ppt - EC - Unit 7 - Linear Power Supply
... 1. The unregulated DC is chopped at a high frequency (using transistor / MOSFET / IGBT) 2. The chopped waveform is then rectified and filtered to get the desired DC voltage. ...
... 1. The unregulated DC is chopped at a high frequency (using transistor / MOSFET / IGBT) 2. The chopped waveform is then rectified and filtered to get the desired DC voltage. ...
Document
... existing control strategies implement PI compensators, with slow response times, in their voltage and current loops. Alternatively, computationally expensive nonlinear controllers can be chosen to generate input currents with high power factor and low total harmonic distortion (THD), but they may ne ...
... existing control strategies implement PI compensators, with slow response times, in their voltage and current loops. Alternatively, computationally expensive nonlinear controllers can be chosen to generate input currents with high power factor and low total harmonic distortion (THD), but they may ne ...
EE_ece_3rd - Jasdev Singh Sandhu Group of Institutes
... Explain the working of shaded pole motor with neat and clean diagram. Explain the construction and working of hysteresis motor. Explain the construction, principle and working of Repulsion motor. What is servo motor? Explain various types of Servo motors. What is Stepper motor? Explain various types ...
... Explain the working of shaded pole motor with neat and clean diagram. Explain the construction and working of hysteresis motor. Explain the construction, principle and working of Repulsion motor. What is servo motor? Explain various types of Servo motors. What is Stepper motor? Explain various types ...
Electric Motor Data P/N 48560
... Upon receipt of your motor, visually inspect it for damage that may have occurred in shipment or storage. Turn the shaft manually to be sure that it runs freely, and check the nameplate data to be sure that specifications are in accordance with your order. MOTOR CONTROL DEVICES Use of a suitable mot ...
... Upon receipt of your motor, visually inspect it for damage that may have occurred in shipment or storage. Turn the shaft manually to be sure that it runs freely, and check the nameplate data to be sure that specifications are in accordance with your order. MOTOR CONTROL DEVICES Use of a suitable mot ...
Applying PMDC motors
... brushes and commutators, a high temperature insulation system, or a larger motor. It may cost more, but a control that reduces form factor can reduce heating effects in the motor. Because PM motors lack armature interaction, they can generate high momentary starting and acceleration torques, typical ...
... brushes and commutators, a high temperature insulation system, or a larger motor. It may cost more, but a control that reduces form factor can reduce heating effects in the motor. Because PM motors lack armature interaction, they can generate high momentary starting and acceleration torques, typical ...
Presentation on Cornell Dubilier
... input and output filtering. High Ripple current. 945U Power Film series. For replacement of screw terminal capacitors in high ripple current power inverters. Applications include inverters for renewable energy (wind and solar), motor drives, RF generators, drive systems, traction. CX, SX Aluminum Po ...
... input and output filtering. High Ripple current. 945U Power Film series. For replacement of screw terminal capacitors in high ripple current power inverters. Applications include inverters for renewable energy (wind and solar), motor drives, RF generators, drive systems, traction. CX, SX Aluminum Po ...
TERMINAL CHARACTERISTIC of a SHUNT DC MOTOR
... INTRODUCTION • The same physical dc machine can operate as either motor or a generator & it depends on direction of power flow • Introduction to DC motors: • dc motors have a significant fraction of machinery purchased each year through 1960s • Reasons: existence of dc power system in cars, trucks a ...
... INTRODUCTION • The same physical dc machine can operate as either motor or a generator & it depends on direction of power flow • Introduction to DC motors: • dc motors have a significant fraction of machinery purchased each year through 1960s • Reasons: existence of dc power system in cars, trucks a ...
25741_ENERGY_CONVERSION_21
... INTRODUCTION • The same physical dc machine can operate as either motor or a generator & it depends on direction of power flow • Introduction to DC motors: • dc motors have a significant fraction of machinery purchased each year through 1960s • Reasons: existence of dc power system in cars, trucks a ...
... INTRODUCTION • The same physical dc machine can operate as either motor or a generator & it depends on direction of power flow • Introduction to DC motors: • dc motors have a significant fraction of machinery purchased each year through 1960s • Reasons: existence of dc power system in cars, trucks a ...
Calculation of Power factor Correction
... from some other a.c. source, then the stator winding will be relieved of exciting current and the power factor of the motor can be improved. This job is accomplished by the phase advancer which is simply an a.c. exciter. The phase advancer is mounted on the same shaft as the main motor and is connec ...
... from some other a.c. source, then the stator winding will be relieved of exciting current and the power factor of the motor can be improved. This job is accomplished by the phase advancer which is simply an a.c. exciter. The phase advancer is mounted on the same shaft as the main motor and is connec ...
The following changes affect the APP60S Service Power Supply
... The 60/75/90 VAC switch is used to select output voltage. Be sure to have correct output voltage settings selected before operation of power supply. Do not rotate switch when unit is in operation, always remove power from power supply when selecting output voltages. 2.6.A ON / OFF Switch The input b ...
... The 60/75/90 VAC switch is used to select output voltage. Be sure to have correct output voltage settings selected before operation of power supply. Do not rotate switch when unit is in operation, always remove power from power supply when selecting output voltages. 2.6.A ON / OFF Switch The input b ...
AC vs DC AC Voltage stands for Alternating Current. The flow of elec
... “What is the difference between AC & DC?” ...
... “What is the difference between AC & DC?” ...
Precision Variable Frequency Drive May 07-13
... As a drive for a low power AC synchronous electric motor. This drive was not considered to be used on any other type of electric motor except for a synchronous design. This drive shall not be used to power any control circuits. ...
... As a drive for a low power AC synchronous electric motor. This drive was not considered to be used on any other type of electric motor except for a synchronous design. This drive shall not be used to power any control circuits. ...
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.