| Overview |
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L&T has acquired expertise
in design, system engineering, manufacturing and commissioning
of Slip Power Recovery Systems in the Indian industry with
over 100 installations..
Continuous improvements achieved on working installations
have helped us to offer you an efficient and reliable SPRS
with several key features.
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| What
is SPRS ? |
Slip Power Recovery System
(SPRS) is a variable speed drive for slip ring induction motors.
It recovers and delivers the slip* dependent rotor power from
the motor to the grid.
At changeover speed, SPRS is connected to the rotor and the
rotor resistance is disconnected.
The diode rectifier converts the rotor voltage to DC voltage.
This rectified rotor voltage is counter-balanced by a line commutated
inverter.
By controlling the ‘counter-balancing’ inverter voltage, the
rotor current, hence rotor speed is regulated. The slip power
collected at the slip rings is fed back to the grid through
the inverter. |
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| Advantages
of L&T SPRS |
Slip Power Recovery System
(SPRS) provides :
• Lower operating costs by slashing energy bills
• Enhanced life of mechanical equipment by reducing vibrations
• Accurate process control with excellent speed holding accuracy |
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