereby regulating the motor speed converts mechanical energy back into electrical energy. In the case of Power failure, this patented control scheme allows for a normal de-levitation and shutdown

Soft start module:

Significantly reduces high in-rush current at startup, providing advantages to line power systems and reducing thermal stress at the stator. The startup in-rush current is less than 2 amps vs. typically up to 1,000 amps experienced by traditional compressors in the same capacity range—truly defining soft starts

Electronic package:

Rectifiers convert AC line power into a high voltage DC power source. Capacitors for smoothing DC power supply. DC-DC Converters for supply and isolation of high and low voltage DC voltages. Network connections for external controls and monitoring of the PWM amplifier for powering the electromagnetic bearings and the motor are microprocessor controlled.


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