J. Dirba
Riga Technical University
16 Papers
44 Citations
J. Dirba is an academic researcher from Riga Technical University. The author has contributed to research in topics: Synchronous motor & Electric motor. The author has an hindex of 3, co-authored 16 publications.
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Papers
Comparison of permanent magnet synchronous motor and synchronous reluctance motor based on their torque per unit volume
L. Lavrinovicha,J. Dirba +1 more
- 11 Jun 2014
TL;DR: In this paper, the equivalence determination of the brushless synchronous motors based on their torque per unit volume in power range from 1 kW to 2.5 kW is discussed. And the optimal designs of the studied motors are found for correct comparison with the help of synthesized analytical relationships between torque and main dimensions of the motor magnetic circuit (also known as metamodels).
25
Prospects for Use of Synchronous Reluctance Motors in Low-Power Electrical Devices
TL;DR: In this paper, the synchronous reluctance motors with a segmental external rotor were investigated and compared with low-power commutator motors, and it was concluded that synchronous motors in this mode can provide a wide range of characteristics and are quite competitive with commutators.
10
Metamodel for permanent magnet synchronous motor with outer rotor
J. Dirba,L. Lavrinovicha,Gints Jekabsons,Sandra Vitolina +3 more
- 11 Jun 2012
TL;DR: In this article, a meta-model synthesis method based on numerical calculations of magnetic field of an electric machine is presented. But the method of finite elements is applied for numerical calculations, and metamodelling method Adaptive Basis Function Construction is used for generating corresponding polynomial.
5
Synthesis of Electronically Commutated Synchronous Motors with Predefined Characteristics
TL;DR: In this paper, the authors present a methodology for the calculation and optimisation of regulation laws that apply to electronically commutated synchronous motors with predefined characteristics, such as supply voltage, excitation current and load angle.
Magnetostrictive Vibration Model for Evaluation of Mechanical Integrity of Power Transformer Magnetic Core
TL;DR: In this article, a magnetostrictive vibration model is proposed for improved evaluation of the mechanical integrity of magnetic core and the finding of possible mechanical defects, based on the simulation of magnetstrictive vibrations by replacing the magnetic core with mass and spring system.