Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
RECTIFIERS AND INVERTERS
Rectification is the process of conversion of alternating input voltage to direct output voltages. Converters are controlled rectifiers which convert constant ac voltage to variable de output voltage. Since the diode rectifiers are uncontrolled rectifier because it gives fixed output voltages only whereas in controlled rectifiers thyristors are used are used to control the output voltage of converter by varying the delay or firing angle. These are phase controlled rectifiers which are simple less expensive and highly efficient. These are also called ac de converters and are used extensively in industrial applications for example steel rolling mills paper mills pining presses textile mills traction system magnet power suppliers Hvdc transmission variable speed drives portable hand tool drives electro chemical and electrometallurgical processes etc.
The reverse process of rectification is know as inversion. An inverter converts fixed de voltage to a variable ac voltage and variable frequency. Ups induction heading , HVDC power transmission variable frequency drives electric vehicle drives and air conditioning are some of important application of inverter. An power when main power is not available. When main power is restored a rectifier is uded to supply DC power to a higher to recharge the batteries. Inverters convert low frequency main AC power is first rectified to provide DC power. The inverter then changes the Dc power to high frequency AC power. With ?HVDC power transmission AC power is rectified and high voltage DC power is transmitted to another location. At the receiving location an inverter n a static inverter plant converts the power back to AC. A variable frequency drive controls the operating speed of an AC motor. a an inverter provides the controlled power. Inmost cases the variable frequency drive includes a rectifier so the DC power for the inverter can be provided from main AC power. Since an inverter is the key component variable frequency driver are sometime called inverter drives of just inverter. Adjustable speed motor control inverters are currently used to power the traction motor in some electric locomotives and diesel electric locomotives as well as some battery electric vehicles and hybrid electric highway vehicles. An air conditioner bearing the inverter tag uses a variable frequency drive to control the speed of the motor and thus the compressor.
explain working pricipal of nagative resistance oscillator
Int r insic Material A perfect semiconductor crystal with no impurities or lattice defects. No carriers at 0 K, since the valence band is completely full and t
A pure sine wave along with a frequency of 100Hz is sampled at 150Hz. At which point one of the subsequent frequencies would you expect an alias? A) 75Hz B) 100Hz C) 150Hz
The five addressing modes are given below: Immediate, Register, Direct, Implied addressing modes Register indirect,
. In successive-approximation A/D converter, offset voltage equal to 1/2LSB is added to theD/A converter’s output. This is done to
how to connect some DG together?
what are theold and new technologies of manufaturing of the harvestor. atleast of five components
using a combination of uniselectors and two motion selectors, draw a schematic of thousand line exchange and explain its working
A three-phase, 4160 V, 60 Hz, 3000 kVA generator supplies the following three phase loads: A 00 kVA at .7 pf lagging, D 00 kVA at .9 pf lagging, and C 50 kVA at unity pf.
what is Zener diode ? give some uses of it .
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd