TechRxiv is a free preprint server for unpublished research in electrical engineering, computer science, and related technology. Powered by IEEE, TechRxiv provides researchers across a broad range of fields the opportunity to share early results of their work ahead of formal peer review and publication. Researchers are asked to upload their unpublished research.

Pressents the front cover for this issue of the publication.

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This article provides an electric ship history that starts during the early 1800s with the manual propulsion of small boats and concludes with modern electric vessels. An increasing demand for large ships for goods transportation, the cruise industry, and naval defense prompted tremendous research and development. Those efforts took place simultaneously in the marine industry and at universities, private

Motor vibrations are tested as a part of factory acceptance testing (FAT), normally on a massive foundation. In two-pole motors, there are two main sources of vibration: rotor unbalance and electrical twice-line frequency excitation. Low vibration implies that the natural frequencies of the motor are separated from the corresponding excitation frequencies. Usually, if the site foundation is rigid,

In the past 15 years, insurance industry data have indicated that stator end-winding vibration has become the most important cause of generator failure. The source of vibration is the current creating magnetic forces between coils, and it may be amplified due to mechanical resonance. End-winding vibration leads to failure by insulation abrasion or copper fatigue cracking. The extent of the repair caused

This article presents two alternatives to make choosing the appropriate cost-effective ac machine for a given application easier. One option increases the short circuit capacity (SCC) at the motor bus; the other uses a synchronous machine (SM) in lieu of an induction machine (IM). Both methods have the potential to yield higher-efficiency designs with better transient ridethrough capability.

The commissioning phase is the final stage of a project before production. This phase is where all the pieces of the puzzle have to come together. The objective of commissioning is to demonstrate to the end user that the goals and objectives specified in the project scope have met the requirements. This article focuses on premature failures of large motors in the oil and gas industries due to improper

The current development of adjustable-speed drives (ASDs) has made voltage source inverter (VSI) technology available to high-power applications, such as large axial compressors. Hence, the comparison of VSI technology to the traditional way of controlling large rotating equipment with load-commutated inverters (LCIs) is of interest. This article compares the ASD systems for shaft powers of 20 MW or

The formula sae, or formula student, is an international vehicle design competition carried out by university students. This article deals with a fractional-slot synchronous permanent magnet (PM) machine designed to be mounted in the wheel hub of an electric vehicle (EV). By adopting an outer ironless rotor topology, a Halbach array magnet structure, and light materials, a low rotor inertia and a high-torque

Efficiency improvements attainable with permanent magnet (PM) motors have been well documented. Some PM motors have been equipped with an induction cage in the rotor to allow direct online (DOL) starting. Designs of this type have been referred to as line-start PM (LSPM) motors. A topic that has not received much attention is the use of this type of motor with an adjustable-speed drive (ASD). This

The use of direct-drive machines in renewable and industrial applications is increasing at a rapid rate. Transverse flux machines (TFMs) are ideally suited for direct-drive applications due to their high torque density. This article presents a comprehensive review of permanent magnet (PM) TFMs for direct-drive applications. It introduces TFMs and their operating principle and reviews the different

Presents the recipients of IAS society awards in 2020.

Presents news of interest to IAS society members.

Recounts the career and contributions of Frederick Charles Trutt.

Recounts the career and contributions of Donald W. Zipse.

Reports on IAS society standards activities.

Prospective authors are requested to submit new, unpublished manuscripts for inclusion in the upcoming event described in this call for papers.

Presents information on various IAS society chapters.

Presents the IAS society calendar of upcoming events and meetings.

Presents the front cover for this issue of the publication.

Presents the table of contents for this issue of the publication.

Presents a listing of the editorial board, board of governors, current staff, committee members, and/or society editors for this issue of the publication.

Presents the introductory editorial for this issue of the publication.

Presents letters to the editor for this issue of the publication.

Presents the President’s message for this issue of the publication.

Discusses problems associated with counterfeited products. Any products that are purchased— PPE for workers or electrical equipment for use or installation— should be checked for signs of counterfeiting. A Source of Hazards to Workers hazard to industrial workers that gets little attention is the use of counterfeit electrical equipment and safety products. There have been many recent news articles

I purchased my first mechanical analog computer in 1962, when I was an electrical engineering freshman at the University of Illinois. It was distributed by The Fredrick Post Company of Chicago, but manufactured by The Hemmi Bamboo Slide Rule Company Ltd. in Japan. The model I obtained was the Versalog 1460 slide rule (slipstick) with the cordovan color leather case (Figure 1). This was the essential

Low-impedance generator differential protection is commonly used for detecting stator phase and ground faults in medium-voltage applications. An offshore platform started experiencing sporadic generator differential protection trips during the start-up of a newly commissioned, large water-injection pump (WIP) motor rated at 4,100 kW. The main power sources on the platform are three 16.25-MVA gas turbine

This article discusses the process of developing an electrical system master plan and utility upgrade for a large pharmaceutical research, manufacturing, and office facility. The ultimate goal for the site is to develop a more sustainable, resilient, and flexible campus. In this article, the team outlines the procedure for developing a list of project drivers, moves through the three design options

In many wye electrical systems, the function of the ground and neutral conductor is not differentiated because they are incorrectly joined. From a technical point of view, a connection between ground and neutral shall only be made once, at the main electrical panel; otherwise, those conductors should form two different paths. Although the implications of this connection are often seen as shallow and

Despite their high costs, active harmonic mitigation solutions such as parallel active power filters (APFs) and active front end (AFE) drives are growing in popularity. As the newest technology, they are being touted as a better choice than the various forms of passive harmonic mitigation solutions that are presently available. Is this actually the case? Active solutions incorporate switching strategies

The topic of neutral grounding of industrial and commercial power systems has been covered extensively in the literature. The first part of "A Design Guide to Neutral Grounding of Industrial Power Systems" was published previously by the authors [1]. That article traced the historical evolution of power system grounding practices in North America. Various grounding methods were compared, and the pros

Since it was first published in 2002, IEEE standard 1584 has been the premier standard for arc-flash hazard arcing current, incident energy, and arc-flash boundary (AFB) calculations for an arc-flash incident. After extensive testing and model development and a validation period, the long-awaited revision of IEEE 1584 has been published. The purpose of this article is to introduce IEEE Standard 1584-2018

This article examines and studies a coal-chemical plant through a dynamic computer model as well as designs an automatic load-shedding protection. The plant has on-site generation to support partial plant loads. In the past, disconnecting from the utility grid had caused frequency and voltage decays in the plant electrical system to dropout critical loads. A complete system computer model is constructed

Profiles the IAS society member, Sumit Chhabria.

Presents IAS news of interest to society members.

Discusses the importance of IAS members getting involved in the development of industry application standards.

Presents listings of award recipients from the IAS society.

Presents information on the IAS society Web Tutorial Program.

Presents the IAS society calendar of upcoming events and meetings.

Presents the front cover for this issue of the publication.

Presents the table of contents for this issue of the publication.

Presents a listing of the editorial board, board of governors, current staff, committee members, and/or society editors for this issue of the publication.

Presents the President�s message for this issue of the publication.

One day a light bulb went on over our two heads, and we had this idea to write an article about the SPARK Museum in Bellingham, Washington, (Figure 1) and the history of electricity.

Lists the recpients of IAS society awards.

Presents information on the 2020 IAS Electrical Safety Workshop and IEEE PESGRE 2020.

Reports on various IAS society chapter news.

Presents the IAS calendar of upcoming events and meetings.

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In 2014, a BC Hydro electrician made inadvertent hand contact with a 12-kV bus while working on a station disconnect switch installation. The electrician lived but ended up losing both arms below the elbows. This article provides an overview of the incident, the two-and-a-half-month investigation, and the corrective action of implementing improved hazard identification and effective barriers as a part

Keeping employees safe is a cornerstone of most industrial safety policies. Often, facility safety personnel are unaware of what the requirements are for electrical systems, so they treat those policies as special. Many forest product industry facilities have standards related to their electrical distribution systems and testing requirements. Most insurance carriers require protective devices to be

A novel Overcurrent (OC) protection methodology applied for flyback converters is proposed. This technique provides the advantage of immunity to input-voltage variation and inductance deviation from production-line manufacturing, making accurate OC available. Experimental results guarantee highly significant improvement based on OC variation of less than 0.733% under universal-line voltage conditions

All end users within heavy industry focus on improving safety, and some also work on improving operations excellence, but there are only a few end users who spend equally as much time on reliability. The IEEE Industry Applications Society Petroleum and Chemical Industry Committee, which created a stand-alone safety entity focused on electrical safety, is an example of this culture. Unfortunately, industry

This article presents two practical methods used for lowering residential consumers' electricity bills. The first method is the implementation of net metering, which is used in many areas, such as Australia, the United States, the United Kingdom, the European Union, India, South America, Brazil, Colombia, and Argentina [1]-[3]. One example of the implementation and analysis of net metering is discussed

Technological obsolescence and the lifecycle management of electrical equipment and automation systems are of fundamental importance to guarantee the operational continuity of power and industrial plants. This article presents a methodology to manage technological obsolescence and establishes requirements to classify equipment and systems into obsolescence grades. Moreover, it presents criteria to