Comparison Study of Singly-Fed Electric Machine with Doubly
... iq and id components are shown in Fig. 2 a) and b). Due to the strong magnetic field given by the buried rare-earth magnets, IPM motors can be designed more compact than any other types of electric motors with a decent torque capability. For a relatively small speed-torque region, an IPM design can ...
... iq and id components are shown in Fig. 2 a) and b). Due to the strong magnetic field given by the buried rare-earth magnets, IPM motors can be designed more compact than any other types of electric motors with a decent torque capability. For a relatively small speed-torque region, an IPM design can ...
AG21195206
... converter operation becomes insensitive to the diode‟s junction capacitance. The major limitations associated with ZCS when power MOSFETs are used are the capacitive turn-on losses. Thus, the switching loss is proportional to the switching frequency. During turn-on, considerable rate of change of vo ...
... converter operation becomes insensitive to the diode‟s junction capacitance. The major limitations associated with ZCS when power MOSFETs are used are the capacitive turn-on losses. Thus, the switching loss is proportional to the switching frequency. During turn-on, considerable rate of change of vo ...
November 2009
... voltage source applied), shaft torque, rotor speed at a certain mechanical load. Copper loss is calculated off-line from the FEA solution of current and the calculated resistance by the designer. Core loss is mostly approximated from the flux density solution in the core and the material datasheet a ...
... voltage source applied), shaft torque, rotor speed at a certain mechanical load. Copper loss is calculated off-line from the FEA solution of current and the calculated resistance by the designer. Core loss is mostly approximated from the flux density solution in the core and the material datasheet a ...
capacitors for rfi suppression of the ac line
... listed with any Nationally Recognized Testing Lab (NRTL) of which UL is the most widely known. NRTLs typically test end products to UL standards (plus those of other countries) and very few test primary components such as capacitors. Therefore it is sufficient to discuss only UL. UL was established ...
... listed with any Nationally Recognized Testing Lab (NRTL) of which UL is the most widely known. NRTLs typically test end products to UL standards (plus those of other countries) and very few test primary components such as capacitors. Therefore it is sufficient to discuss only UL. UL was established ...
mfiis template
... inputvoltages and powers and compared with the lossapproximations used in the design. At low current operationthe converter operates at approximately 98% efficiency. Asthe converter power is increased the efficiency drops as low as 90 %. The expected efficiency at minimum input voltage, 50 V, is wit ...
... inputvoltages and powers and compared with the lossapproximations used in the design. At low current operationthe converter operates at approximately 98% efficiency. Asthe converter power is increased the efficiency drops as low as 90 %. The expected efficiency at minimum input voltage, 50 V, is wit ...
Michael Faraday
... magnetic field. Michael Faraday is generally credited with the discovery of induction in 1831 though it may have been anticipated by the work of Francesco Zantedeschi in 1829 ...
... magnetic field. Michael Faraday is generally credited with the discovery of induction in 1831 though it may have been anticipated by the work of Francesco Zantedeschi in 1829 ...
012235240AB
... Linear motors have been around for nearly a century, and yet are still in their early stages of development. Because of their large air gaps, low efficiencies and low power factor they have not been considered viable design options for many high-speed linear motion application [1]. Recently linear m ...
... Linear motors have been around for nearly a century, and yet are still in their early stages of development. Because of their large air gaps, low efficiencies and low power factor they have not been considered viable design options for many high-speed linear motion application [1]. Recently linear m ...
Lect11
... time constant is entirely determined by C, R1, and R2. • I personally find it easier to think about the circuit as if C was discharging than charging; I imagine that the capacitor is charged, and that the battery is replaced by a wire (which also has no resistance or capacitance). Since the batter ...
... time constant is entirely determined by C, R1, and R2. • I personally find it easier to think about the circuit as if C was discharging than charging; I imagine that the capacitor is charged, and that the battery is replaced by a wire (which also has no resistance or capacitance). Since the batter ...
Notes
... A transformer is a magnetically coupled coil used in transmission of an electric power. This coil may be electrically link, but not electrically linked as in two winding transformer. It consists of primary winding and secondary winding which the number of turns varies depending on the type of transf ...
... A transformer is a magnetically coupled coil used in transmission of an electric power. This coil may be electrically link, but not electrically linked as in two winding transformer. It consists of primary winding and secondary winding which the number of turns varies depending on the type of transf ...
Science 285
... been neglected. Although this flux will be used for coupling of qubits, it is much smaller than the flux quantum and only slightly changes the picture here. UJ is 2 periodic in ␥1 and ␥2 (Fig. 2A) for the parameter values ␣ ⫽ 0.75 and f1 ⫽ f2 ⫽ 0.330. Each unit cell has two minima Lij and Rij with ...
... been neglected. Although this flux will be used for coupling of qubits, it is much smaller than the flux quantum and only slightly changes the picture here. UJ is 2 periodic in ␥1 and ␥2 (Fig. 2A) for the parameter values ␣ ⫽ 0.75 and f1 ⫽ f2 ⫽ 0.330. Each unit cell has two minima Lij and Rij with ...
Coilgun
A coilgun (or Gauss rifle, in reference to Carl Friedrich Gauss, who formulated mathematical descriptions of the magnetic effect used by magnetic accelerators) is a type of projectile accelerator consisting of one or more coils used as electromagnets in the configuration of a linear motor that accelerate a ferromagnetic or conducting projectile to high velocity. In almost all coilgun configurations, the coils and the gun barrel are arranged on a common axis.Coilguns generally consist of one or more coils arranged along a barrel, so the path of the accelerating projectile lies along the central axis of the coils. The coils are switched on and off in a precisely timed sequence, causing the projectile to be accelerated quickly along the barrel via magnetic forces. Coilguns are distinct from railguns, as the direction of acceleration in a railgun is at right angles to the central axis of the current loop formed by the conducting rails. In addition, railguns usually require the use of sliding contacts to pass a large current through the projectile or sabot but coilguns do not necessarily require sliding contacts. Whilst some simple coilgun concepts can use ferromagnetic projectiles or even permanent magnet projectiles, most designs for high velocities actually incorporate a coupled coil as part of the projectile.