 DSP solutions from third parties SASL adds V.34 data modem to software line Postal sorting application uses LSI Linescan Module Active noise control silences aircraft cabins IAT bases high-definition video on 'C80 Aircraft starter/generator control uses Pentek boards Open DSP telephony platform arrives Affordable computer telephony for small businesses Portescap provides DSP motion control solution |
Aircraft starter/generator control uses Pentek boardsWhen General Electric and Sundstrand Aerospace needed to replace a two-unit aircraft motor/generator set with a single-unit motor/generator, they designed the control solution with TMS320C30-based boards from Pentek. The resulting switched-reluctance motor/generator reduced weight, lowered cost and increased reliability. The 6-phase motor/generator, wired as two 3-phase machines and driven by twin identical 125 kW inverters, is rated at 250 kW at 270 V and 22,224 RPM. Six Pentek 4283 'C30 Processor MIX Baseboards and six GE-designed I/O MIX modules are used to control the six phases of the motor/generator set over the VMEbus. "Each of these Phase Lag Controllers (PLCs) is responsible for inverter-switch timing, current regulation, and data feedback," said Peter Sanza, Electrical Engineer at GE 's Corporate R & D Center, Schenectady, NY. In addition, two Pentek 4284 'C40 Processor MIX Baseboards provide the power needed to act as global- system controllers. "Each global controller supervises half of the motor and is responsible for the torque production algorithms, the voltage regulation in generator mode, and the phase coordination and sequencing." Since the switched-reluctance motor is brushless, it can go on the same shaft as the jet engine with the added benefit of eliminating the gearbox. Once the jet engine is operating under its own power, the switched-reluctance motor becomes a generator, supplying the aircraft 's electric power. |