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This document discusses direct current (DC) motors. It defines a DC motor as a device that converts DC electrical energy into mechanical energy. It explains how DC motors operate based on Faraday's Law of electromagnetic induction and Fleming's left hand rule. Common applications of DC motors include in hazardous areas, industrial equipment, remote controls, and HVAC. New trends are brushless DC motors which overcome disadvantages of traditional DC motors and integrate the motor and drive electronics.
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Some materials are 'shamefully' from the Internet, so please message me if you find that your copyright is seriously infringed.
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Jan29 ppt1
- 2. DEFINITION CONSTRUCTION APPLICATIONS- main New trends in dc motor ADVANTAGES DISADVANTAGES
- 3. A DC MOTOR in simple words is a device that converts direct current(electrical energy) into mechanical energy. ELECTRICAL MECHANICAL
- 4. • FARADAY’S LAW OF ELECTRO MAGNETIC INDUCTION: whenever a conductor is moved within a magnetic field in such away that the conductor cuts across magnetic lines of flux, voltage is generated in the conductor • To determine the direction of force acting on the armature conductors of dc motor Fleming’s left hand rule
- 5. OPERATION:- when a conductor rotates in a magnetic field, it cuts flux. Then produces force.
- 8. In hazardous nuclear areas. In electric hoists ,reels , winches. In industrial applications. In remote control. In power switching applications. In HVAC mobile applications. In hydraulic applications Chemical injection applications.
- 10. WORKHOUSE. PUMP MECH I/P PRESSURISED FLUID POWER. (ELECTRIC MOTOR) BECAUSE OF IT’S, VARIABLE SPEED CONTROL FASTER RESPONSE IN TRANSIENT CONDITION.
- 12. In hazardous applications:- Type of special construction: “explosion proof”. Enclosure can withstand an explosion of a gas, vapour, dust. UL,CSA,NEC(National Electrical Code) - approved.
- 13. DC MOTORS IN REMOTE CONTROL, SWITCHING APPLICATIONS:-
- 14. In remote control:- Dc motor- serve vital role as “remote motor operator”. “TWO REMOTE CONTROL”-DC MOTOR: are SWITCHES in electrical transmission & receiver . In rail track- start place endind place.
- 15. New trend in dc motor:-
- 16. New trend: BLDC(brush less Dc Motor ):-experienced rapid adoption in market place. Overcome traditional demerits. Merits: • less maintenance. • Less cost • High operating speed • Less noise • Better torqe/wt ratio. • High performance capability.
- 17. In BLDC: TREND I:- IMPLEMENT SENSORLESS MOTOR. To reduce ripple. TREND II: INTEGRATING BLDC &DRIVE ELECTRONICS INTO A SINGLE PACKAGE. minimize interconnection cables. noise reduced increase performance.
- 19. Any queries?