Asian Power Electronics Journal
... power filters do not produce perfect waveforms, which strongly depend on the semiconductors switching frequency. Voltage or current converters as they generate discrete output waveforms, force the use of machines with special isolation, and in some applications large inductances connected in series ...
... power filters do not produce perfect waveforms, which strongly depend on the semiconductors switching frequency. Voltage or current converters as they generate discrete output waveforms, force the use of machines with special isolation, and in some applications large inductances connected in series ...
here
... However, unlike the technique used for testing transmission lines, the rotor winding is a very imperfect transmission line and produces a large number of reflections at each change in impedance between the sections of conductors inside the radial slots and the sections in the cross-over end regions. ...
... However, unlike the technique used for testing transmission lines, the rotor winding is a very imperfect transmission line and produces a large number of reflections at each change in impedance between the sections of conductors inside the radial slots and the sections in the cross-over end regions. ...
Kollmorgen S600 Servo Drive Instruction Manual S601-620
... About this manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hints for the online edition (PDF format) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
... About this manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hints for the online edition (PDF format) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
Power converter optimal control for wind energy conversion systems
... In this work, a control system for the power converter based on H∞ control theory and Linear Parameter-Varying (LPV) controllers is proposed. Optimal control theory provides a framework where more options can be taken in consideration during the controller design stage. In particular, H∞ control the ...
... In this work, a control system for the power converter based on H∞ control theory and Linear Parameter-Varying (LPV) controllers is proposed. Optimal control theory provides a framework where more options can be taken in consideration during the controller design stage. In particular, H∞ control the ...
PowerFlex 755 - Rockwell Automation
... Utilize switching logic power supply operating from the DC bus. Incorporate phase to phase and phase to ground MOV protection on the AC input line. e) Utilize gold plated plug-in connections on printed circuit boards. f) Microprocessor based inverter logic shall be isolated from power circuits. g) U ...
... Utilize switching logic power supply operating from the DC bus. Incorporate phase to phase and phase to ground MOV protection on the AC input line. e) Utilize gold plated plug-in connections on printed circuit boards. f) Microprocessor based inverter logic shall be isolated from power circuits. g) U ...
Sensorless Start-up and Control of Permanent Magnet Synchronous
... The master thesis is a further investigation of the start-up procedure of a permanent magnet synchronous motor operated by variable frequency drive without position feedback via a long cable and transformers; as proposed in the specialization project, fall of 2013. The challenge is how to avoid larg ...
... The master thesis is a further investigation of the start-up procedure of a permanent magnet synchronous motor operated by variable frequency drive without position feedback via a long cable and transformers; as proposed in the specialization project, fall of 2013. The challenge is how to avoid larg ...
40in Gas Furnace Ser..
... a call for heat takes place and the burners ignite, flame envelopes the flame rod. The flame is a conductor and can conduct a very small amount of current. The voltage potential at the flame rod now has a conductor path through the flame. Since the flame rod is much smaller than the burner ground ar ...
... a call for heat takes place and the burners ignite, flame envelopes the flame rod. The flame is a conductor and can conduct a very small amount of current. The voltage potential at the flame rod now has a conductor path through the flame. Since the flame rod is much smaller than the burner ground ar ...
Causes and Effects of Transient Voltages
... 1. Mid-to-Low Frequency Transients, like lightning and utility capacitor switching propagate (travel) very well on electrical systems. Higher amplitudes tend to be damped by the building's distribution system at voltages above 16,000 volts. There is almost no damping below 10,000 volts. 2. High Fr ...
... 1. Mid-to-Low Frequency Transients, like lightning and utility capacitor switching propagate (travel) very well on electrical systems. Higher amplitudes tend to be damped by the building's distribution system at voltages above 16,000 volts. There is almost no damping below 10,000 volts. 2. High Fr ...
coverstory - Haas Automation®, Inc.
... a future. But the bottom line is this: They have become part of a working family. “It’s not uncommon for high school students to think they have no need for good grades or continued studies in the so-called basics because they have chosen a career in metalworking,” says Goodreau. “But given the chan ...
... a future. But the bottom line is this: They have become part of a working family. “It’s not uncommon for high school students to think they have no need for good grades or continued studies in the so-called basics because they have chosen a career in metalworking,” says Goodreau. “But given the chan ...
PROTECTIVE RELAYING FOR TRANSMISSION AND
... They are preferably where system fault current various widely (due to change in source impedance). There being relatively small change in time with variation fault current, the grading of several relays in series is easier & surer. These relays are also preferred on locations where high transient pe ...
... They are preferably where system fault current various widely (due to change in source impedance). There being relatively small change in time with variation fault current, the grading of several relays in series is easier & surer. These relays are also preferred on locations where high transient pe ...
20144109 Modeling and Control of Radial Force - Hori
... speed, frequency, and vibration level is shown. As rotation speed increases, the frequency of the vibration also inreases. ...
... speed, frequency, and vibration level is shown. As rotation speed increases, the frequency of the vibration also inreases. ...
Insulating and Switching Media in Medium Voltage
... (LBS) and contactors. There are two fundamental designs for CBs; namely, Axial Magnetic Field (AMF, to keep the arc diffused) and Radial Magnetic Field (RMF, to produce a rotating arc along the contacts). In practice three different designs can be distinguished, if the applied contact material is al ...
... (LBS) and contactors. There are two fundamental designs for CBs; namely, Axial Magnetic Field (AMF, to keep the arc diffused) and Radial Magnetic Field (RMF, to produce a rotating arc along the contacts). In practice three different designs can be distinguished, if the applied contact material is al ...
Twelve-Sided Polygonal Voltage Space Vector
... vector OQ will have a magnitude equal to 1.225 Vdc . This can be easily verified from the geometry in Fig. 2. The voltage space vector “OQ” is generated from INV-A alone and is independent of the switching state of INV-B. So for the voltage space vector generation OQ, the poles of INV-B can be in an ...
... vector OQ will have a magnitude equal to 1.225 Vdc . This can be easily verified from the geometry in Fig. 2. The voltage space vector “OQ” is generated from INV-A alone and is independent of the switching state of INV-B. So for the voltage space vector generation OQ, the poles of INV-B can be in an ...
Operating Instructions 221098E, V 7.5a
... The warnings, instructions and hints in the margin must be observed under any circumstances: C Danger to health and life due to electrical shock or motion of the drive. When disconnecting the device from the mains, wait for at least 2 minutes until the DC-bus capacitors have discharged before carryi ...
... The warnings, instructions and hints in the margin must be observed under any circumstances: C Danger to health and life due to electrical shock or motion of the drive. When disconnecting the device from the mains, wait for at least 2 minutes until the DC-bus capacitors have discharged before carryi ...
Quickie® Pulse™ Service Manual
... • Store each Printed Circuit Board in an antistatic bag with an external cushioning bubble-wrap layer until assembled to wheelchair. Antistatic bag must have metal content to protect the printed circuit board. Gray bag protects from ESD, pink bag or bubble wrap does not protect as well. • Always wea ...
... • Store each Printed Circuit Board in an antistatic bag with an external cushioning bubble-wrap layer until assembled to wheelchair. Antistatic bag must have metal content to protect the printed circuit board. Gray bag protects from ESD, pink bag or bubble wrap does not protect as well. • Always wea ...
SENSORLESS SERVO DRIVE UNIT FR-E700EX INSTRUCTION MANUAL (BASIC) FR-E720EX-0.1K to 3.7K
... equipment in case of drive unit failure. When the breaker on the drive unit input side trips, the wiring must be checked for fault (short circuit), and internal parts of the drive unit for a damage, etc. The cause of the trip must be identified and removed before turning ON the power of the breake ...
... equipment in case of drive unit failure. When the breaker on the drive unit input side trips, the wiring must be checked for fault (short circuit), and internal parts of the drive unit for a damage, etc. The cause of the trip must be identified and removed before turning ON the power of the breake ...
Fundamental Relay-Operating Principles
... be said later about "directional control" of relays; suffice it to say here that plunger or attracted-armature relays do not lend themselves to directional control nearly as well as induction-type relays, which will be considered later. EFFECT OF TRANSIENTS Because these relays operate so quickly an ...
... be said later about "directional control" of relays; suffice it to say here that plunger or attracted-armature relays do not lend themselves to directional control nearly as well as induction-type relays, which will be considered later. EFFECT OF TRANSIENTS Because these relays operate so quickly an ...
Brushed DC electric motor
A brushed DC motor is an internally commutated electric motor designed to be run from a direct current power source. Brushed motors were the first commercially important application of electric power to driving mechanical energy,and DC distribution systems were used for more than 100 years to operate motors in commercial and industrial buildings. Brushed DC motors can be varied in speed by changing the operating voltage or the strength of the magnetic field. Depending on the connections of the field to the power supply, the speed and torque characteristics of a brushed motor can be altered to provide steady speed or speed inversely proportional to the mechanical load. Brushed motors continue to be used for electrical propulsion, cranes, paper machines and steel rolling mills. Since the brushes wear down and require replacement, brushless DC motors using power electronic devices have displaced brushed motors from many applications