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Capstone Turbine Corporation • 21211 Nordhoff Street • Chatsworth • CA 91311 • USA Application Guide: C30 and C60 Hybrid Electric Vehicle (HEV) Application Information for Capstone The output of the generator is variable voltage, variable frequency AC power. Power electronics convert this to programmable DC power for HEV applications. Electrical power output is Direct Current (DC), into the vehicle's main electrical bus. The purpose of the Capstone MicroTurbine HEV system is to generate DC power in series with the HEV battery. The unit accepts commands from a Vehicle Management System (via a RS-232 connection) and outputs the commanded power. Starting and control power are sourced directly from the high voltage DC bus of the vehicle. For vehicles with nominal battery voltage less than 200 volts DC (Model C30), 300 volts DC (Model C60), an external 12-volt (Model C30) or 25-volt (Model C60) battery supply is required to start the system. Figure 4 shows the basic series hybrid configuration. Figure 4. Basic Series Hybrid Configuration MicroTurbine System Components MicroTurbine Engine The MicroTurbine engine is a combustion turbine that includes a compressor, combustor, turbine, generator, and a recuperator. The rotating components are mounted on a single shaft supported by patented 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. The generator is used as a motor during start-up and cooldown cycles. Air Bearings The MicroTurbine utilizes gas foil bearings (air bearings) for high-reliability, low maintenance, and safe operation. This allows fewer parts and the absence of any liquid lubrication to support the rotating group. When the MicroTurbine is in operation, a gas film separates the shaft from the bearings and protects it from wear. 480009-001 Rev B (October 2004) Page 13 of 54 This information is proprietary to Capstone Turbine Corporation. Neither this document nor the information contained herein shall be copied, disclosed to others, or used for any purposes other than the specific purpose for which this document was delivered. Capstone reserves the right to change or modify without notice, the design, the product specifications, and/or the contents of this document without incurring any obligation either with respect to equipment previously sold or in the process of construction.PDF Image | Application Guide Model C30 and C60 HEV Application Information
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