{
  "meta": {
    "frequency_Hz": 50.0,
    "name": "TVV-320-2",
    "poles": 2
  },
  "geometry": {
    "air_gap_mm": 95.0,
    "outer_air_radius_factor": 2.0,
    "rotor_body_diameter_mm": 1075.0,
    "rotor_inner_diameter_mm": 120.0,
    "stack_length_mm": 6000.0,
    "stator_back_diameter_mm": 2590.0
  },
  "stator": {
    "coil_span_slots": 22,
    "conductor_height_mm": 84.2,
    "conductor_width_mm": 18.6,
    "lower_winding_offset_mm": 8.4,
    "slot_height_mm": 225.0,
    "slot_straight_height_mm": 203.0,
    "slot_wedge_angle_deg": 60.0,
    "slot_wedge_height_mm": 11.6,
    "slot_wedge_width_mm": 43.5,
    "slot_width_mm": 33.0,
    "slots": 54,
    "stack_factor": 0.8366,
    "upper_winding_offset_mm": 110.4
  },
  "rotor": {
    "conductor_height_mm": 14.0,
    "conductor_width_mm": 28.0,
    "slot_bottom_radius_mm": 16.25,
    "slot_divisions": 52,
    "slot_fillet_radius_mm": 16.25,
    "slot_height_mm": 164.5,
    "slot_l1_mm": 12.25,
    "slot_l2_mm": 19.0,
    "slot_l3_mm": 16.0,
    "slot_wedge_width_mm": 46.0,
    "slot_width_mm": 32.5,
    "turns_per_slot": 7,
    "winding_bottom_offset_mm": 16.0,
    "winding_height_mm": 104.0,
    "working_slots": 36
  },
  "nameplate": {
    "source": "RD 34.45.611; Rostik, table 2.4; Power Machines factory reference list",
    "I_field_A": 2920,
    "I_stator_kA": 10.2,
    "P_MW": 300.0,
    "S_MVA": 353.0,
    "U_kV": 20.0,
    "cos_phi": 0.85,
    "rated_field_current_A": 2920.0,
    "rated_field_voltage_V": 445.0,
    "rated_stator_current_A": 10200.0
  },
  "schema": "tvv320-inputs-v1",
  "status": "diagnostic_only_not_a_verified_machine_model",
  "conventions": {
    "stator_slot1_deg": 80.0,
    "parallel_branches": 2,
    "pole_pairs": 1,
    "positive_rotation": "counterclockwise",
    "positive_axial_current": "+z",
    "current_convention": "motor: positive into winding terminals",
    "dq_transform": "amplitude invariant 2/3; q row = -sin; theta from A magnetic axis",
    "phase_flux": "mean of the two series branch flux linkages",
    "slot1_origin": "course coordinate choice, not a factory parameter",
    "field_positive": "+z in belt centred on d+90 degrees; magnetic axis +d"
  },
  "resistance": {
    "stator_phase_ohm": 0.001335,
    "field_ohm": 0.1145,
    "temperature_C": 15,
    "status": "RD calculated DC values, not operating-temperature AC resistances",
    "source": "RD 34.45.611, printed p.14, PDF p.15"
  },
  "provenance": {
    "parameter_sha256": "7c9d6ac76f1dca2bbadce6c25d4b5047bf1796bcff60e7a67c9b6cf289da0770",
    "rd_sha256": "b2cb5b8ad4af0a07ab3d626c8c44d51068f17efb1f7a28a4fb43561d27babe61",
    "sim_usage": "parameters only; no code, model, surrogate or numerical results",
    "geometry_status": "documented research inputs; detailed profiles pending primary reconciliation"
  }
}