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2. Switched-mode power supply - Wikipedia

   en.wikipedia.org/wiki/Switched-mode_power_supply

   The inverter stage converts DC, whether directly from the input or from the rectifier stage described above, to AC by running it through a power oscillator, whose output transformer is very small with few windings, at a frequency of tens or hundreds of kilohertz. The frequency is usually chosen to be above 20 kHz, to make it inaudible to humans.

3. Synchronverter - Wikipedia

   en.wikipedia.org/wiki/Synchronverter

   The synchronization unit often needs to provide frequency and amplitude. [15] But when inverter is controlled as a current source, the synchronization unit is often required to provide the phase of the grid only, so it is much easier to control it as a current source. [16] Figure 5. Compact control structure for a grid-connected inverter.

4. Solar inverter - Wikipedia

   en.wikipedia.org/wiki/Solar_inverter

   Internal view of a solar inverter. Note the many large capacitors (blue cylinders), used to buffer the double line frequency ripple arising due to single-phase ac system.. A solar inverter or photovoltaic (PV) inverter is a type of power inverter which converts the variable direct current (DC) output of a photovoltaic solar panel into a utility frequency alternating current (AC) that can be ...

5. Power inverter - Wikipedia

   en.wikipedia.org/wiki/Power_inverter

   A power inverter, inverter, or invertor is a power electronic device or circuitry that changes direct current (DC) to alternating current (AC). [1] The resulting AC frequency obtained depends on the particular device employed. Inverters do the opposite of rectifiers which were originally large electromechanical devices converting AC to DC. [2]

6. Frequency changer - Wikipedia

   en.wikipedia.org/wiki/Frequency_changer

   A variable-frequency drive (VFD) is a type of frequency changer used for speed control of AC motors such as used for pumps and fans. The speed of a synchronous or induction AC motor is dependent on the frequency of the AC power supply, so changing frequency allows the motor speed to be changed. This allows fan or pump output to be varied to ...

7. List of HVDC projects - Wikipedia

   en.wikipedia.org/wiki/List_of_HVDC_projects

   ; China - 30°36′26″N 122°07′40″E  /  30.60722°N 122.12778°E  / 30.60722; 122.12778  ( HVDC Zhejiang Zhoushan Islands - Yangshan Static Inverter Plant ) ; China 30°41′45″N 122°25′50″E  /  30.69583°N 122.43056°E  / 30.69583; 122.43056  ( HVDC Zhejiang Zhoushan Islands - Sijiao Static Invert