Modelling the effect of variable speed drive switching on induction motor performance

2002 ◽  
Author(s):  
A.M. Knight ◽  
J.C. Salmon
Keyword(s):  
Induction Motor ◽  
Motor Performance ◽  
Variable Speed ◽  
Variable Speed Drive

scholarly journals Studi Penggunaan Variable Speed Drive Untuk Pengaturan Kecepatan Motor Exhaust Fan Pada Dyno Test Room PT. Trakindo Utama Pekanbaru

JURNAL TEKNIK ◽  
2018 ◽  
Vol 12 (2) ◽  
pp. 85-96
Author(s):  
Elham Prasetyo Wibowo ◽  
Elvira Zondra ◽  
Usaha Situmeang
Keyword(s):  
Power Consumption ◽  
Induction Motor ◽  
Gas Flow ◽  
Air Flow ◽  
Load Test ◽  
Exhaust Gas ◽  
Variable Speed ◽  
Variable Speed Drive ◽  
Combustion Gas ◽  
Motor Exhaust

                                                                                                                                      ABSTRAK              Exhaust fan adalah peralatan berupa sudu-sudu yang berputar dan memanfaatkan gaya sentrifugal untuk membuang exhaust gas hasil pembakaran bahan bakar solar engine diesel pada saat dilakukan tes pembebanan penuh. Dengan exhaust fan, gas karbondioksida yang dihasilkan oleh engine diesel memungkinkan untuk dibuang dengan cepat sehingga tidak memenuhi ruangan dan membahayakan bagi setiap karyawan. Pengoperasian exhaust fan dilakukan sesuai jadwal pengetesan engine. Exhaust fan tersebut digerakkan oleh motor induksi 3 phasa 30 kW dengan putaran nominal secara konstan. Pada saat pengetesan engine dengan nilai aliran gas buang yang rendah, exhaust fan tetap dioperasikan dengan kecepatan nominal. Operasional motor exhaust fan dengan kecepatan konstan seperti ini akan mengakibatkan konsumsi daya listrik yang relatif tinggi dari pada motor dengan kecepatan berubah-ubah sesuai kebutuhan. Sebagai pertimbangan hasil perhitungan untuk engine C 18 Caterpillar kapasitas 831 hp yang sebelumya  membutuhkan operasional exhaust fan dengan daya 24,7927 kW nilai sama untuk semua model engine, setelah penggunaan VSD dapat dikurangi sebesar 14,35 %  menjadi 21,2343 kW saja. Penelitian ini bertujuan mendapatkan probabilitas hubungan antara konsumsi energi listrik, frekuensi pada variable speed drive, putaran motor induksi dan nilai aliran udara pada cerobong exhaust fan. Nilai aliran udara exhaust fan tersebut akan disesuaikan dengan nilai aliran gas pembakaran yang dihasilkan oleh engine. Analisa optimasi motor exhaust fan ini sedianya akan menggunakan Matematic Analysis dan simulasi menggunakan simulink matlab sehingga diharapkan ada solusi untuk melakukan penghematan terhadap konsumsi daya motor, kemudian bisa diterapkan dalam semua pengoperasian motor yang ada di perusahaan.   Kata kunci : variable speed drive, motor induksi, exhaust fan                                                                                                                                            ABSTRACT              The exhaust fan is a rotary blade device which produces centrifugal force to remove exhaust gas from diesel fuel combustion during a full load test. With exhaust fans, the carbondioxide gases that generated by the diesel engine allows to be disposed quickly so that it does not fill the room and harm to every employee. The operation of  exhaust fan is carried out according to the engine test schedule. The exhaust fan is driven by a 3 phase induction motor of  30 kW with constant rotation. When testing the engine with a low Exhaust Gas flow value, the exhaust fan remains operated at rated speed. Operational exhaust fan with a constant speed like this will result in relatively high power consumption of the motor with the speed of change as needed. Considering the calculation results for C 18 engine Caterpillar capacity of 831 hp which previously required operational exhaust fan with 24,7927 kW of equal value for all engine models, after the use of VSD can be reduced by 14.35% to 21.2343 kW only. This study aims to obtain the probability of relationship between electrical energy consumption, frequency on the variable speed drive, induction motor rotation and the value of air flow in the exhaust fan chimney. The value of the exhaust fan air flow will be adjusted to the combustion gas flow value generated by the engine. The optimization analysis of this motor exhaust fan will be using Matematic Analysis and simulation using matlab simulink so it is expected there is a solution to make savings to motor power consumption, then it can be applied in all the motor operation in the company.   Keywords: variable speed drive, induction motor, exhaust fan

Computer-Controlled Induction Motor Drive for Teaching Purposes

1993 ◽  
Vol 30 (1) ◽  
pp. 77-87
Author(s):  
J. F. Gieras ◽  
H. H. Buhlmann
Keyword(s):  
Induction Motor ◽  
Digital Computer ◽  
Closed Loop ◽  
Motor Drive ◽  
Induction Motor Drive ◽  
Variable Speed ◽  
Variable Speed Drive ◽  
Squirrel Cage ◽  
Load Characteristics ◽  
Computer Controlled

Computer-controlled induction motor drive for teaching purposes A digital-computer-controlled variable-speed drive with 1.5 kW induction motor has been designed. The commercial squirrel cage as well as solid steel rotors have been applied. The load characteristics for speed control (open and closed-loop) have been presented and discussed.

scholarly journals Torka Motor Induksi pada Mesin CNC di PT. Dirgantara Indonesia menggunakan Software PSIM

MIND Journal ◽  
2021 ◽  
Vol 6 (1) ◽  
pp. 73-88
Author(s):  
SENI NURJANAH ◽  
NASRUN HARIYANTO ◽  
SABAT ANWARI
Keyword(s):  
Induction Motor ◽  
Variable Speed ◽  
Cnc Machine ◽  
Maximum Torque ◽  
Variable Speed Drive ◽  
Cnc Machines ◽  
Constant Torque ◽  
Torque Analysis ◽  
Load Simulation ◽  
Starting Torque

AbstrakMesin CNC digunakan untuk membuat kerangka pesawat terbang, motor induksi sebagai tenaga penggerak diatur kecepatan putarnya untuk menghasilkan torka sesuai kebutuhan dikendalikan oleh VSD. Pengendalian VSD pada mesin CNC menggunakan software PSIM untuk mengetahui karakteristik mesin CNC dengan tegangan dan frekuensi yang divariasikan agar menghasilkan torka konstan. Analisis karakteristik motor induksi digunakan rangkaian pengganti dan perhitungan matematis. Untuk mengetahui rentan kerja mesin CNC maka arus starting 61,83Ampere; torka starting 23,28N.m; torka maksismum 14,1N.m; putaran sinkron 1500rpm. Pengolahan data dilakukan secara matematis, pada pengukuran mendapatkan torka 35N.m sedangkan simulasi beban 30% menghasilkan torka 4.2N.m; beban 60% menghasilkan torka 8.3N.m; beban 90% menghasilkan torka 12.5N.m. Dapat disimpulkan kendali V/f menghasilkan torka konstan sepanjang pengaturan kecepatan putar. Kata kunci: PSIM, Variable Speed Drive, Torka Motor Induksi, Mesin CNCAbstractCNC machines are used to make aircraft frames, the induction motor as the driving force is set to rotate its speed to produce torque as needed, controlled by a variable speed drive. VSD control on CNC machines uses PSIM software to determine the characteristics of CNC machines with varied voltages and frequencies to produce constant torque. Analysis of the characteristics of the induction motor used a replacement circuit and mathematical calculations to determine the working range of the CNC machine. Then the starting current is 61.83Amperes; starting torque 23.28N.m; maximum torque 14.1N.m; synchronous speed 1500rpm. Data processing is done mathematically, the measurement gets 35N.m of torque while the 30% load simulation produces 4.2N.m of torque; 60% load produces 8.3N.m torque; 90% load produces 12.5N.m of torque. It can be concluded that the V/f control produces constant torque throughout the rotational speed setting.Keywords: PSIM, Variable Speed Drive, Induction Motor Torque, CNC Machine

Variable speed drive with PFC front‐end for three‐phase induction motor

2017 ◽  
Vol 53 (16) ◽  
pp. 1139-1140 ◽  
Author(s):  
M. Gonzalez‐Ramirez ◽  
C.A. Cruz‐Villar
Keyword(s):  
Induction Motor ◽  
Variable Speed ◽  
Variable Speed Drive ◽  
Front End ◽  
Three Phase

scholarly journals Analysis Of The Effect Of Frequency Decrease On Performance On Five Phase Induction Motor

2021 ◽  
Vol 12 (2) ◽  
pp. 58-64
Author(s):  
Suranta Sitorus
Keyword(s):  
Induction Motor ◽  
High Efficiency ◽  
Induction Motors ◽  
Electric Motors ◽  
Variable Speed ◽  
Motor Speed ◽  
Variable Speed Drive ◽  
Synchronous Motors ◽  
Speed Regulation ◽  
Motor Tests

Almost 70% of the energy produced by the generator is consumed by electric motors. The use of induction motors in industry and factories is more profitable than DC or synchronous motors, one of the advantages is easy maintenance and high efficiency. On machines in the industry speed regulation is absolutely necessary. Along with the development of power electronics, this has become very easy to do, namely by supplying a motor with a variable speed drive (VSD) inverter. With the supply of a variable speed drive inverter, it is possible to adjust the motor speed by adjusting the voltage frequency.This study was conducted to determine the effect of decreasing the frequency using a variable speed drive inverter on the performance of a five-phase induction motor. Tests are carried out at a frequency of 50 Hz (grid frequency), 35, 40, 45, 50 Hz (inverter frequency) and the motor is loaded at 0.5, 1, 1.5, 2, 2.5Nm. From the research, it was concluded that, among others, the use of a variable speed drive inverter resulted in greater motor losses and the motor produced a louder sound. At the same frequency (50 Hz) the efficiency of the motor is better when supplied directly from the grid.

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