This paper shows that high-speed starter/generator system is more efficient for gas turbine engine for mobile auxiliary power unit. The system is rated at 25kW, 325Vdc, 60krpm. The system also provides 4kw to start the 100kW engine. The system consists of a high speed machine directly coupled to the gas turbine engine, a power control unit (PCU), and an electronics controller. The PCU is consist of boost converter that boost from 24V (Battery of Vehicle) to 235V for driving high-speed motor, inverter drive PMSM (Permanent Magnet Synchronous Motor), and buck converter drop the voltage to 28V. For PMSM driving the system applied SVPWM (Space Vector Pulse Width Modulation), sensorless algorithm. And then, to supply optimized power, “Constant Power Control Algorithm” is applied. For the system development, electromagnetic analysis, structure analysis, rotor dynamic analysis, and heat transfer analysis are done. After manufacturing, we have tested the system many times to produce verified performance.

Volume Subject Area:
Microturbines and Small Turbomachinery
Topics:
Gas turbines, Generators, Permanent magnets, Engines, Motors, Algorithms, Batteries, Control algorithms, Control equipment, Dynamic analysis, Electronics, Heat transfer, Machinery, Manufacturing, Pulse width modulation, Rotors, Vehicles
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Copyright © 2004
 by ASME
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