FRENIC4600 Series Medium-voltage direct output inverters Stable control
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The addition of V/f control with simple sensor-less vector control enables stable motor operation during load variations. No speed sensor is required.
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The 32-bit MPU ensures a fast response with high precision.
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For facilities that require speed and torque accuracy, vector control with a speed sensor is also available. (Option)
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With the need for an output transformer eliminated, the overall efficiency of the inverter is improved.
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Fuji Electric's own unique multi-level PWM control reduces switching losses.
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By reducing the number of components used in the main circuit, we have reduced losses in the converter's main circuit.
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The output current is substantially sinusoidal, and this reduces the harmonic losses of the motor.
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The multi-phase diode full-wave rectification allows a high-power-factor operation (approx. 95% or more) on the power supply.
In addition, reduced harmonic current on the power supply side enables harmonic loss to be reduced at the input transformer primary winding.