Y. Yanawati

Parameter determination of 0.5 hp induction motor based on load factor test-a case study

The load can influence the efficiency of the induction motor. Even if the load has higher or less load factor, it can reduce the efficiency of an induction motor by several percentage. By knowing this, it is important that an induction motor be loaded with an appropriate or load factor of 100%. In this paper, the experiment is conducted to prove that efficiency decreases when the 0.5 hp induction motors is interfaced under low load factor condition and in this case a 65% load factor. The induction motor is interfaced with a DC generator and a variable resistance as load. In order to determined the efficiency and the mechanical output power of the induction motor, the voltage of the induction motor is varied from 0–415 volt and the appropriate data is taken. This is then analysis and several calculation formulas are used to determine the motors parameters. After that the losses are segregated and from this we can compare the efficiency values in which it shows low efficiency of 66.62% based on output/input method and 66.34% by using the losses formula. This proofs that at low load factor the efficiency of the induction motor reduces.

Nominal power loss on 0.35 mm and 0.50 mm thicknesses of non-oriented steel sheets using Epstein tester frame

Decrease thickness of steel sheets will decrease the total loss especially in core loss and copper loss. This paper presents the effect of thickness in power loss for non-oriented steel sheets. The study was carried out by using an Epstein tester frame for both thicknesses. The data is presented based on 50 Hz. It shows that the thickness of 0.50 mm have more losses compared to 0.35 mm.

The impacts of stator outside diameters on induction motor nameplates: Analysis by using a finite element

Design stimulation by software is important in order to save money and time. This paper is using stimulation software, which is a finite element method, to analyze the stator outside diameter impact on rated current, horse power, power factor and motor efficiency. Then, engineer shall start to build the model after completing the stimulation. The model shall be compare to the stimulation results in order to see the effectiveness.

Comparison Induced Voltage between 0.35 mm and 0.50 mm Thicknesses 3% SiFe (NG) with Different Frequency

– This paper presents the comparison induced voltage between 0.35 mm and 0.50 mm thicknesses 3% SiFe (NG) with different frequency which are 45 Hz, 50 Hz and 60 Hz by using Single Sheet Tester (SST). This experiment used to measure the search coil voltage L1N1 and L2N2 at two positions (1st position and 2nd position) and harmonic content. The analysis shows, at different frequency for both thicknesses, the value of search coil voltage L1N1 is higher than the search coil voltage L2N2 for both positions. It shows the easy direction is single sheet tester direction at the 1st position for 0.35 mm and 0.50 mm thickness with different frequency. For harmonic content, at 0.6 T with different frequency for both thicknesses, the 3rd order harmonic factor of 0.35 mm is lower than 0.50 mm thickness 3% SiFe (NG). It is because the higher losses can increase the harmonic of the materials. It means that harmonic is affected by ingredient and thicknesses in core material.

Performance Comparison on 0.35 mm and 0.50 mm Thicknesses of Non-Oriented Steel Sheets Using FEM

– Decrease the iron loss, total loss and thicknesses of steel sheets will produce high efficiency of the induction motor This paper studies, a rotor construction with different thickness was investigated thoroughly and analyzed in the case of efficiency, torque, all losses and distribution field. All result simulation was done by MotorSolve (IM) which allows the user to produce more design of induction motor with a decision within a short time. According to simulation result, the 0.35 mm showed that a best performance and efficient compared to 0.50 mm thickness of rotor frame.

Effect of Different Type of Rotor Bars on Performance Using FEM

Different rotor bars type, lower in iron loss, total loss and thicknesses of steel sheets will increase the efficiency of the induction motor. In this paper, the 3-phase 0.5 Hp AC induction motor have been thoroughly investigated and analyzed in term of efficiency, torque, iron loss, total loss and loss field. The comparison is done by software simulation named MotorSolve (IM) that enable user to produces more design of induction motor with result in a short time. Based on simulation, it shows that the Round Bars (RO.B) have more efficient compared to Round Outer and Inner Bars (ROIB) type.

Design and modeling of 1-phase induction motor using Opera 2D software based on copper material

The paper presents the use of Opera 2D for designing and modeling of single phase induction motor with copper material. The materials are verified with the number of conductivity in the rotor bar. The winding calculation and the single phase winding are used for the circuit element in the program. The current, torque and magnetic are also taken into account. The complete model of the 1-phase 36/24slots, 4 pole, induction motor based on copper material presented in this study.

Efficiency increment of 0.5hp induction motor by using different thickness of rotor lamination steel sheet via FEM

In this paper, the three phase AC induction motor have been thoroughly investigated and analyzed in terms of the induction motor parameter, efficiency and loss segregation. Through out this project, a new rotor which has 0.35mm lamination steel sheet and 10mm rotor bar size is fabricated and compared with the existing rotor which has 0.50mm and 10mm rotor bar size. The comparison is done by software simulation using Motorsolve (IM) Software between existing rotor bar and new rotor bar for the same 0.5HP stator slot design and winding configuration. The Motorsolve (IM) Software is compared in terms of efficiency, power factor and loss fields. Simulation analysis shows that the 0.35mm thicknesses steel sheet has an increment of 1.82% for the efficiency, an increment of 0.03 for the power factor and a decrement of 19.52% lamination eddy current loss as compared to that of 0.50mm steel sheet.

Predicting the localized flux distribution in three phase induction motor between different stator slot size

A three phase induction motor differences of stator slot size is investigated in terms of its localized flux distribution. The search coil induced voltage method is used to analyze the flux distribution in the stator core. For both stator models, the maximum flux density is found near the tooth tip and minimum towards the outer region of the stator core. By saying so, this investigation shows that if there are differences in the stator slot size, the values of flux density differs as well.

In House Construction of an Induction Motor Rotor by Using 0.35mm Thickness of Steel Sheet for Efficiency Based Investigation

In this paper, an in house production of a 0.5hp induction motor’s rotor is investigated. This investigation considers the induction motor’s efficiency and losses dissipation as an important aspect to determine the rotors efficiency. Through out this project, a new rotor which has 0.35mm steel sheet thickness and 10mm rotor bar slot size is constructed and compared with the existing rotor which has 0.50mm steel sheet thickness and 10mm rotor bar slot size. Once the construction phase of the rotor has been completed an in house motor experiment is done such as the no load, blocked rotor and dc resistance test. Result shows that thinner steel sheet (0.35mm) of the constructed rotor increase the efficiency up to 3.2% and reduces the losses to 17.2 watts compare to the thicker steel sheet rotor (0.5mm). An economical aspect is presented to show the amount of energy and money that can be saved from replacing the existing rotor (0.5mm) with a thinner rotor (0.35mm). As for the annual energy saving (AES) and total cost saving (TCS), the new rotor manage to save 138.7kWh per year and utility billing by RM45.51 per year per motor.