PWM-Switching-Pattern-Based-Diagnosis-Scheme-for-Induction-Motor-Drives

PWM-Switching Pattern-Based Diagnosis Scheme for Induction Motor Drives

Abstract: This paper deals with a fault detection technique for insulated-gate bipolar transistors (IGBTs) open-circuit faults in voltage source inverter (VSI)-fed induction motor drives. The novelty of this idea consists in analyzing the pulse-width modulation (PWM) switching signals and the line-to-line voltage levels during the switching times, under both healthy and faulty operating conditions. The proposed […]

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AutoQuiz-What-Are-Acceptable-Hazardous-Location-Protection-Techniques-for-Industrial-Areas

AutoQuiz: What Are Acceptable Hazardous Location Protection Techniques for Industrial Areas?

Today’s automation industry quiz question comes from the ISA Certified Automation Professional certification program. ISA CAP certification provides a non-biased, third-party, objective assessment and confirmation of an automation professional’s skills. The CAP exam is focused on direction, definition, design, development/application, deployment, documentation, and support of systems, software, and equipment used in control systems, manufacturing information […]

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Process-Analyzer-Systems-Project-Engineering-and-Management-excerpt

Q&A with Author of New ISA Book: Process Analyzer Systems Project Engineering and Management

Q. Why were you inspired/motivated to write this book? A. There are many books and other resources available on engineering project management. However, there are few available on control systems engineering project management, and none available—that I am aware of—on process analyzer engineering project management. By writing this book, I hope to ease the engineering […]

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Calculate-Safety-Instrumented-System

How to Link HAZOP and LOPA to Calculate a Safety Instrumented System

Although a hazard and operability (HAZOP) analysis identifies failure events or upsets and the severity of the outcomes by engaging knowledgeable plant personnel, the process typically provides only qualitative information about event frequency and mitigated frequencies. This helps plants make decisions for safety improvement, but does not provide the detailed information necessary for a safety […]

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AutoQuiz-When-Does-an-Instrument-Need-to-Be-Recalibrated

AutoQuiz: When Does an Instrument Need to Be Recalibrated?

Today’s automation industry quiz question comes from the ISA Certified Control Systems Technician (CCST) program. Certified Control System Technicians calibrate, document, troubleshoot, and repair/replace instrumentation for systems that measure and control level, temperature, pressure, flow, and other process variables. Click this link for information about the CCST program. This question comes from the Level I […]

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Take-Advantage-of-the-Opportunities-at-ISA-Fall-Leaders-Meeting

Take Advantage of the Opportunities at ISA’s Fall Leaders Meeting

The ISA Fall Leaders Meeting (FLM)—which will get underway later this month in Tampa, Florida—brings ISA leaders together to assess the state of the Society, consider strategies and actions to improve operational results, conduct training sessions for new leaders, plan for leadership succession, celebrate achievements, and promote fellowship. For the seasoned member and/or leader, it […]

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How-to-Use-Life-Cycle-Dynamic-Simulation-to-Optimize-Process-Plant-Operations

How to Use Life-Cycle Dynamic Simulation to Optimize Process Plant Operations

The oil and gas production explosion is driving the renaissance of the chemical and process industries. With low-cost natural gas comes low-cost feedstock for many chemical compounds, in the form of ethane, propane, and butane, economically boosting the chemical industry. The American Chemistry Council released a report predicting capital investment of $72 billion in more […]

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AutoQuiz-What-Is-the-Standard-for-Embedded-Software-for-a-SIL-3-Certified-Safety-System

AutoQuiz: What Is the Standard for Embedded Software for a SIL 3 Certified Safety System?

Today’s automation industry quiz question comes from the ISA Certified Automation Professional certification program. ISA CAP certification provides a non-biased, third-party, objective assessment and confirmation of an automation professional’s skills. The CAP exam is focused on direction, definition, design, development/application, deployment, documentation, and support of systems, software, and equipment used in control systems, manufacturing information […]

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Applications-of-Thermoelectric-Modules-on-Heat-Flow-Detection

Applications of Thermoelectric Modules on Heat Flow Detection

Abstract: This paper presents quantitative analysis and practical scenarios of implementation of the thermoelectric module for heat flow detection. Mathematical models of the thermoelectric effects are derived to describe the heat flow from/to the detected media. It is observed that the amount of the heat flow through the thermoelectric module proportionally induces the conduction heat owing […]

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