Design and verification of a hermetic high-speed turbogenerator concept for biomass and waste heat recovery applications

Grönman, Aki; Nerg, Janne; Sikanen, Eerik; Sillanpää, Teemu; Nevaranta, Niko; Scherman, Eero; Uusitalo, Antti; Uzhegov, Nikita; Смирнов, А. В.; Honkatukia, Juha; Sallinen, Petri; Jastrzębski, Rafał P.; Backman, Jari; Pyrhönen, Juha; Pyrhönen, Olli; Sopanen, Jussi; Turunen-Saaresti, Teemu

doi:10.1016/j.enconman.2020.113427

Cited by 13 publications

(2 citation statements)

References 39 publications

(45 reference statements)

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“…Based on industrial AMB-rotor systems presented in the literature (and comfortable control lift off and low frequency operation) a nominal overall force capacity of radial AMBs is selected as 5-7 times the gravity force, e.g., 6.24 in [26]. For vertical rotors this force capacity to rotor weight ratio can be lower, e.g., 1.13 in [27]. The feasible ratio value depends on uncertainties in process modelling, force nonlinearities, actuator and sensor noise and delays, machine assembly, and how they affect robust stability of the closed loop system.…”

Section: Sensormentioning

confidence: 99%

Design Space Method for Conceptual Design Exploration of High Speed Slitted Solid Induction Motor

Kurvinen

Choudhury

Narsakka

et al. 2021

2021 IEEE International Electric Machines &Amp; Drives Conference (IEMDC)

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Design of High Speed (HS) electric machines is an iterative process that requires a multidisciplinary design team to accomplish the required performance. In this study, a design space method (DSM) is developed to streamline conceptual designing of a high-speed and high-power electric machine. The method uses analytical equations and a rotordynamic model to determine geometrical dimensions based on the application requirements. These dimensions create a feasible baseline design for the particular application. However, considering the dimensions as design variables and using the baseline design as a starting point, a multidimensional combination and interaction of the design variables and the correlated output for the particular topology of motor and performance range can be further studied for design exploration and optimization purposes. The study includes a test case where the baseline dimensions are determined and compared to an existing machine from literature, and then further explored to identify the sensitivity of different outputs with respect to different design variables. The method enables rapid design iterations, rotordynamics and rotor mass optimization. The baseline design can be also used as a starting point for the detailed design.

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Section: Sensormentioning

confidence: 99%

Design Space Method for Conceptual Design Exploration of High Speed Slitted Solid Induction Motor

Kurvinen

Choudhury

Narsakka

et al. 2021

2021 IEEE International Electric Machines &Amp; Drives Conference (IEMDC)

Self Cite

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“…Industrial steam turbine has an advantage in various production processes that need both power and heat, which can achieve the purpose of energy‐saving. The industrial steam turbine has high speed and a wide range of power applications, the speed can be as high as 20 000 r/min and the power can be more than 10 MW 22 . The drum is one of the most important pieces of equipment in the boiler, 23 which is the connection hub of boiler heating, vaporization, and superheating.…”

Section: Aspen Plus Simulation Modelmentioning

confidence: 99%

Development of integrated technology for waste heat recovery from humid flue gas of hot water boiler

Cui

Gao

2021

Int J Energy Res

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Summary For coal‐fired hot water boilers, we developed a comprehensive waste heat recovery system coupled with a packed tower, industrial steam turbine, and absorption heat pump, which can directly reduce the auxiliary power consumption, realize energy cascade utilization, and waste heat recovery. The ASPEN Plus software was used to simulate the packed tower, absorption heat pump, and industrial steam turbine system. The design parameters of the system were obtained and the operation characteristics of the system under load rates of 25%, 50%, 75%, and 100% were investigated, the feasibility of steam subsystem transformation was also analyzed. Taking a 140 MW coal‐fired boiler as an example, in the range of 25%~100% load rate, the direct energy saving can reach 118 to 523 kW∙h, the waste heat recovery power is 2.7 to 11.4 MW, and the coal saving can reach 374 to 1605 kg/h, resulting in energy and resource consumption reduction effect, the system also has CO2 and pollutant emission reduction effect. The RadFrac model can be used in packed tower design, the system can work well under variable load conditions.

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Stability Analysis of Rotor Motion in Nonlinear Systems with Passive and Active Magnetic Bearings

Martynenko

2021

Advanced Structured Materials

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Design and verification of a hermetic high-speed turbogenerator concept for biomass and waste heat recovery applications

Cited by 13 publications

References 39 publications

Design Space Method for Conceptual Design Exploration of High Speed Slitted Solid Induction Motor

Design Space Method for Conceptual Design Exploration of High Speed Slitted Solid Induction Motor

Development of integrated technology for waste heat recovery from humid flue gas of hot water boiler

Stability Analysis of Rotor Motion in Nonlinear Systems with Passive and Active Magnetic Bearings

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