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The FCMA Soft starter achieves this through a unique system of flux compensated non saturated magnetic amplifier for controlling the motor current and hence. Frequently asked questions about FCMA soft starters. 1. What is the difference between an FCMA and conventional magnetic amplifier or saturable core reactor . Eltech Engineering provides complete starting solutions, slip ring, squirrel cage and synchronous motors, provides services to FCMA soft starters and any other.

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Soft starters have no Hz regulation capabilities. Claims of this technology are zero harmonics in power. Posted by Hitesh Vadnagare at 4: The Soft Starter is connected in series with the motor either on the line side or neutral side and thus controls the starting current and starting torque As the motor speed increases the FCMA impedance decreases to achieve incremental voltage and torque for the motor while keeping the current constant.

The voltage across the motor increases smoothly from starting to run value with motor speed. This paper deals with innovative magnetic soft starters based on flux compensation technology FCMA. Low fault level on neutral side, highly economical, easy retrofitting on existing installations, Can be located near the motor. The soft starter is connected in series with the motor either on the line side or neutral side and thus, controls the starting current and starting torque.

The FCMA is connected in series with the motor either on the line or neutral side, so that the starting current is limited to a low value. An aggregate of approx. Low Voltage compensators are connected to the MC winding and this current is reflected by the Sofg winding into the line high voltage system. As such, sfot is needed for reducing life cycle cost of the entire establishment in terms of capital cost, minimum downtime, and maximum availability.

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With the rugged FCMA technology this could be done without any electronic or moving parts. Flux Compensated Magnetic Amplifier soft starters are step less reduced Voltage starters which ensure a constant low starting current with incremental voltage and torque to the motor to achieve smooth acceleration softt the drive.

FCMA Soft starter

The advantage is to have low voltage compensators which are in a close circuit with the MC winding so immediatly discharged when not used. The Soft starters provide gradual increase in voltage up to rated voltage ensuring even acceleration. To eliminate these harmful effects, Soft Starters are used which reduce the starting current considerably and allow the motor to accelerate gradually.

To further reduce the line current, MC winding could be used. Ramp Dwell period Energy Optimizing These operating stages are as shown in figure below: It is also important to avoid disturbances in the power system in terms of overloading and other harmful effects like voltage and frequency dips and harmonics.

Thanks tambe I will read his over the weekend, mag amps were big things some time ago, then came semiconductors. This aspect is thoroughly tested and certified while testing in India and Europe.

Kanti, your observations are very correct, 20 years back this was staryer only easily manufacturable solution with transformer like structure and cheap. The MC winding is magnetically coupled to the main winding and ER winding. Posted by Hitesh Vadnagare at 3: I talked with manufacturers and find FCMA technology very useful JavaScript is disabled for your browser.

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The bypass device is designed for bypass duty i. Working Principle Sott Compensated Magnetic Amplifier soft starters are step less reduced Voltage starters which ensure a constant low starting current with incremental voltage and torque to the motor to achieve smooth acceleration of the drive. Collections Turbomachinery and Pump Symposia.

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I have never heard or seen this type of starter. This leads to saving in transformer capacity and cost. Abstract Most of the water supply schemes use electrical power in large quantities. Natural Side Soft Starters.

MV / HV FCMA Soft Starter

The goal is to use the reactive power stored in the FCMA module and inject it in line. As the motor speed increases the FCMA impedance decreases due to the counter emf feedback to achieve incremental voltage and torque for the motor startsr keeping the current constant.

Metadata Show full item record. They can boost current and voltage at start, but it’s a voltage boost to initiate movement if the motor bogs at start, after which the boost voltage Blogger integrates with Amazon Assoc