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Design Features • State-of-the-art digital power conditioning pro- vides three output choices: (1) built-in synchro- nous AC with built-in protective relay functions, (2) stand alone AC output (optional), and (3) DC output (also optional). • Popular configurations are UL 2200 listed. • Patentedairbearingseliminatetheneedforoilor other lubricants. • Air cooled design of the entire system (engine and controller) eliminates the need for liquid coolants. • Only one moving part in the engine. No gears, no belts, and no engine-driven accessories. • Advanced combustion control eliminates the need for ceramics or for other costly materials and for catalytic combustion. • An integral annular recuperator (or heat exchanger), doubles thermal efficiency. • Digital control technology facilitates advanced control, monitoring, and diagnostic capabilities, both onboard and remote (RS-232 link). Gas Microturbine The microturbine power plant is a combustion turbine which includes a compressor, a recuperator, a combustor, a turbine, and a generator. The rotating components are mounted on a single shaft supported by air bearings and spin at up to 96,000 RPM. The permanent magnet generator is cooled by the airflow into the microturbine. The output of the generator is variable voltage, variable frequency AC power. The generator is used as a motor both during start-up and during cooldown cycles. Controller The Digital Power Controller (DPC) controls the microturbine system operation and all subsystem operations. The DPC performs power conversion functions, while converting variable frequency power from the generator to DC voltage and then to constant frequency AC current or variable voltage DC current. During start up, the DPC operates as a variable frequency drive, and motors the generator until power is available from the microturbine. The DPC again operates as a drive during cooldown to dissipate heat stored in the recuperator and engine structure in order to protect the various engine components. Fuel Systems The microturbine includes an integral fuel delivery and control system. The standard system is designed for pressurized gaseous hydrocarbon based fuels. Other models are available for low pressure gaseous fuels, gaseous fuels with lower heat contents, gaseous fuels with corrosive components, and liquid fuels. Enclosure The Capstone MicroTurbine Standard Enclosure is an award-winning distinctive and functional design that permits side-by-side installation of multiple individual systems without impacting serviceability. The standard enclosure is for indoor or outdoor use, and is designed to Type 3R, UL 50. A lighter weight Capstone Industrial Enclosure (also Type 3R) with a more conventional appearance is available for more environmentally severe applications in which side-by-side installation is not needed. The Open Package version is suitable for integration into single or multiple system skid-mounted enclosures which may also include fuel treatment and/ or heat recovery equipment. Capstone components for OEM use may be provided with or without a microturbine mounting frame. Battery System The Capstone MicroTurbine when equipped with the Stand-alone Option, includes a large battery used for unassisted start and for transient electrical load management. The system includes an inverter and battery management system which keeps the battery optimally charged. The battery is a lead-acid type, completely sealed and maintenance free. System Design Features System Operation 2 511715-002PDF Image | CAPSTONE MICROTURBINE MODEL 330 SYSTEM MANUAL
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