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20-04-2011, 12:31 PM
Post: #1
SPEED CONTROL OF THREE PHASE INDUCTION MOTOR USING DSPIC30F4011
Presented by
Sneha.S.Angadi


.pptx  1Speed Control Of Induction seminar.pptx (Size: 139.7 KB / Downloads: 208)
“SPEED CONTROL OF THREE PHASE INDUCTION MOTOR USING DSPIC30F4011”
Introduction

Induction motors are widely used in high performance drive systems ,because of its advantages like high efficiency, very simple in construction , good power factor and it does not require any starting motor. Variable speed operations can be achieved by induction motor .Therefore ,now a days in many applications such as washing machine & all induction motors are only preffered.
Speed Control Method
Various induction motor speed control techniques such as Variable Voltage Variable frequency (VVVF) are in practice today but the most common & popularly used method of speed control technique is V/F method, where in the voltage & frequency are varied in proportion but maintaining the flux constant so that a constant torque is developed throughout the speed control range .
 Torque-Speed Characteristics
Features Of Dspic
 High performance modified RISC CPU.
 48kb of on-chip Flash program space.
 2kb of on-chip data RAM
 1kb of non-volatile data EEPROM
 4MHz-10Hz oscillator input with active PLL.
 16*16-bit working register array.
 2 UART modules with FIFO buffer.
 6-PWM output channel.
 Analog to Digital Converter with 4 S/H inputs.
DSP Vs DSPIC
 DSP is complicated than the DSPIC.
 Cost of the DSP is higher than DSPIC.
 Writing and loading of the program is easy in DSPIC
 DSPIC have on-chip peripheral device due to which the board space is reduced
 Using DSPIC, the system performance will be increased.
Literature survey
 Alfredo,Thomas A. Lipo and Donald W. Novotny, “A New Induction Motor V/f Control Method Capable of High-Performance Regulation at Low Speeds” IEEE Trans. Industry Applications, Vol. 34, No. 4 July/ August 1998.
 Z.Cucej and Svecko, “Optimal pwm controller for an inverter driven induction motor.” ” IEEE Trans., Vol. 53, No. 2 .
 K.Koga, R.Ueda and T.Sonada, “constitution of v/f control for reducing the speed error in induction motor system.” In Conf.Rec. IEEE-IAS Annu.Meeting, 1990.
 W. Slabiak and L.Lawson, “ Preceise control of three phase induction motor using single phase supply” ACSE Journal, Volume (6), Issue (3), Oct. 2006
Block diagram
 Three Phase inverter bridge
Advantages
 Simple, cost-effective & high efficiency control topology.
 V/F method not only controls the speed of the motor, it also improves the dynamic & steady state characteristics of the motor.
 Because of the absence of the high inrush current, effective life of the machine is improved.
 Maximum torque is attained within a short time.
 Due to high initial torque, the performance of the machine is improved.
 By V/F method, Precise speed control can be achieved & the average energy consumption will be reduced.
Applications
 Washing machine
 Paper mills
 Textile mills
 Refrigerator
 Conveyors
 Industrial controls
 Robotics
Expected Results
The prototype will be developed and tested for different set speeds and loads from which different waveforms will be observed in DSO. Also line to line current can be observed. The proposed work is expected to show that by varying voltage and frequency in proportion speed control of three phase induction motor is acheived.
18-05-2011, 01:24 PM
Post: #2
RE: SPEED CONTROL OF THREE PHASE INDUCTION MOTOR USING DSPIC30F4011
hi
which control method u have used
Angel
21-05-2011, 08:20 AM
Post: #3
RE: SPEED CONTROL OF THREE PHASE INDUCTION MOTOR USING DSPIC30F4011
Here, the V/F method of speed control is used. For details on the V/F technique of speed control see:
http://www.seminarprojects.com/Thread-sp...ique-refer
20-07-2011, 07:26 PM
Post: #4
RE: SPEED CONTROL OF THREE PHASE INDUCTION MOTOR USING DSPIC30F4011
thanks full for you give me projects
21-07-2011, 09:50 AM
Post: #5
RE: SPEED CONTROL OF THREE PHASE INDUCTION MOTOR USING DSPIC30F4011
you can refer these page details of "SPEED CONTROL OF THREE PHASE INDUCTION MOTOR USING DSPIC30F4011"link bellow

http://www.seminarprojects.com/Thread-sp...6#pid51826
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