Naval electric machines

Gieras, Jacek F.

doi:10.1007/978-1-4020-9007-3_9

Cited by 31 publications

(37 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…One of the machines is a disc-type machine and the other is cylindrical-type machine. The axial flux (AF) machines possess a total of different benefits over radial flux machines [5].…”

Section: The Afwr Machinementioning

confidence: 99%

Performance of AFWR Synchronous Motor as Changing from AFWR Synchronous Generator

Multi¹,

Trisno²,

Budiyanto³

2019

Proceedings of the Proceedings of the 1st Workshop on Multidisciplinary and Its Applications Part 1, WMA-01 2018, 19-20 January

View full text Add to dashboard Cite

The tests should be performed for the three phase synchronous generator of Axial Flux Wound Rotor (AFWR) which has been planned and constructed. The tests are also performed for the motor deriving from that AFWR generator. The behavior of the generator and the motor can be known after those testing. Hence, by using one machine, it can be operated for resulting electricity and for rotating mechanic. The load examining is applied for the synchronous machine. The electrical load can be attached to the generator after it is running and the testing output is achieved. Likewise, the mechanical load can be connected to the motor after it is supplied by the power source and the examining outcome is gained. The mesurement in those tests are executed the nominal load. From the testing output of AFWR synchronous generator at rated load having 0.5 mm air gap yielding the efficiency of 61.61% with the rotor voltage of 10.85 V. Whereas, from the examining outcome of AFWR synchronous motor with the terminal voltage 0f 380 V and the field voltage of 9.53 V is attained 73.58%.

show abstract

“…One of the machines is a disc-type machine and the other is cylindrical-type machine. The axial flux (AF) machines possess a total of different benefits over radial flux machines [5].…”

Section: The Afwr Machinementioning

confidence: 99%

Performance of AFWR Synchronous Motor as Changing from AFWR Synchronous Generator

Multi¹,

Trisno²,

Budiyanto³

2019

Proceedings of the Proceedings of the 1st Workshop on Multidisciplinary and Its Applications Part 1, WMA-01 2018, 19-20 January

View full text Add to dashboard Cite

show abstract

“…Under this consideration, it is possible to affirm that the cogging torque can be interpreted as an additional torque disturbance signal respect the electromagnetic torque, dependent to rotor axis position with intensity related to the internal structure of the motor itself (number of pole pairs, teeth geometry, air-gap thickness). Cogging torque is an intrinsic issue related with any kind of synchronous/brushless electric motor as reported in the theory of permanent magnets machine [1,2] and more modern revision of the design procedures for different structure and geometry [3,4]. In this work we consider a classic cylindric geometry with SPM internal structure but our result is not limited to the SPM geometry and can be easily extended to IPM or any kind of synchronous machine changing the dynamic model in order to take care about the differences (as anisotropic effect, saliency of the magnets, etc.…”

Section: Introductionmentioning

confidence: 99%

Design of an Observer-Based Architecture and Non-Linear Control Algorithm for Cogging Torque Reduction in Synchronous Motors

Dini

Saponara

2020

Energies

View full text Add to dashboard Cite

The problem of cogging torque is due to a magnetic behavior, intrinsic to synchronous machines and due to the presence of permanent magnets themselves. Cogging torque is a significant problem when the servo drive is used for applications where high precision in terms of position control is required. In this paper we present a method of cogging torque reduction by means of a control technique based on mathematical modeling of the cogging phenomenon itself in order to exploit this knowledge directly in the controller design. The mathematical model is inserted in the dynamic model of the synchronous machine in order to exploit the feedback linearization, providing an expression of the control law in which the contribution of the deterministic knowledge of the phenomenon is directly present. The cogging phenomenon physically depends on the angular position of the rotor, as well as the deterministic model we use to define the control vector. This makes it interesting and innovative to determine whether the control algorithm can be inserted within a sensor-less architecture, where rotor position and angular velocity measurements are not available. For this purpose, we present the use of an extended Kalman filter (EKF) in the continuous-time domain, discussing the advantages of an observer design based on a dynamic motor model in three-phase and direct-square axes. Results are presented through very accurate simulation for a trajectory-tracking problem, completing with variational analysis in terms of variation of initial conditions between EKF and motor dynamics, and in terms of parametric variation to verify the robustness of the proposed algorithm. Moreover, a computational analysis based on Simulink Profiler is proposed, which provides some indication for possible implementation on an embedded platform.

show abstract

“…The stator windings are connected in series with the upper and lower switches of the inverter. This topology can prevent the shoot through fault that exists in the induction and permanent motor drive inverter [3,4].…”

Section: Introductionmentioning

confidence: 99%