Sensorless speed control of induction motors with minimum loss

Seleme, Seleme Isaac; Prado, A.Jr. do; Marques, Lorraine Cichowicz

doi:10.1109/cca.2002.1040171

Cited by 4 publications

(4 citation statements)

References 6 publications

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“…This tool consisted basically of making questions to obtain essential information that will help support overall planning. The 5W2H terminology, according to Seleme & Stadler [10] the project needs that can be better met by using the Human Resources available within the organization or considerations of when, how, who, how many and where to hire. -Planning of Risks -Identifying the risks to be considered, when to implement a contingency action and how much to make available to mitigate or transfer risks.…”

Section: Presentation and Discussion Of Resultsmentioning

confidence: 99%

Organizational ergonomics of occupational health methods and processes in a Brazilian oil refinery

Baú

Farias

Buso

et al. 2012

Work

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Organizational ergonomics refers to the optimization of social technical systems, including their organizational structures, policies and processes. The relevant topics include communications, management of resources, work projects, temporal organization of work, team work, participative project, new work paradigms, cooperative work, organizational culture, network organizations and quality management (IEA, 2000). The purpose of this study was the reorganization of the methods and processes of the occupational health sector (SMS/SO -Portuguese acronym of the area) of a petrochemical company. The work involved thirty professionals: a coordinator, two occupational physicians, one cardiologist, one occupational dentist, two occupational nurses, eleven occupational health technicians, one social worker, one nutritionist, one phonoaudiologist, one ophthalmologist, one biochemist, two ergonomists, three administrative assistants, one administrator and one psychologist, during a six-month period. The methodology that was used sought to establish a cooperative alliance focused on change, transformation and acquisition of skills, reflecting directly on the attitudes and performance of the leaderships and their work teams. In addition to the feedback practice, the following supporting tools were used for the study's success: "Functional Polyvalence Matrix", "Management of Failures", 5W2H", "6M", "5 Why" and "process mapping". The intended results after the organization ergonomics restructuring process will allow the leader to help his or her team to make a diagnosis of the problems, identify options, develop strategies, establish targets and action plans, remove barriers, review contexts and implement the business management fundaments: planning, organization, management, coordination and control.

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Section: Presentation and Discussion Of Resultsmentioning

confidence: 99%

Organizational ergonomics of occupational health methods and processes in a Brazilian oil refinery

Baú

Farias

Buso

et al. 2012

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“…Some of these LMTs use motor parameters derived from offline motor testing, where the parameters are assumed to be fixed [21], [22], [23], [24], [25], [26], [27], and [28]. Others use look-up tables derived offline from a motor model [29], while still others try to estimate the parameters online and then use them to achieve minimum losses [30], [31], and [32].…”

Section: Model-based Techniquesmentioning

confidence: 99%

“…Table 1 reflects different estimates of power losses that are minimized using different variables. Power loss models can either be simple and straight forward from the motor equivalent circuit where core and copper losses are considered [32] and [35], or more complex [26] and [22]. While all models depend on motor parameters, complex models also depend on factors such as k e , k h , k str and/or k fw which are hard to determine.…”

Section: Model-based Techniquesmentioning

confidence: 99%

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A survey of real-time power-loss minimizers for induction motors

Bazzi

Krein

2009

2009 IEEE Electric Ship Technologies Symposium

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This paper presents a survey of available techniques for minimizing power losses and input power of induction motors. The presented techniques serve different induction motor applications, including electric ship propulsion systems. Realtime techniques presented here are divided into three main categories: model-based methods that use the induction motor model, physics-based methods that search for the minimum power loss regardless of the motor model or parameters, and hybrid methods that combine both approaches. Definitions, comparisons, and details about these methods are presented. To compare model-based and physics-based methods in a propulsion application, simulations of a model-based technique and another physics-based technique are also presented.

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Discussion on: “Analytical Solution of Optimized Energy Consumption of Induction Motor Operating in Transient Regime”

Seleme

2011

European Journal of Control

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Sensorless speed control of induction motors with minimum loss

Cited by 4 publications

References 6 publications

Organizational ergonomics of occupational health methods and processes in a Brazilian oil refinery

Organizational ergonomics of occupational health methods and processes in a Brazilian oil refinery

A survey of real-time power-loss minimizers for induction motors

Discussion on: “Analytical Solution of Optimized Energy Consumption of Induction Motor Operating in Transient Regime”

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