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Power Fundamentals: Buck Regulator Architectures
Power Fundamentals: Buck Regulator Architectures

... share the same switch node. This is precisely the case in a multiphase configuration. Not only does each group of FETs not need to switch simultaneously with the rest of the groups, but all the groups are intentionally switched at different times to gain other benefits which we will discuss later in ...
Principles of Electricity
Principles of Electricity

...  There is no voltage drop if two or more loads are connected in parallel.  Example – A vanity light that has three lights. If wired in parallel, the voltage at all three loads is 120V, same as the source.  If wired in series each light bulb would produce only 40 volts each ...
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... Controller Area Network (CAN) is a multicast shared, differential serial bus standard. CAN was specifically designed to be robust in electromagnetically noisy environments and can utilize a differential balanced line like RS-485. Introduced by Bosch in 1986 for in-vehicle networks in cars, it is use ...
52911
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... power supplies over conventional rackand-stack power sources include; significantly faster execution speeds for great ATE throughput, size and weight reductions, and greater modularity thereby reducing spares and maintenance costs and increasing system up-time. POWER LEVELS The 52911 provides two in ...
Series Compensation on Medium Voltage Radial Systems
Series Compensation on Medium Voltage Radial Systems

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CLIF MOCK CD30A Sampler Drive IOM
CLIF MOCK CD30A Sampler Drive IOM

19/23-5SS
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... technician certified by Eaton and Carrier as a commissioner for the LCX9000 VFD. Proper commissioning forms should be completed for submission to Eaton. The entire VFD parameter set should be collected using the Eaton XDrive utility program (available from Eaton) and submitted to Eaton as part of st ...
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... PolarPTM P-Channel MOSFETs Cost effective solution to ‘high side’ switching applications from 100 to 600V • *Currently no P-Channel MOSFET in the market above 200V to compete • Reduction in component count, promoting cost savings and circuit simplification for designers • Low Rdson and Gate Charge c ...
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... The kit includes a set of components allowing a full course on general electronics to be developed. All components are mounted on a printed circuit board fixed to metal tacks anchored on transparent plastic material modules, allowing consequently the vision of the components and the related symbol r ...
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AVERAGE CURRENT MODE CONTROL OF A VOLTAGE SOURCE

... The contribution of a renewable power source to the total power generation becomes more and more important. A full-bridge inverter is practically always used for interfacing this Green Power Source to the utility-grid. The control of the energy flowing from the DC source, which is corresponding to a ...
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... width modulation (PWM) pattern. This switching control allows simultaneous adjustment of the amplitude and phase angle of the converter AC output voltage with constant dc, PWM pattern and the fundamental frequency voltage in a Voltage Source Converter. With these two independent control ...
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... Initial the machine is under-excited, so armature reaction is helping to support the flux linkages in the stator winding. With no real power, all the flux is in the q-axis (and the induced voltage leads by 90º – Kundar notation). Most of the flux in the “stator” field is links the rotor field. The s ...
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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.
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