The Simplest Phase - shifting Method of Transformer

three phase pad mounted transformer The simplest phase-shifting method The simplest phase-shifting method is to use the secondary side of the amount of two-angle connection of the winding, can make the rectifier furnace pulse wave number doubled. For high-power rectifier equipment, the need for more pulse wave number, pulse wave number 18,24,36 applications such as increasing, which must be set in the primary side of the rectifier transformer phase shift phase shift. Phase-shifted winding and the main winding connection in three ways, namely, zigzag, hexagonal and Yanbian triangle. For the electrochemical industry, rectifier transformer voltage range is much larger than the electric furnace transformer, for chemical salt electrolysis, rectifier transformer voltage range is usually 56% - 105%, for aluminum electrolysis, the voltage range is usually 5% - 105%. Commonly used voltage regulation methods such as electric furnace transformer has variable magnetic flux regulator, series single phase step down transformer voltage regulator and auto-regulator voltage regulator. In addition, due to the characteristics of the rectifier element, the rectifier can be directly on the valve side of the rectifier silicon rectifier conduction phase angle, can be adjusted smoothly the average of the rectified voltage, this regulator called phase-controlled voltage regulator. To achieve phase-controlled voltage regulator, the use of crystal valve, the second is the use of self-saturable reactor, self-saturation reactor is basically composed of a core and two windings, one is the working winding, which is connected in series rectifier transformer two The secondary winding and the rectifier between the load current, the other is the DC control winding is provided by another DC power supply DC current, the main principle is the use of non-linear changes in ferromagnetic materials, the work winding reactance value is very large The change. Adjust the DC control current, you can adjust the phase angle α, which adjusts the average rectified voltage.