Interior Permanent Magnet (IPM) motor drive
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IPM is an interior Permanent magnet with self sensing and gets efficiency comparable to PMSM at much lower cost. Sensorless Vector control of IPM ensures better performance at low speeds, smoother operation, and position control possible.
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Permanent Magnet Synchronous motor (PMSM) or Permanent Magnet AC motor:
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Types of PMSM Motor.
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applied in several areas such as generation, traction, automobiles, robotics and aerospace
technology. Basically PMSG topology has been beneficial for slow speed and variable speed
operation and steady state output power produced in operation. PMSG is a part of
synchronous machine family, so its construction features almost equivalent to synchronous
machine.
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armature winding are in the inner part of stator that is electrically connected to the load.
Armature winding consists of the set of three conductors which has phase difference 1200
apart to each other and providing a uniform force or torque on the generator’s rotor. To
operate PMGS, it is connected to wind turbine through a shaft without gear box and rotate at
slow speed. This uniform torque produced by the resultant magnetic flux which induces
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The document discusses various braking methods for induction motors, including regenerative braking, plugging, and different types of dynamic braking. Regenerative braking occurs when the rotor speed exceeds synchronous speed, causing power to flow in the reverse direction. Plugging involves reversing the phase sequence of the supply to change operation from motoring to braking. Dynamic braking disconnects one phase of the supply or connects the motor to a DC supply, causing the motor to act as a generator and dissipate energy as heat.
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Z. H. College of Engg. & Technology, Aligarh Muslim University, Aligarh.
Missing materials will be uploaded shortly.
Please comment and feel free to ask anything related. Thanks!
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This document summarizes the modeling of a permanent magnet synchronous motor (PMSM) in Simulink. It describes how a PMSM is modeled in the rotor synchronous reference frame using Park equations. It discusses how the electromagnetic torque produced by the motor depends on the quadrature stator current. It also describes how the speed is controlled by controlling the electromagnetic torque through regulating the quadrature current. Finally, it presents the simulation results for the currents, torque, and speed of the modeled PMSM motor.
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1) The document discusses models for permanent magnet motor drives, specifically the permanent magnet synchronous motor (PMSM) and brushless DC motor (BDCM).
2) It explains that the PMSM has a sinusoidal back EMF and requires sinusoidal currents, while the BDCM has a trapezoidal back EMF and requires rectangular currents.
3) The paper argues that a d-q axis model is suitable for modeling the PMSM, while an ABC phase variable model should be used for the BDCM due to its non-sinusoidal inductances.
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Successful companies don’t talk about their “secret weapon”, fearful that competitors will discover and use the technology. While the trend in automation is towards integration, many machine builders have quietly and covertly found success with fully integrated motion control and the numerous benefits and cost savings it provides. And we’re going to let you in on their advantage.
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Projects completed and value addition. controltrix.com
List of projects of past power electronics, control system and motor drives related projects with value addition/expertise @ controltrix.com
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C Ontrol De Motores Pic
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Pensando nas aplicações que necessitam de controle de motor e na complexidade envolvida, a Microchip tem desenvolvido diversos componentes, algoritmos e ferramentas para ajudar no desenvolvimento para o produto ir para o mercado em perfeito funcionamento e com menor tempo de desenvolvimento. Nesse webinar apresentaremos como você pode desenvolver facilmente aplicações para controle de motores BLCD e de indução trifásico usando os algoritmos FOC, Zero-Speed/Maximum-Torque Control, six step e v/f, com os softwares e hardware da Microchip.
Assista a gravação em: https://embarcados.com.br/webinar-controle-de-motores-bldc-e-de-inducao-trifasico/
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Abb white paper_dtc_a4_20150414
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Final presentation
This document proposes a system for the automatic remote control of an induction motor using a GSM-based system. Sensors will monitor the motor's line voltage, current, and temperature and send the data to a microcontroller for analysis. If any parameters exceed safe limits, the system will send an SMS alert and sound an alarm. It will provide protection against overvoltage, overcurrent, and overload. The goal is to develop a low-cost, compact system that allows remote two-way control and monitoring of the motor without needing highly skilled personnel.
Microprocessor in washing machine
Microcontrollers are used in washing machines to control operations digitally and precisely. They allow for digital interfaces instead of knobs, and control timing profiles, motor speed, water temperature and more. The microcontroller monitors input states and controls outputs like motor speed and water flow. It uses techniques like vector control to efficiently control multiple motors and torque based on the load. This results in more efficient operation than earlier analog systems.
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Power Factor is a measure of how efficiently electrical power is consumed. In the ideal world Power Factor would be unity (or 1). Unfortunately in the real world Power Factor is reduced by highly inductive loads to 0.7 or less. This induction is caused by equipment such as lightly loaded electric motors and fluorescent lighting ballasts and welding sets, etc. Three phase power factor can be corrected using different approaches like sine wave control, vector control, single cycle control or Vienne Bridge Rectifier.
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Interior Permanent Magnet (IPM) motor drive
- 1. copyright 2011 controltrix corp www. controltrix.com www.controltrix.com IPM motor drive
- 2. copyright 2011 controltrix corp www. controltrix.com What is IPM? • Interior permanent magnet motor • Magnets are buried inside the rotor • Permanent magnet synchronous motor and switched reluctance motor together • Reduces magnet size (rare earth /expensive) • Some portion comes from reluctance torque
- 3. copyright 2011 controltrix corp www. controltrix.com • Inductance varies with rotor position • Allows self sensing (encoder less) • Gets efficiency comparable to PMSM at much lower cost What is IPM?. Fig: Interior permanent magnet motor
- 4. copyright 2011 controltrix corp www. controltrix.com Sensor less Vector control of PMSM • Required for best efficiency (meeting green norms etc) • Complex math/DSP operations • Only velocity control is possible • Rotor position is required for vector control • Sliding mode controller (SMC) estimates position (in absence of encoder)
- 5. copyright 2011 controltrix corp www. controltrix.com Sensor less Vector drive system diagram
- 6. copyright 2011 controltrix corp www. controltrix.com • Low speed operation is not possible • Field weakening allows operation beyond rated speed • Field trading torque limit for speed • Systematic analytical field weakening algorithms still required Sensor less Vector control of PMSM.
- 7. copyright 2011 controltrix corp www. controltrix.com Sensor less Vector control of PMSM control block diagram
- 8. copyright 2011 controltrix corp www. controltrix.com SL Vector Control of IPM (Mods.) • More mathematically involved (trigonometric functions) • Id and Iq references need to optimally generated • Field weakening • SMC may be modified for IPM but there are 2 more options
- 9. copyright 2011 controltrix corp www. controltrix.com SL Vector Control of IPM (Mods.). Option 1. Better performance : • Gopinath observer • Lower speed (than SMC) performance is possible • Smoother operation • Calculable gains without trial and error
- 10. copyright 2011 controltrix corp www. controltrix.com SL Vector Control of IPM (Mods.).. Option 2. Best performance : • Self sensing technology (using inductance variation dependence of position ) to sense rotor position + Kalman filtering • Fixed point MIPS optimization required • Near zero speed operation possible • Position control is possible • Nearly comparable to encoder based vector control servo drive
- 11. copyright 2011 controltrix corp www. controltrix.com Summary • Demonstrably Better performance (efficiency, low speed performance, position control, system cost and DSP capability demonstration) • Next generation motor drives (compressors, air conditioning, refrigeration)
- 12. copyright 2011 controltrix corp www. controltrix.com How our expertise can help • Proprietary algorithms allow 16 bit fixed point MIPs optimized implementation of self sensing + Kalman filter • Simulation and analysis • Implementation on MCHV board or other custom hardware • Performance Testing (test case generation and result analysis) • Hardware design consulting • Research and development
- 13. copyright 2011 controltrix corp www. controltrix.com How our expertise can help • Guaranteed Best possible performance and support • Competitive prices • Proto development using 3rd party EMS/EDS
- 14. copyright 2011 controltrix corp www. controltrix.com Thank You www.controltrix.com