An Improved AC/AC Converter System Using Phase-shifting Transformer
A phase-shifting transformer and AC frequency conversion technology, applied in the field of power grid, can solve problems such as high cost, and achieve the effects of stable and reliable performance, simple circuit and reasonable design
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[0028] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.
[0029] A three-phase 12-pulse alternating frequency conversion circuit using a phase-shifting transformer such as figure 1 and Figure 4 As shown, the input current harmonic suppression is realized based on the following principles:
[0030] An AC inverter system improved by using a phase-shifting transformer, comprising: a power grid, a three-phase AC inverter connected to the grid, the power grid and a phase of the output of the three-phase AC inverter are connected by an ordinary three-winding transformer, The other two-phase power grid is connected with the three-phase AC-AC converter using a phase-shifting transformer.
[0031] Preferably, an ordinary three-winding transformer is used to connect the power grid to the output phase A of the...
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