• Journal of the Korea Institute of Information and Communication Engineering
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• v.6 no.6
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• pp.879-884
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• 2002

There are screw, reciprocating and turbo compressor by structure in an air compressor, essential equipment on he industrial spot. Resently it is wide that the range of turbo compressor's use in gradual, turbo compressor needs high speed rotation of impeller in structure, high rated gearbox and conventional induction motor. This mechanical system increased the moment of inertia and mechanical friction loss. Resently the study of turbo compressor applied super high speed motor and drive, removing gearbox made its size small and mechanical friction loss minimum. In this study we tried to develope variable super high speed motor drive systems for 150Hp, 70,000rpm drect drive Turbo compressor. The result of study is applied to a 150Hp direct turbo compressor and makes it goods.

• Journal of the Institute of Electronics Engineers of Korea SC
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• v.40 no.4
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• pp.225-234
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• 2003

Turbo compressors need high speed rotating impeller in structure, high rate gearbox and conventional induction motor. This mechanical system increased moment of inertia and mechanical friction loss. Recently turbo compressor has adopted a super high-speed motor and driver and have made its size smaller and mechanical friction loss at minimum. In this paper, variable super high - speed motor controller, compressor controller and MMI controller are implemented with only one DSP (TMS320VC33) chip for a 150HP, 70,000rpm direct drive turbo compressor. It was required hardware and software integration. The result of integration, Controller hardware became simple and all control software are developed same developing tool. The implements turbo compressor meets the requirements.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.6 no.6
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• pp.885-890
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• 2002

Turbo compressor needs high speed rotation of impeller in structure, high rated gearbox and conventional induction motor. This mechanical system increased the moment of inertia and mechanical friction loss. Resently the study of turbo compressor applied super high speed motor and drive, removing gearbox made its size small and mechanical friction loss minimum. In this study we tried to develope variable super high speed motor controller, compressor controller and MMI controller under one DSP based systems for 1500Hp, 70,000rpm direct drive Turbo compressor. It have to do unitification of each controller"s hardware and software. The result of study is applied to a 150Hp direct turbo compressor and makes it goods.oods.

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 1999.10a
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• pp.26-26
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• 1999

소·중형 산업용 항공기나 초등 훈련기용으로 많이 이용되고 있는 터보프롭 엔진의 성능진단을 위해 선형 GPA 기법을 적용하였다. 대기조건은 지상정지조건으로 하였으며 계측변수의 선정에 따른 오차율을 알아보기 위해 다양한 손상을 가정하였다. 가스터빈 엔진에서 가장 쉽게 발견될 수 있는 성능저하 원인인 압축기 오염과 터빈 부식이 발생하였을 경우를 가정하였다. 다중 손상일 경우 선형 GPA 기법의 신뢰성을 알아보기 위해 압축기에만 오염이 발생하였을 경우, 압축기와 압축기 터빈에 각각 오염과 부식이 발생하였을 경우, 압축기 터빈과 동력터빈에 동시에 부식이 발생하였을 경우, 압축기, 압축기 터빈, 동력터빈이 모두 오염과 부식이 발생하였을 경우를 가정하였다.

• Transactions of the Korean Society of Mechanical Engineers B
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• v.39 no.1
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• pp.89-95
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• 2015

A surge phenomenon cause noise and pulsations in a turbo compressor, which is an unstable operating regime. Because surge protection ensures a safe compressor operation, it is important to understand the physics of the surge phenomenon. In this study, the surge characteristics of a 250-hp class turbo-compressor were evaluated experimentally. The experimental parameters were the rotational speed, opening angles of the inlet guide vane and exit valve, and inlet pipe diameter and flow rates of the inlet gases. The results showed that the compressor surge was very sensitive to the gas flow rates, exit pressure, rotational speed, and bypass flow rates.

• 유체기계공업학회:학술대회논문집
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• 2003.12a
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• pp.315-322
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• 2003

High performance turbo compressor, Turbo Master, was successfully developed by applying combined technology and experience based on aero gas turbine engines. The Turbo Master, developed using our own technology, was designed for high performance and reliability And the Turbo Master will supply absolutely oil-free compressed air to your facilities. In special, a next-generation micro compressor was lately developed, using air foil bearing and high speed motor known as the latest high technology.

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2000.11a
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• pp.40-40
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• 2000

터보기기에서 압축기를 통과한 공기는 압력이 증가하지만 온도가 따라서 증가하여 여러 단을 거쳐 높은 압축 비를 요구할 경우에는 압축기의 단단 사이에 열교환기 (intercooler)를 장착하여 다음 단으로 유입되는 공기의 온도를 낮추고 공기 중에 섞여있는 수분을 제거함으로써 터보기기의 전체적인 효율을 상당히 증가시킬 수 있다.(중략)

• The KSFM Journal of Fluid Machinery
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• v.1 no.1 s.1
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• pp.113-120
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• 1998

• 유체기계공업학회:학술대회논문집
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• 2003.12a
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• pp.482-486
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• 2003

A high-efficiency turbo steam compressor has been successfully developed for the MVR desalination system, first one in Korea. The state-of-the-art design methods using real gas properties were applied to get all the aerodynamic design results. Bull and pinion gear trains, tilting-pad bearings and investment cast impellers were developed also to be integrated into the integral gear-driven turbo steam compressor. System tests show highly efficient performance.

• Journal of the Institute of Electronics Engineers of Korea SC
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• v.40 no.1
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• pp.45-54
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• 2003

Turbo compressor needs high speed rotation of impeller in structure, high rated gearbox and conventional induction motor. This mechanical system increased the moment of inertia and mechanical friction loss. Resently, the study of turbo compressor applied super high speed motor and drive, removing gearbox made its sire small and mechanical friction loss minimum. This paper describes the implementation of the vector control schemes for a variable-speed 131㎾ PMSM(Permanent Magnet Synchronous Motor) drive in super-high speed application.