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2. Variable-frequency drive - Wikipedia

   en.wikipedia.org/wiki/Variable-frequency_drive

   Small variable-frequency drive Chassis of above VFD (cover removed). A variable-frequency drive (VFD, or adjustable-frequency drive, adjustable-speed drive, variable-speed drive, AC drive, micro drive, inverter drive, variable voltage variable frequency drive, or drive) is a type of AC motor drive (system incorporating a motor) that controls speed and torque by varying the frequency of the ...

3. Recloser - Wikipedia

   en.wikipedia.org/wiki/Recloser

   On a 3-phase circuit, a recloser is more beneficial than three separate fuse cutouts. For example, on a wye to delta conversion, when cutouts are used on the wye side and only 1 out of 3 of the cutout fuses open, some customers on the delta side have a low voltage condition, due to voltage transfer through the transformer windings. Low voltage ...

4. Hyundai Electric Global Modular Platform - Wikipedia

   en.wikipedia.org/wiki/Hyundai_Electric_Global...

   The PE System serves the same function for an electric vehicle as an engine and a transmission for a vehicle powered by a conventional internal combustion engine. [2] The first generation PE system used a discrete traction motor and power inverter electronic module, connected with an orange three-phase cable.

5. Electric generator - Wikipedia

   en.wikipedia.org/wiki/Electric_generator

   Most power stations contain one or more generators, or spinning machines converting mechanical power into three-phase electrical power. The relative motion between a magnetic field and a conductor creates an electric current. The energy source harnessed to turn the generator varies widely.

6. Power factor - Wikipedia

   en.wikipedia.org/wiki/Power_factor

   The power factor in a single-phase circuit (or balanced three-phase circuit) can be measured with the wattmeter-ammeter-voltmeter method, where the power in watts is divided by the product of measured voltage and current. The power factor of a balanced polyphase circuit is the same as that of any phase. The power factor of an unbalanced ...

7. Talk:Three-phase electric power - Wikipedia

   en.wikipedia.org/wiki/Talk:Three-phase_electric...

   It's fed from one of the three phases of the distribution, which is converted to a split-phase. The result is two opposing phases (180°, or + vs – of same "phase"), not two of the three three-phase (120°) phases. File:Polemount-singlephase-closeup.jpg is pretty standard last hop before residence. Notice one primary-side bushing, and two ...

8. Pulse-width modulation - Wikipedia

   en.wikipedia.org/wiki/Pulse-width_modulation

   Adjusting the brightness of light emitted by a light source is then merely a matter of setting at what voltage (or phase) in the AC half-cycle the dimmer begins to provide electric current to the light source (e.g. by using an electronic switch such as a triac). In this case the PWM duty cycle is the ratio of the conduction time to the duration ...

9. Switched-mode power supply - Wikipedia

   en.wikipedia.org/wiki/Switched-mode_power_supply

   Size and weight: 0.12 W/cm 3, 88 W/kg [28] Smaller than linear power supply. Compared to linear, a SMPS that is 20 kHz is 1/4, 100–200 kHz is 1/8, and 200 kHz–1 MHz types can be even smaller. [28]: 5–8 A transformer's power handling capacity of given size and weight increases with frequency provided that hysteresis losses can be kept down ...