| 摘要 |
A solid state distribution transformer (T) provides transformation between voltage levels through the use of power electronic converters rather than through the use of magnetics, al-though a high frequency isolation transformer (22) is also used. Advantages of this device over a traditional distribution transformer include no mineral oil, less weight, smaller, mitigation of all power quality issues at the load (can compen-sate for non-sinusoidal loads, DC offset loads, input power factor at input of transformer re-gardless of unity power factor at output of trans-former. The solid state distribution transformer (T) also features a DC bus capable of supporting motor drives and may also be readily interfaced to energy storage devices (such as batteries) for operation as an uninterruptable power supply. In addition, the input frequency (12) is decoupled from the output frequency (30), and changing the number of output phases could be readily achieved. Further, phase shifting of the out-put voltage relative to the input voltage may be achived with the solid state distribution trans-former (T).
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