खनन और खनिज उद्योगों में पर्यावरणीय स्थिरता विषय पर विशेषज्ञों का मंथन पर्यावरणीय स्थिरता मानव समाज के निरन्तर अस्तित्व, समृद्धि और स्वास्थ्य के लिए मूलभूत शर्त है। हमारी न्यू जनरेशन को स्पीड और टेक्नोलॉजी पर ध्यान केंद्रित करना होगा ताकि भविष्य को सुनहरा बनाया जा सके। उक्त विचार मुख्य अतिथि श्री एमपी सिंह, प्रधान मुख्य अभियंता, केंद्रीय विद्युत प्राधिकरण विद्युत मंत्रालय भारत सरकार, नई दिल्ली ने व्यक्त किए श्री सिंह भूपाल नोबल्स स्नातकोत्तर महाविद्यालय में भूविज्ञान विभाग द्वारा "खनन और खनिज उद्योगों में पर्यावरणीय स्थिरता" विषय पर आयोजित दो दिवसीय राष्ट्रीय कॉन्फ्रेंस के समापन पर बोल रहे थे। दो दिवसीय राष्ट्रीय कान्फ्रेंस का भव्य समापन सम्मानित अतिथि प्रो विनोद अग्रवाल सदस्य, भारत सरकार नई दिल्ली स्थित MOEFCC की विशेषज्ञ मूल्यांकन समिति, (सि एण्ड टीपी) अपने उद्बोधन में कहा कि पर्यावरण स्थिरता सरकार और समाज दोनों की जिम्मेदारी है। वर्तमान में खनन उद्योग विभिन्न प्रावधानों एवं कानूनों के तहत कार्य कर रहा है ताकि पर्यावरण को सुरक्षित रखा जा सके। आयोजन सचिव डॉ. हेमंत सेन न...
Introduction of power electronics
- Power electronics belongs partly to power engineers and partly to electronics engineers. It means it is the combination of power engineering and electronics engineering.
- Power engineering is mainly concerned with generation, transmission, distribution and utilization of electric energy at high efficiency.
- The simple engineering is guided by distortion-less production, transmission and reception of data and signals of very low power level of the order of a few watts, or milliwatts without much consideration of the efficiency.
- Power electronics is also known as industrial electronics.
- The apparatus associated with power engineering is based mainly on electromagnetic principles, whereas in electronics engineering they are based on physical phenomenon in vacuum, gases/vapours and semiconductors.
- This subject concerns the application of electronic-principles into situations that are rated at power levels rather than signal levels.
- It may also be defined as a subject that deals with the apparatus and equipment working on the principle of electronics, but rated at power level, not at signal level.
Applications of Power electronics
Aerospace
- Space shuttle power supplies
- Satellite power supplies
- Aircraft power systems
Commercial
- Advertising
- Heating
- Air conditioning
- Central refrigeration
- Computer and office equipment
- Uninterruptible power supplies
- Elevators
- Light dimmers and flashers
Industrial
- Arc and industrial furnace
- Blowers and fans
- Pump and compressors
- Industrial lasers
- Transformers
- Tap chargers
- Rolling mills
- Textile mills
- Excavators
- Cement mills
- Welding
Residential
- Air-conditioning
- Cooking
- Lighting
- Space heating
- Refrigerators
- Electric-door openers
- Dryers
- Fans
- Personal computers
- Vacuum cleaners
- Washing and sewing machines
- Light dimmers
- Food mixers
- Electric blankets
- Food warmer trays
Telecommunication
- Battery chargers
- Power supplies (dc or UPS)
Transportation
- Battery chargers
- Electric locomotives
- Street cars
- Trolley buses
- Subways
- Automotive electronics
Utility system
- High voltage dc transmission (HVDC)
- Excitation systems
- Static circuit breakers
- Fans and boiler-feed pumps
- Supplementary energy systems (solar, wind)
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