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Delta-Delta Transformers

Dd00  Dd02  Dd04  Dd06  Dd08  Dd10

Three-phase transformers with delta primary and delta secondary windings  Description The Delta-Delta (or Dd) components are three-phase transformers with delta primary and delta secondary windings. The base name of each component is Ddij, where ij are two digits that specify the phase shift between the primary and secondary windings. The numbers range from 0 to 12 and correspond to the hours on the face of a clock. For example, 02 corresponds to a phase shift of 60 degrees. Connections

 Name Description Modelica ID $\mathrm{plug1}$ Primary plug plug1 $\mathrm{plug2}$ Secondary plug plug2 $\mathrm{thermalPort}$ Optional thermal port thermalPort Parameters General Parameters

 Name Default Units Description Modelica ID $n$ $1$ $1$ Ratio primary voltage (line-to-line) / secondary voltage (line-to-line) n ${T}_{1,\mathrm{oper}}$ $293.15$ $K$ Operational temperature of primary resistance T1Operational ${T}_{2,\mathrm{oper}}$ $293.15$ $K$ Operational temperature of secondary resistance T2Operational Use Thermal Port $\mathrm{false}$ True (checked) means thermal port is enabled useThermalPort Nominal Resistances And Inductances Parameters

 Name Default Units Description Modelica ID ${R}_{1}$ $\mathrm{\Omega }$ Primary resistance per phase at TRef R1 ${T}_{1,\mathrm{ref}}$ $293.15$ $K$ Reference temperature of primary resistance T1Ref ${\mathrm{\alpha }}_{1}$ $0$ $\frac{1}{K}$ Temperature coefficient of ${R}_{1}$ at ${T}_{1},\mathrm{ref}$ alpha20_1 ${L}_{1\mathrm{\sigma }}$ $H$ Primary stray inductance per phase L1sigma ${R}_{2}$ $\mathrm{\Omega }$ Secondary resistance per phase at TRef R2 ${T}_{2,\mathrm{ref}}$ $293.15$ $K$ Reference temperature of secondary resistance T2Ref ${\mathrm{\alpha }}_{2}$ $0$ $\frac{1}{K}$ Temperature coefficient of ${R}_{2}$ at ${T}_{2},\mathrm{ref}$ alpha20_2 ${L}_{2\mathrm{\sigma }}$ $H$ Secondary stray inductance per phase L2sigma Modelica Standard Library The component described in this topic is from the Modelica Standard Library. To view the original documentation, which includes author and copyright information, click here.