Aalborg Universitet "Active flux" orientation vector sensorless control of IPMSM
... or even zero speed operation [1]-[8]. The methods for sensorless position estimation can be divided into two main categories: approaches using backelectromotive-force (EMF) estimation with fundamental excitation and spatial saliency image tracking methods using excitation in addition to the fundamen ...
... or even zero speed operation [1]-[8]. The methods for sensorless position estimation can be divided into two main categories: approaches using backelectromotive-force (EMF) estimation with fundamental excitation and spatial saliency image tracking methods using excitation in addition to the fundamen ...
Digital Motion Control System Design
... switch or inline with motor phase If sampled in leg of switch a time when all Switches are switched to ground must be allowed Leg sampling will not allow for 100% duty cycle operation Depending on worst case slew rate as much as 10% duty cycle might be lost Sampling in line with phase requires eithe ...
... switch or inline with motor phase If sampled in leg of switch a time when all Switches are switched to ground must be allowed Leg sampling will not allow for 100% duty cycle operation Depending on worst case slew rate as much as 10% duty cycle might be lost Sampling in line with phase requires eithe ...
electrical drive
... 1. Cost is too low. 2) The system is more simple and clean 3) The control is very easy and smooth 4) Flexible in layout 5) Facility for remote control. 6) Transmission of power from one part to other can be done with the help of cables instead of long shafts etc. 7) Maintenance cost is quite low. 8) ...
... 1. Cost is too low. 2) The system is more simple and clean 3) The control is very easy and smooth 4) Flexible in layout 5) Facility for remote control. 6) Transmission of power from one part to other can be done with the help of cables instead of long shafts etc. 7) Maintenance cost is quite low. 8) ...
VFDs: Do`s and Don`ts - PNWS-AWWA
... Sizing – Due to typically shorter cable length & more rugged motor design the sizing is typically smaller than with Submersibles No 30 hz minimum speed requirement like subs More of a hz range can be utilized, but since they are typically 1800 rpm rather than 3600 rpm the beneficial pumping rate ran ...
... Sizing – Due to typically shorter cable length & more rugged motor design the sizing is typically smaller than with Submersibles No 30 hz minimum speed requirement like subs More of a hz range can be utilized, but since they are typically 1800 rpm rather than 3600 rpm the beneficial pumping rate ran ...
Sustainability Aspects of Energy Conversion in Modern High
... High-Speed Trains with Traction Induction Motors Marc A. Rosen 1,†,*, Doru A. Nicola 2,†, Cornelia A. Bulucea 2,† and Daniel C. Cismaru 2,† ...
... High-Speed Trains with Traction Induction Motors Marc A. Rosen 1,†,*, Doru A. Nicola 2,†, Cornelia A. Bulucea 2,† and Daniel C. Cismaru 2,† ...
Fundamentals of Electric Power Engineering. From Electromagnetics to Power Systems Brochure
... engineers amass power system information quickly by imparting tools and trade tricks for remembering basic concepts and grasping new developments. Created to provide more in-depth knowledge of fundamentals—rather than a broad range of applications only—this comprehensive and up-to-date book: - Cover ...
... engineers amass power system information quickly by imparting tools and trade tricks for remembering basic concepts and grasping new developments. Created to provide more in-depth knowledge of fundamentals—rather than a broad range of applications only—this comprehensive and up-to-date book: - Cover ...
Impact of Pole Pair Number on the Efficiency of an Induction
... six-pole induction generators the standard IEC laminations with axis-height 355 mm and outer diameter Do 580 mm were used. All three laminations are designed for different pole numbers, i.e. two, four and six and for the longest possible package length lFe 550 mm for which a rotor squirrel-cage ...
... six-pole induction generators the standard IEC laminations with axis-height 355 mm and outer diameter Do 580 mm were used. All three laminations are designed for different pole numbers, i.e. two, four and six and for the longest possible package length lFe 550 mm for which a rotor squirrel-cage ...
T4903127132
... inverter switching modes. The DTC controller consists of two hysteresis comparator (flux and torque) to select the switching voltage vector in order to maintain flux and torque between upper and lower limit. DTC explained in this paper is closed loop drive. Here flux and torque measured from the ind ...
... inverter switching modes. The DTC controller consists of two hysteresis comparator (flux and torque) to select the switching voltage vector in order to maintain flux and torque between upper and lower limit. DTC explained in this paper is closed loop drive. Here flux and torque measured from the ind ...
Electromagnetic Induction
... Electromagnetic induction is the process of generating electric current with a magnetic field. It occurs whenever a magnetic field and an electric conductor, such as a coil of wire, move relative to one another. As long as the conductor is part of a closed circuit, current will flow through it whene ...
... Electromagnetic induction is the process of generating electric current with a magnetic field. It occurs whenever a magnetic field and an electric conductor, such as a coil of wire, move relative to one another. As long as the conductor is part of a closed circuit, current will flow through it whene ...
doc - Purdue College of Engineering
... and off based on the control algorithm. The frequency of this signal is not a discrete number, but will vary depending on the load torque and throttle input. Based on the throttle input, the team will be able to calculate the necessary current. This requested current will be given a certain hysteres ...
... and off based on the control algorithm. The frequency of this signal is not a discrete number, but will vary depending on the load torque and throttle input. Based on the throttle input, the team will be able to calculate the necessary current. This requested current will be given a certain hysteres ...
Physics of Hybrid Vehicles
... RC [resistor-capacitor] filters are used to decrease the AC component and allow steady DC meter readings. [especially with a digital meter] A diode is used to charge a capacitor for the peak reading. Peak voltage should not exceed maximum soft charge voltage. For both configurations, the generator m ...
... RC [resistor-capacitor] filters are used to decrease the AC component and allow steady DC meter readings. [especially with a digital meter] A diode is used to charge a capacitor for the peak reading. Peak voltage should not exceed maximum soft charge voltage. For both configurations, the generator m ...
IOSR Journal of Computer Engineering (IOSR-JCE)
... vertical deflection to slow motor-vehicle traffic in order to improve safety conditions. Variations include the speed hump (or speed ramp), speed cushion, and speed table. The use of vertical deflection devices is widespread around the world, and they are most commonly found where vehicle speeds are ...
... vertical deflection to slow motor-vehicle traffic in order to improve safety conditions. Variations include the speed hump (or speed ramp), speed cushion, and speed table. The use of vertical deflection devices is widespread around the world, and they are most commonly found where vehicle speeds are ...
Sebuah Kajian Pustaka:
... Depending on the sequence and value of the controlled frequency 2, a DEBG can operate in different modes. In particular, in the doubly-excited mode with 2=0, the DEBG is operated as a synchronous machine at natural synchronous speed. On the other hand, with 2 0 or 2<0 (negative sequence), a DEB ...
... Depending on the sequence and value of the controlled frequency 2, a DEBG can operate in different modes. In particular, in the doubly-excited mode with 2=0, the DEBG is operated as a synchronous machine at natural synchronous speed. On the other hand, with 2 0 or 2<0 (negative sequence), a DEB ...
Initial Design of 12s-10p and 12s-14p with Outer
... excitation is the best candidate with a decent performance with a low cost of manufactured. Hence, FEFSM motor has a huge advantages in the construction (simple), magnet-less, and variable flux control capabilities which suitable for various performances. Since the permanent magnet is being used wid ...
... excitation is the best candidate with a decent performance with a low cost of manufactured. Hence, FEFSM motor has a huge advantages in the construction (simple), magnet-less, and variable flux control capabilities which suitable for various performances. Since the permanent magnet is being used wid ...
Chapter 36 Summary – Magnetism
... repel, permanent magnet, opposite, electromagnet, magnetic field, alternating current, direct current, ammeter 1. ____________________ What the properties of magnets and their interactions are referred to as. 2. ____________________ The regions on a magnet where the magnetic force is strongest. 3. _ ...
... repel, permanent magnet, opposite, electromagnet, magnetic field, alternating current, direct current, ammeter 1. ____________________ What the properties of magnets and their interactions are referred to as. 2. ____________________ The regions on a magnet where the magnetic force is strongest. 3. _ ...
maxon DC motor and maxon EC motor Key information
... of commutation steps for a motor revolution (6 x number of pole pairs). Due to the wound stator teeth they have a higher terminal inductance than motors with an ironless winding. As a result at higher speed, the current cannot develop fully during the correspondingly short commutation intervals. The ...
... of commutation steps for a motor revolution (6 x number of pole pairs). Due to the wound stator teeth they have a higher terminal inductance than motors with an ironless winding. As a result at higher speed, the current cannot develop fully during the correspondingly short commutation intervals. The ...
link
... synchronous motors with excitation and damper windings (used in the high-power applications) and of slip ring (wound rotor) induction machines (used as generators in wind electricity generation) is thus not covered and the reader is referred to the literature referenced shortly for more information ...
... synchronous motors with excitation and damper windings (used in the high-power applications) and of slip ring (wound rotor) induction machines (used as generators in wind electricity generation) is thus not covered and the reader is referred to the literature referenced shortly for more information ...
Basics of AC Motors
... Since work is the product of force times the distance applied, work can be expressed in any compound unit of force times distance. For example, in physics, work is commonly expressed in joules. 1 joule is equal to 1 newton-meter, a force of 1 newton for a distance of 1 meter. In the English system ...
... Since work is the product of force times the distance applied, work can be expressed in any compound unit of force times distance. For example, in physics, work is commonly expressed in joules. 1 joule is equal to 1 newton-meter, a force of 1 newton for a distance of 1 meter. In the English system ...
2014
... 4. a) Explain in detail how a DC shunt generator builds up its voltage. Discuss the conditions to be satisfied for the buildup of voltage? What limits the voltage to which it can build up? b) Sketch the complete load characteristics of a DC series generator and indicate there in the region of operat ...
... 4. a) Explain in detail how a DC shunt generator builds up its voltage. Discuss the conditions to be satisfied for the buildup of voltage? What limits the voltage to which it can build up? b) Sketch the complete load characteristics of a DC series generator and indicate there in the region of operat ...
Induction motor
An induction or asynchronous motor is an AC electric motor in which the electric current in the rotor needed to produce torque is obtained by electromagnetic induction from the magnetic field of the stator winding. An induction motor therefore does not require mechanical commutation, separate-excitation or self-excitation for all or part of the energy transferred from stator to rotor, as in universal, DC and large synchronous motors. An induction motor's rotor can be either wound type or squirrel-cage type.Three-phase squirrel-cage induction motors are widely used in industrial drives because they are rugged, reliable and economical. Single-phase induction motors are used extensively for smaller loads, such as household appliances like fans. Although traditionally used in fixed-speed service, induction motors are increasingly being used with variable-frequency drives (VFDs) in variable-speed service. VFDs offer especially important energy savings opportunities for existing and prospective induction motors in variable-torque centrifugal fan, pump and compressor load applications. Squirrel cage induction motors are very widely used in both fixed-speed and variable-frequency drive (VFD) applications. Variable voltage and variable frequency drives are also used in variable-speed service.