Proceedings ArticleDOI
Design of Experiments for Stator Windings Insulation Degradation under High dv/dt and High Switching Frequency
TLDR
In this paper, a series of tests are conducted on electrical stators representative of typical low voltage machines used in traction and industrial applications to quantify the detrimental effects on machine insulation lifetime.Abstract:
SiC power devices are gaining increased interest due to their superior performance and increased efficiency in motor drives compared to traditional Si-based IGBT converters. However, the increased switching frequency and much faster switching transients (high dv/dt) of Silicon Carbide (SiC) compared to their IGBT counterparts, can result in increased stress in electrical machines. To quantify these detrimental effects on machine insulation lifetime, a series of tests are conducted on electrical stators representative of typical low voltage machines used in traction and industrial applications. A Design of Experiment (DoE) methodology is employed to identify the test sequence using three stressors. In particular, three values of DC link voltage level, rise time or slew rate of the voltage waveform, and switching frequency, respectively are considered. The paper describes the planned tests and conditions, the insulation health monitoring method employed, and preliminary results.read more
Citations
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Proceedings ArticleDOI
A Novel Ring-Shaped Fractal Antenna for Partial Discharge Detection
TL;DR: In this article, a ring-shaped hybrid fractal antenna is proposed for the detection of partial discharge in inverter-fed low voltage drives. But, the proposed hybrid antenna is not suitable for the case of PWM-controlled inverters.
Journal ArticleDOI
A Novel Embedded Sensor for Partial Discharge Detection in Inverter-Fed Machines
TL;DR: In this article , a ring-shaped hybrid fractal antenna for detection of partial discharge (PD) in inverter-fed machines has been proposed and experimentally demonstrated to show a high sensitivity in the ultrahighfrequency bandwidth of interest for PD detection as well as an ability to discriminate PD signals from other sources of highfrequency disturbances.
New Experimental System and Procedure for On-line Insulation Life Testing of Stator Winding of Automotive Traction PMSM without using Dynamo System
Teppei Hayakawa,Yuto Maeda,Hiroaki Matsumori,Takashi Kosaka,Nobuyuki Matsui,Yoichi Miyoshi,Kiyotaka Koga,Subrata Saha +7 more
TL;DR: In this article , an experimental procedure using a new experimental system for on-line insulation turn-to-turn life testing of a stator winding without a rotor of permanent magnet synchronous motor was proposed.
Proceedings ArticleDOI
New Experimental System and Procedure for On-line Insulation Life Testing of Stator Winding of Automotive Traction PMSM without using Dynamo System
TL;DR: In this paper , an experimental procedure using a new experimental system for on-line insulation turn-to-turn life testing of a stator winding without a rotor of permanent magnet synchronous motor was proposed.
Proceedings ArticleDOI
Survey of Insulation in Electrical Machines for Aerospace: Systems, Materials & Inspection
TL;DR: An overview of the main insulation systems and materials used in electrical machines, with a focus on aerospace applications, can be found in this article , where the main stresses to which insulation components are exposed, the state-of-the-art in diagnostic tests, and inspection methods.
References
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Aging phenomenology and modeling
Gian Carlo Montanari,L. Simoni +1 more
TL;DR: In this article, the authors present the fundamentals of phenomenological aging theory and life modeling and give electrical and combined-stress life data for different materials, showing either linear or curvilinear behavior.
Journal ArticleDOI
Electrical Aging of the Insulation of Low-Voltage Machines: Model Definition and Test With the Design of Experiments
TL;DR: A method for modeling the life span of insulation materials in a partial discharge regime that reduces the number of time-consuming experiments, increases the accuracy of the results, and allows life span modeling under various stress conditions, including coupling effects between the factors.
Journal ArticleDOI
Power electronics and electrical insulation systems ߝ Part 1: Phenomenology overview
TL;DR: In this paper, it is shown that the wide use of power electronic converters (PEC) is one of the main causes of current and voltage distortion in the electrical networks.
Journal ArticleDOI
Partial Discharge Phenomenology and Induced Aging Behavior in Rotating Machines Controlled by Power Electronics
TL;DR: Results show that the features of repetitive voltage impulse affect PD time and frequency characteristics, PD phase distribution, and endurance, and evaluation of insulation subjected to power electronics waveforms should take into account the appropriate choice of impulsive voltage parameter to fit to the type of PD phenomenology occurring in service conditions.
Journal ArticleDOI
Induction Machine Insulation Health State Monitoring Based on Online Switching Transient Exploitation
TL;DR: A method to monitor changes in the insulation health state by evaluating the machine high-frequency properties by applying signal processing tools and an insulation state indicator is derived is proposed.