Speed Control for Turbine-Generator of ORC Power Generation System and Experimental Implementation

Hyung-Seok Park, Hong-Jun Heo, Bum-Seog Choi, Kyung Chun Kim and Jang-Mok Kim
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Hyung-Seok Park: Department of Electrical Engineering, Pusan National University, Busan 46241, Korea
Hong-Jun Heo: Department of Electrical Engineering, Pusan National University, Busan 46241, Korea
Bum-Seog Choi: Korea Institute of Machinery & Materials, Daejeon 34103, Korea
Kyung Chun Kim: School of Mechanical Engineering, Pusan National University, Busan 46241, Korea
Jang-Mok Kim: Department of Electrical Engineering, Pusan National University, Busan 46241, Korea

Energies, 2019, vol. 12, issue 2, 1-13

Abstract: This paper presents a rotation speed estimation and an indirect speed control method for a turbine-generator in a grid-connected 3-phase electrical power conversion system of an organic Rankine cycle (ORC) generation system. In addition to the general configuration mechanism and control techniques that are required in the grid-connected ORC power generation system, the indirect speed control method using the grid-side electric power control and the speed estimation method is proposed for the proper speed control of turbine-generators. The speed estimation method utilizes a digital phase-locked loop (PLL) method that uses a state observer to detect the positive-sequence voltages. A 10 kW system where a Motor-Generator set is used as a turbine simulator and a 23 kW actual system for the grid-connected ORC power generation were designed and manufactured, respectively. This paper includes various experimental results obtained from field tests conducted on actual installed ORC systems.

Keywords: generator speed control; electrical power generation; turbine and generator; grid-connected converter; organic Rankine cycle; renewable energy (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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