Novel Cascaded H-Bridge Multilevel Inverter With Harmonics
... voltage. Second, Selective Harmonics Elimination Stepped Waveform (SHESW) method is implemented to eliminate the lower order harmonics. Fundamental switching scheme is used to control the power electronics switches in the inverter. The proposed topology is suitable for any number of levels. When the ...
... voltage. Second, Selective Harmonics Elimination Stepped Waveform (SHESW) method is implemented to eliminate the lower order harmonics. Fundamental switching scheme is used to control the power electronics switches in the inverter. The proposed topology is suitable for any number of levels. When the ...
Objective type questions and answers
... Variable torque loads include centrifugal pumps and fans which make up the majority of large plant loads. Thus, theoretically, for 50% of full load requirement the power input needed would be less than 13% of full load power. In a centrifugal pump when the flow discharge is reduced to 70% of the rat ...
... Variable torque loads include centrifugal pumps and fans which make up the majority of large plant loads. Thus, theoretically, for 50% of full load requirement the power input needed would be less than 13% of full load power. In a centrifugal pump when the flow discharge is reduced to 70% of the rat ...
7 With the protective cover closed, it is not possible to set the
... transformation ratio between the primary and secondary voltages of the transformer. Note that if Digipact display modules are used, the rated distribution-system voltage must be entered. ...
... transformation ratio between the primary and secondary voltages of the transformer. Note that if Digipact display modules are used, the rated distribution-system voltage must be entered. ...
Remote Lens Control System
... The zoom function is implemented by a Micro Force control. It can be directly connected to the Hand Unit using a bracket or operated remotely using a cable. The camera may be started either from the Micro Force or from the Hand Unit. A unique scale adjustment system makes set-up extremely quick. Any ...
... The zoom function is implemented by a Micro Force control. It can be directly connected to the Hand Unit using a bracket or operated remotely using a cable. The camera may be started either from the Micro Force or from the Hand Unit. A unique scale adjustment system makes set-up extremely quick. Any ...
Actuators - University of Detroit Mercy
... electrical device on or off • Solenoid type devices: current through a coil activates an iron core that controls a hydraulic or pneumatic valve • Drive systems: D.C. and A.C. motors, where a current through a motor produces rotation ...
... electrical device on or off • Solenoid type devices: current through a coil activates an iron core that controls a hydraulic or pneumatic valve • Drive systems: D.C. and A.C. motors, where a current through a motor produces rotation ...
PDF document
... Although we used the word "switch," in fact transistors are used, which turn on and off in response to a control signal and supply the necessary current to the motor drive. With current passing through transistors, it is necessary to take transistor power loss into account. Bipolar transistors are u ...
... Although we used the word "switch," in fact transistors are used, which turn on and off in response to a control signal and supply the necessary current to the motor drive. With current passing through transistors, it is necessary to take transistor power loss into account. Bipolar transistors are u ...
Multiphase Brushless DC Motor
... the sensor goes HIGH when the rotor’s North Pole passes by, and goes LOW when the rotor’s South Pole passes by. ...
... the sensor goes HIGH when the rotor’s North Pole passes by, and goes LOW when the rotor’s South Pole passes by. ...
magnetic
... field induces a voltage pulse in the coil. Amplitude and frequency of induced voltage pulse depends upon rate of change of magnetic flux. Magnetic flux produced by magnet can be altered by bringing any external magnetic material near to the magnetic field of magnet which will induce voltage in coil ...
... field induces a voltage pulse in the coil. Amplitude and frequency of induced voltage pulse depends upon rate of change of magnetic flux. Magnetic flux produced by magnet can be altered by bringing any external magnetic material near to the magnetic field of magnet which will induce voltage in coil ...
DC to AC Conversion (INVERTER) - ENCON
... At any switching, voltage step size across the series string = 0.5 Vd permits series connection of devices without exceeding 0.5 ...
... At any switching, voltage step size across the series string = 0.5 Vd permits series connection of devices without exceeding 0.5 ...
CellD 600 DPS 2900B-48-9/12 19IN
... series can meet any of your size and location requirements. ...
... series can meet any of your size and location requirements. ...
1 - Portal UniMAP
... 8. The armature winding of a dc motor has 320 conductors, only 70 % of which lie directly under the poles, where the flux density B = 1.1 T. The armature diameter is 26 cm and its length is 18 cm. The conductor current is 12 A. Determine: a) The total force created by the conductor. b) The torque de ...
... 8. The armature winding of a dc motor has 320 conductors, only 70 % of which lie directly under the poles, where the flux density B = 1.1 T. The armature diameter is 26 cm and its length is 18 cm. The conductor current is 12 A. Determine: a) The total force created by the conductor. b) The torque de ...
Lab #7
... – The multimeter is used to measure the RMS (root mean square) voltage (or effective DC voltage because it supplies as much power as a DC voltage source would.) – The DMM can also measure the frequency of the source. ...
... – The multimeter is used to measure the RMS (root mean square) voltage (or effective DC voltage because it supplies as much power as a DC voltage source would.) – The DMM can also measure the frequency of the source. ...
1)______ types of Induction Motor are widely used. A. SlipringIM B
... 65) In the integral control of the single area system frequency error is reduced to zero. Then A. Integrator output & speed changer position attain a constant value. B. Integrator output decreases but speed changer position moves up. C. Integrator output increases but speed changer position also bec ...
... 65) In the integral control of the single area system frequency error is reduced to zero. Then A. Integrator output & speed changer position attain a constant value. B. Integrator output decreases but speed changer position moves up. C. Integrator output increases but speed changer position also bec ...
95MET-4
... NB : (1)All Questions are Compulsory (2)All Questions carry equal marks (3)Neatness in handwriting and clarity in expression carries weightage 1. Describe an electric telegraph system and describe its operation. 2. (a) Draw a simple battery charging circuit showing a battery being charged from a sin ...
... NB : (1)All Questions are Compulsory (2)All Questions carry equal marks (3)Neatness in handwriting and clarity in expression carries weightage 1. Describe an electric telegraph system and describe its operation. 2. (a) Draw a simple battery charging circuit showing a battery being charged from a sin ...
Document
... voltage regulator modules (VRMs) for high-performance ICs that operates with low supply voltage and high current. Tighter voltage regulation, high efficiency, and accommodating load transient are key factors in the design of the switch-mode power supplies (SMPS), in particular for high step-down c ...
... voltage regulator modules (VRMs) for high-performance ICs that operates with low supply voltage and high current. Tighter voltage regulation, high efficiency, and accommodating load transient are key factors in the design of the switch-mode power supplies (SMPS), in particular for high step-down c ...
Document
... Matrix Converters are direct AC/AC power conversion devices that are capable of generating variable frequency and amplitude voltages at their output terminals without using bulky and limited lifetime electrolytic capacitors. This important feature allows for the design of high reliability high p ...
... Matrix Converters are direct AC/AC power conversion devices that are capable of generating variable frequency and amplitude voltages at their output terminals without using bulky and limited lifetime electrolytic capacitors. This important feature allows for the design of high reliability high p ...
Mechanical_Engineering_Laboratory_Equipments
... Automated computerized Fuel Cell Trainer for the Production of electrical and thermal energy The system includes: 1. 1 Stack consisting of separate cells connected in series. 2. Cells type PEMFC. 3. Feeding and exhaust line of hydrogen. 4. Air/cooling fan with speed control. 5. Inverter for using th ...
... Automated computerized Fuel Cell Trainer for the Production of electrical and thermal energy The system includes: 1. 1 Stack consisting of separate cells connected in series. 2. Cells type PEMFC. 3. Feeding and exhaust line of hydrogen. 4. Air/cooling fan with speed control. 5. Inverter for using th ...
The LCD panel power
... Boost converter power switch tube, with $350 A peak currents on it, Adopts fixed frequency peak current mode control technology, combined with external frequency compensation function that the rapid response characteristic and the load to compensate, Using high-speed switching frequency, 1.2 MHz gre ...
... Boost converter power switch tube, with $350 A peak currents on it, Adopts fixed frequency peak current mode control technology, combined with external frequency compensation function that the rapid response characteristic and the load to compensate, Using high-speed switching frequency, 1.2 MHz gre ...
Variable-frequency drive
A variable-frequency drive (VFD) (also termed adjustable-frequency drive, variable-speed drive, AC drive, micro drive or inverter drive) is a type of adjustable-speed drive used in electro-mechanical drive systems to control AC motor speed and torque by varying motor input frequency and voltage.VFDs are used in applications ranging from small appliances to the largest of mine mill drives and compressors. However, around 25% of the world's electrical energy is consumed by electric motors in industrial applications, which are especially conducive for energy savings using VFDs in centrifugal load service, and VFDs' global market penetration for all applications is still relatively small. That lack of penetration highlights significant energy efficiency improvement opportunities for retrofitted and new VFD installations.Over the last four decades, power electronics technology has reduced VFD cost and size and has improved performance through advances in semiconductor switching devices, drive topologies, simulation and control techniques, and control hardware and software.VFDs are available in a number of different low- and medium-voltage AC-AC and DC-AC topologies.