High Accuracy Measurement of Total Losses in Fractional Horsepower Induction Motors

Large and small single-phase and three-phase induction motors are commonly used in industrial applications. The present work represents an attempt towards the design of a high accuracy system for the measurement of fractional horsepower (FHP) induction motor losses and efficiency. The calorimeter designed and built is capable of measuring heat losses of up to 1 kW with an overall accuracy better than 3%. During all tests, ambient temperature, humidity, motor speed and motor frame temperature were recorded using precise digital instruments. The inlet, outlet temperatures and resulting losses were recorded automatically using a high accuracy 12-bit data acquisition system. The preliminary results obtained demonstrate the suitability of the designed calorimeter for the accurate measurement of losses in FHP induction motors.

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An ADC Test Technique With Dual-Path/Multi-Functional Fine Pattern Generator Realizing High Accuracy Measurement for CMOS Image Sensor

2020 IEEE 29th Asian Test Symposium (ATS) ◽

10.1109/ats49688.2020.9301531 ◽

2020 ◽

Author(s):

Fukashi Morishita ◽

Masanori Otsuka ◽

Wataru Saito

Keyword(s):

Cmos Image Sensor ◽

Image Sensor ◽

Pattern Generator ◽

High Accuracy ◽

Test Technique ◽

Accuracy Measurement ◽

Adc Test ◽

Fine Pattern ◽

High Accuracy Measurement

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High-accuracy measurement of air refractive index using two frequency-doubling crystals

Optics Communications ◽

10.1016/0030-4018(94)90549-5 ◽

1994 ◽

Vol 104 (4-6) ◽

pp. 241-244 ◽

Cited By ~ 13

Author(s):

Hirokazu Matsumoto ◽

Lijiang Zeng

Keyword(s):

Refractive Index ◽

Frequency Doubling ◽

High Accuracy ◽

Accuracy Measurement ◽

High Accuracy Measurement

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High accuracy measurement of the ground-state hyperfine splitting in a 113Cd+ microwave clock: erratum

Optics Letters ◽

10.1364/ol.444407 ◽

2021 ◽

Vol 46 (20) ◽

pp. 5207

Author(s):

K. Miao ◽

J. W. Zhang ◽

X. L. Sun ◽

S. G. Wang ◽

A. M. Zhang ◽

...

Keyword(s):

Ground State ◽

Hyperfine Splitting ◽

High Accuracy ◽

Accuracy Measurement ◽

High Accuracy Measurement

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Windings Design for Single-phase Induction Motors Base on 4-phase Induction Motor (Case study: identical windings design)

MATEC Web of Conferences ◽

10.1051/matecconf/201821501023 ◽

2018 ◽

Vol 215 ◽

pp. 01023 ◽

Cited By ~ 1

Author(s):

Zuriman Anthony ◽

Erhaneli Erhaneli ◽

Zulkarnaini Zulkarnaini

Keyword(s):

Induction Motor ◽

Power Factor ◽

Single Phase ◽

Induction Motors ◽

Three Phase ◽

Motor Design

A 1-phase induction motor usually has a complicated windings design which compares to polyphase induction motor. In addition, a large capacitor start is required to operate the motor. It is an expensive way to operate the motor if it compare to polyphase induction motor. So, a new innovation method is required to make the motor more simple and cheaper. This research is purposed to study a new winding design for a single-phase capacitor motor. Winding design of the motor was conducted to a simple winding design like a 4-phase induction motor that has four identical windings. The comparator motor that use in this study was a Three-phase induction motor with data 1400 RPM, 1.5 HP, 50Hz, 380/220V, Y/Δ, 2.74/4.7A, 4 poles, that had the same current rating which the proposed method. The result showed that the motor design on this proposed method could be operated at 88.18 % power rating with power factor close to unity.

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Experimental Study of Various Parameters during Speed Control of Three-phase Induction Motor Using GPIC and LabVIEW

Annals of Emerging Technologies in Computing ◽

10.33166/10.33166/aetic.2021.01.005 ◽

2021 ◽

Vol 5 (1) ◽

pp. 51-62

Author(s):

Adnan Ahmed ◽

Abdul Majeed Shaikh ◽

Muhammad Fawad Shaikh ◽

Shoaib Ahmed Shaikh ◽

Jahangir Badar Soomro

Keyword(s):

Induction Motor ◽

Induction Motors ◽

Induction Machine ◽

Speed Control ◽

Industrial Applications ◽

General Purpose ◽

Three Phase ◽

Field Programmable ◽

Input Source ◽

Open Control

Induction motors are widely used from home to industrial applications. Speed of induction motor plays important role, so to control the speed of induction motor various techniques are adopted and one of these techniques is V/F control, which is adopted in this paper. This technique helps to control the speed in open control system in RPM. Moreover, Control is designed in LabVIEW, it is quite helpful to develop the circuit graphically and code is automatically written in the background to run on Field Programmable Gate Array (FPGA). The aim of this research is to study the impacts on diverse parameters during speed control of three phase induction machine with manipulation of GPIC. Solar technology is used as input source to drive the General-Purpose Inverter Controller (GPIC). Apart of this, impacts of modulation index and carrier frequency influencing the active, reactive and apparent power, temperature and power quality and current overshoot is analysed. MATLAB/Simulink and LabVIEW tools are used for simulation and results along with GPIC, Induction motor and solar panel as hardware.

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