modelYDportTrafo_p_n

AC two port with Y or Delta topology for transformers

Extends from Port_p_n (AC two port, 3-phase).

Information

Defines Y- and Delta-topology transform of voltage and current variables and contains additionally voltage and current scaling.

Below

  term, v, i, w

denote either the 'primary' or 'secondary' side

  term_p, v1, i1, w1
  term_n, v2, i2, w2

Definitions

  v:     scaled voltage across conductor
  i:     scaled current through conductor
  v_n:   voltage neutral point if Y-topology
  i_n:   current neutral to ground if Y-topology
  w:     voltage ratio to nominal (any value, but common for primary and secondary)

Relations Y-topology, (v, i: terminal to neutral point)

  v = (term.v - {v_n, v_n, v_n})/w
  term.i = i/w
  i_n = sum(term.i)

Relations Delta-topology, (v, i: phase terminal to phase terminal)

  v_cond = v_term[{1,2,3}] - v_term[{2,3,1}]
  i_term = i_cond[{1,2,3}] - i_cond[{3,1,2}]

Connectors

Type	Name	Default	Description
Base.Interfaces.ACabc_p	term_p (from Port_p_n)		positive terminal
Base.Interfaces.ACabc_n	term_n (from Port_p_n)		negative terminal

Components

Type	Name	Default	Description
Topology.Y	top_p		p: Y or Delta topology
Topology.Y	top_n		n: Y or Delta topology
SI.Voltage	v1	top_p.v_cond/w1	voltage conductor
SI.Current	i1	top_p.i_cond*w1	current conductor
SI.Voltage	v_n1	top_p.v_n	voltage neutral
SI.Current	i_n1	top_p.i_n	current neutral to ground
SI.Voltage	v2	top_n.v_cond/w2	voltage conductor
SI.Current	i2	top_n.i_cond*w2	current conductor
SI.Voltage	v_n2	top_n.v_n	voltage neutral
SI.Current	i_n2	top_n.i_n	current neutral to ground