International Rectifier (IR) in El Segundo, Calif., is offering the IRMCT3UF1, an integrated high-reliability hybrid motor control module enabling digital, sensor-free vector control of permanent magnet motors. Based on IR’s iMotion integrated design platform, the module combines digital control, analog interface, and power stage, streamlining time-to-market and increasing design flexibility to accommodate drive system changes in high-reliability applications. “Compared to complex DSP- or microprocessor-based solutions that require position sensors and sophisticated programming, the iMotion platform simplifies motor control design for aerospace systems,” says Michael Toland, pPower modules product marketing manager of International Rectifier’s HiRel products. The module can be configured to specific applications using the iMotion ServoDesigner tool that facilitates drive parameter modification via memory-mapped registers. The control functions are contained in a preconfigured Motion Control Engine, and its algorithm accommodates motor parameter variation for compatibility with brushless DC and permanent magnet AC motors, while creating robust field-oriented control. The IRMCT3UF1 provides speed and torque control without commutation or position sensors. Optimized sinusoidal current control enables current startup sequencing and low loss space vector pulse-width modulation for smoother startup and minimized torque ripple for maximum motor efficiency. For more information contact International Rectifier online at www.irf.com.
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