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Smart Induction Motor Variable Frequency Drives for Primary Frequency Regulation
Publication Year: 2020,Page(s):1 - 10
Cited by: Papers (33)
This article proposes an induction motor variable frequency drive to investigate its potential in handling smart grid's frequency. This can thus mitigate the grid reliance on expensive power plants. To this end, a primary frequency controller is presented enabling the drive to reduce its power in proportion to grid frequency drop. The dynamic limitation of the drive due to load's inertia is consid...Show More
Analysis of Synchronverter Self-Synchronization Dynamics to Facilitate Parameter Tuning
Publication Year: 2020,Page(s):11 - 23
Cited by: Papers (21)
This paper proposes a self-synchronizing synchronverter controller design that leverages the addition of a virtual resistance (along with a suitable coordinate transformation) to compute feedback signals during self synchronization prior to grid connection. With respect to analysis, we exploit separation-of-time-scales arguments and develop appropriate reduced-order models, which are well-suited f...Show More
Design, Fabrication, Test, and Benchmark of a Magnetically Geared Permanent Magnet Generator for Wind Power Generation
Anders Byrdal Kjaer;Steffen Korsgaard;Simon Staal Nielsen;Loránd Demsa;Peter Omand Rasmussen
Publication Year: 2020,Page(s):24 - 32
Cited by: Papers (52)
Magnetic gears with an integrated permanent magnet machine provides advantages within the field of wind turbine drive trains compared to both mechanically geared generators due to non physical contact between rotors as well as direct driven generators where size and weight can be reduced. Theoretical and practical benchmark of the technology against commercial direct drive generators with regards ...Show More
Comparative Study on Modular Longitudinal and Transverse Flux-Switching Permanent Magnet Linear Motor
Publication Year: 2020,Page(s):33 - 42
Cited by: Papers (20)
Based on similar single-phase flux-switching permanent magnet linear motor (FSPMLM), a comparable modular longitudinal FSPMLM (LFSPMLM) and transverse FSPMLM (TFSPMLM) are presented and investigated in this article. The modular LFSPMLM and TFSPMLM have no magnetic coupling among modules. Single-phase piecewise-linear inductance models of LFSPMLM and TFSPMLM are proposed, and corresponding comparat...Show More
Sensorless Control of IPMSM Using Moving-Average-Filter Based PLL on HF Pulsating Signal Injection Method
Publication Year: 2020,Page(s):43 - 52
Cited by: Papers (51)
As for the sensorless control of interior permanent magnet synchronous motor (IPMSM), conventional high frequency (HF) pulsating signal injection method is widely used, which uses band-pass filter (BPF) and low-pass-filter (LPF) based phase-locked-loop (PLL), however it may face the problems of poor stability and long convergence time. Therefore, an improved signal demodulation algorithm based on ...Show More
A Universal Blocking-Module-Based Average Value Model of Modular Multilevel Converters With Different Types of Submodules
Xuekun Meng;Jintao Han;Levi M. Bieber;Liwei Wang;Wei Li;Jean Belanger
Publication Year: 2020,Page(s):53 - 66
Cited by: Papers (17)
The large amount of power electronic submodules and semiconductor switching events in the Modular Multilevel Converter (MMC) introduces several challenges for efficient and accurate Electro-Magnetic Transient (EMT) simulation. Research efforts have focused on developing Average Value Models (AVMs) of MMC that enable fast and accurate dynamic simulation of the converter. This paper proposes a unive...Show More
Optimal Evaluation of the Correlative Synchronous Reactance of the d- and q-Axes With Rotor Angle Measurement
Dong-Joon Kim;Young-Hwan Moon;Yong-Hak Kim;Young-Joon Seo;Hae-Kon Nam
Publication Year: 2020,Page(s):67 - 76
Cited by: Papers (1)
This paper describes an optimal method of evaluating the synchronous reactance of the d- and q-axes simultaneously with rotor angle measurement. First, interactions among the variables such as the synchronous reactance of the d- and q-axes, the field current and the rotor angle through magnetic saturation are theoretically reviewed with a standard machine model. Next, with the steady-state test da...Show More
Combined Control of Grid Connected Converters Based on a Flexible Switching Table for Fast Dynamic and Reduced Harmonics
Alireza Jabbarnejad;Sadegh Vaez-Zadeh;Mohammad Jahanpour-Dehkordi
Publication Year: 2020,Page(s):77 - 84
Cited by: Papers (13)
Grid connected voltage source converters are inevitable means now for expanding and supporting power systems. Nevertheless, their harmonic injection and high frequency switching may cause degradation of power quality and detraction of the equipment reliability. Therefore, the converters injected harmonics must observe the corresponding standards, while lower switching frequencies and rapid transie...Show More
Thermal Modeling and Analysis of Active and End Windings of Enclosed Permanent-Magnet Synchronous In-Wheel Motor Based on Multi-Block Method
Publication Year: 2020,Page(s):85 - 94
Cited by: Papers (39)
This paper presents an accurate modeling method to investigate the thermal performance of the windings under steady state. The model considers the heat conduction of active windings and heat convection of end windings. To verify the validity of this model, a 20/24 poles/slots permanent magnet (PM) in-wheel motor is taken as an example. Firstly, the temperature distribution of the active windings i...Show More
Transient Analysis of Microgrids With Parallel Synchronous Generators and Virtual Synchronous Generators
Kai Shi;Wentao Song;Huilin Ge;Peifeng Xu;Yongheng Yang;Frede Blaabjerg
Publication Year: 2020,Page(s):95 - 105
Cited by: Papers (146)
In recent years, the increasing penetration of distributed generation in microgrids challenges the control and coordination of energy resources. Especially in microgrids with virtual synchronous generator (VSG)-controlled converters and conventional synchronous generators (SG), the inherent inertia difference (i.e., the VSG and SG) results in a poor transient performance when the VSG and/or loads ...Show More
A New Transformer-Less Five-Level Grid-Tied Inverter for Photovoltaic Applications
Publication Year: 2020,Page(s):106 - 118
Cited by: Papers (109)
A new fundamental structure of a single-phase transformer-less grid connected multilevel inverter based on a switched-capacitor structure is presented in this study. By employing the series-parallel switching conversion of the integrated switched-capacitor module in a packed unit, attractive features for the proposed inverter can be obtained such as high efficiency and boosting ability within a si...Show More
Constant-Parameter Voltage-Behind-Reactance Modeling of Five-Phase Synchronous Machines With Air-Gap Flux Harmonics
Navid Amiri;Seyyedmilad Ebrahimi;Yingwei Huang;Juri Jatskevich;Steven D. Pekarek
Publication Year: 2020,Page(s):119 - 129
Cited by: Papers (3)
Five-phase electric machines possess several distinct features and are sometimes considered in vehicular power systems and various special-purpose energy sources. Design and analysis of such machine-converter systems are highly dependent on simulation software programs, where accurate and numerically efficient dynamic models of five-phase synchronous machines are essential. Depending on levels of ...Show More
Frequency Control of Offshore Wind Farm With Diode-Rectifier-based HVdc Connection
Ashkan Nami;José Luis Rodriguez-Amenedo;Santiago Arnaltes;Miguel Ángel Cardiel-Álvarez;Roberto Alves Baraciarte
Publication Year: 2020,Page(s):130 - 138
Cited by: Papers (37)
This paper presents a direct frequency control for offshore wind farms (OWFs) connected to the diode-rectifier-based (DR-based) high voltage direct current (HVDC) link. The frequency control is guaranteed through reactive power balance at the DR station without a capacitor bank placed at the DR station; while AC-voltage magnitude is clamped by the DR, provided that the HVDC link voltage is imposed...Show More
Analytical Model of Permanent Magnet Linear Synchronous Machines Considering End Effect and Slotting Effect
Publication Year: 2020,Page(s):139 - 148
Cited by: Papers (54)
An effective analytical model of permanent magnet linear synchronous machine (PMLSM) is proposed in this paper, which considers the end effect by adding virtual slots and the slotting effect by adopting relative air-gap permeance. To employ this model, the open-circuit air-gap flux density of a slotless PMLSM with virtual slots is firstly predicted by Subdomain (SD) method, and then the complex re...Show More
A New Global Transposition Method of Stator Winding and Its Loss Calculation in AC Machines
Dongmei Wang;Yanping Liang;Lianlian Gao;Xu Bian;Chenguang Wang
Publication Year: 2020,Page(s):149 - 156
Cited by: Papers (19)
The stator winding acts as a carrier for the electrical load, and its loss accounts for about 50% of the total loss in AC machines. So how to design the stator winding for reducing winding loss is extremely crucial. Some traditional transposition methods are adopted in the winding design for large AC machines. Although they have a certain effect on reducing winding loss, there is still room for th...Show More
A Dynamic Model for Saturated Induction Machines With Closed Rotor Slots and Deep Bars
Eemeli Mölsä;Seppo E. Saarakkala;Marko Hinkkanen;Antero Arkkio;Mikko Routimo
Publication Year: 2020,Page(s):157 - 165
Cited by: Papers (14)
This paper deals with a dynamic model for three-phase induction machines equipped with closed rotor slots and deep rotor bars. The thin bridges closing the rotor slots saturate highly as a function of the rotor current. The impedance of the rotor bars also varies much as a function of the rotor current frequency. An extended dynamic model, which takes into account the slot-bridge saturation and th...Show More
Multiple Reference Frame Theory in the Synchronous Generator Model Considering Harmonic Distortions Caused by Nonuniform Pole Shoe Saturation
Publication Year: 2020,Page(s):166 - 173
Cited by: Papers (5)
The paper describes a synchronous generator model developed based on the multiple reference frame theory. The main physical phenomena included in the model are the machine armature non-sinusoidal voltage waveform and the influence of armature current in load conditions on the armature voltage waveform higher harmonic components. The modified multiple reference frame theory model is proposed. In th...Show More
Detection and Identification of Rotor Faults in Axial Flux Permanent Magnet Synchronous Motors Due to Manufacturing and Assembly Imperfections
Publication Year: 2020,Page(s):174 - 183
Cited by: Papers (22)
In this paper, a method is proposed to detect and identify the types of rotor faults in single stator single rotor axial flux permanent magnet synchronous motors, due to manufacturing and assembly errors. Three types of faults are considered: A shift in the rotor geometry along the axial direction, a parallel shift of the rotor geometry axis with respect to the stator axis, and inclined rotor. The...Show More
Control of Grid-Following Inverters Under Unbalanced Grid Conditions
Seyed Fariborz Zarei;Hossein Mokhtari;Mohammad Amin Ghasemi;Saeed Peyghami;Pooya Davari;Frede Blaabjerg
Publication Year: 2020,Page(s):184 - 192
Cited by: Papers (95)
This paper proposes a new control scheme to eliminate the 3rd harmonic in the output currents of grid-following inverters under unbalanced grid conditions. Unbalanced grids adversely affect the performance of grid-following inverters due to the oscillations appearing on the DC-link voltage with a frequency twice the line frequency. The paper is based on instantaneous active reactive control (IARC)...Show More
Modeling and Dynamic Performance Analysis of Brushless Doubly Fed Induction Machine Considering Iron Loss
Hamidreza Mosaddegh Hesar;Hossein Abootorabi Zarchi;Gholamreza Arab Markadeh
Publication Year: 2020,Page(s):193 - 202
Cited by: Papers (10)
Brushless doubly fed induction machine (BDFIM) which is able to operate in both induction mode and synchronous mode, has received increasing attention of researchers, in the last three decades. It could be considered as an emerging competitor for older structures, due to the substantial features such as brushless structure and requiring a fractionally rated frequency converter. The iron loss which...Show More
Operational Adaptability of PEM Fuel Cell for Optimal Voltage Regulation With Maximum Power Extraction
Phani Teja Bankupalli;Subhojit Ghosh;Lalit Kumar;Susovon Samanta;Sachin Jain
Publication Year: 2020,Page(s):203 - 212
Cited by: Papers (18)
Polymer electrolyte membrane fuel cell (PEMFC), because of faster response, portability and the low operating temperature has found wide usage in applications requiring regulated output voltage. Alongwith voltage regulation, optimum stack efficiency is important for reliable operation. Overall, the maximum efficiency point (MEP) operation and voltage regulation need to be achieved while restrictin...Show More
Diagnosis of Rotor Asymmetries Faults in Induction Machines Using the Rectified Stator Current
Ruben Puche-Panadero;Javier Martinez-Roman;Angel Sapena-Bano;Jordi Burriel-Valencia
Publication Year: 2020,Page(s):213 - 221
Cited by: Papers (39)
Fault diagnosis of induction motors through the analysis of the stator current is increasingly being used in maintenance systems, because it is non-invasive and has low requirements of hardware and software. Nevertheless, its industrial application faces some practical limitations. In particular, the detection of fault harmonics that are very close to the fundamental component is challenging, as i...Show More
An Offshore Wind Farm With DC Collection System Featuring Differential Power Processing
Publication Year: 2020,Page(s):222 - 236
Cited by: Papers (37)
The analysis of wind turbine output power measurements from the offshore wind farm Horns Rev 1 demonstrates a significant likelihood of wind turbine output powers to be very similar at a given time within offshore wind farms. This paper exploits this observation by proposing a new offshore wind farm configuration with DC collection system and series-connected wind turbines based on partial power p...Show More
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Editor-in-Chief
Dionysios Aliprantis
Professor
Purdue University, Elmore Family School of Electrical and Computer Engineering
West Lafayette
USA
dionysis@purdue.eduContact Information
Editor-in-Chief
Dionysios Aliprantis
Professor
Purdue University, Elmore Family School of Electrical and Computer Engineering
West Lafayette
USA
dionysis@purdue.eduIEEE Account
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