TMdrive-10e2 SPR
The TMdrive-10e2 SPR Slip Power Recovery Drive System for Wound Rotor Motors belongs to the TMdrive-10e2 family of low-voltage system drives designed to lower the cost of ownership with numerous space-saving and maintenance features.
Efficient Power Recovery for Wound Rotor Motors
The TMdrive-10e2 Slip Power Recovery (SPR) Drive enhances the efficiency of systems using wound rotor motors by operating at a high power factor with minimal harmonics. It recovers and returns power to the grid when running below base speed, significantly reducing energy consumption. Additionally, the drive supports operation above synchronous speed—boosting throughput within mechanical limits—and serves as an ideal retrofit solution for outdated current source SPR systems.
With the TMdrive-10e2 SPR, wound rotor motors have entered the 21st Century offering:
- PWM converters
- High power factor operation
- High reliability
- Low cost of ownership
TMdrive-10 Features and Benefits
Design Feature
- Based on Standard Drive – Standard TMEIC low voltage drive hardware is applied for use as a wound rotor motor drive.
- High Power Factor, Low Harmonic Utility Interface – Source converter feeding power back into utility operates at unity power factor.
- Low Harmonic Currents in Rotor Circuit – PWM converter connected to rotor provides sinusoidal current to rotor.
- Latest Drive Control Technology – Based on current production drive control hardware and firmware.
- Heat Pipe Cooling Technology – The cabinet-based IGBT power bridges use heat pipe cooling technology.
- Precise control of wound rotor motor while not wasting energy
Customer Benefit
- Proven TMdrive-10 hardware with supported spare parts
- High power factor and low harmonics reduce current and improve voltage stability
- Minimal rotor heating and smooth torque from sinusoidal rotor current
- Advanced control for precise operation and modern diagnostics
- Compact cooling designreduces space and audible noise
- Direct torque control without requiring motor slip increase
- Recovers slip power below synchronous speed for energy savings
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