Refactoring

src/async_generator.jl

@@ -31,7 +31,7 @@ The inertia of drum and motor are combined into one value (stiff coupling). =#
 Model of a winch with an async generator and a gearbox.
 """
 @with_kw mutable struct AsyncMachine <: AbstractWinchModel @deftype Float64
-    set::Settings = se()
+    set::Union{Settings, Nothing} = nothing
     "nominal motor voltage"
     u_nom = 400.0/sqrt(3)
     "rated synchronous motor speed [rad/s]"
@@ -50,6 +50,12 @@ Model of a winch with an async generator and a gearbox.
     brake::Bool = true;
 end
 
+function AsyncMachine(set::Settings)
+    wm = AsyncMachine()
+    wm.set = set
+    wm
+end
+
 # calculated the motor reactance X [Ohm]
 function calc_reactance(wm::AsyncMachine)
     wm.u_nom^2 / (2 * wm.omega_sn * wm.tau_b) 

test/runtests.jl

@@ -3,17 +3,18 @@ using Test
 
 cd("..")
 KiteUtils.set_data_path("") 
+set = se()
 
  @testset "calc_force" begin
-    wm = deepcopy(AsyncMachine())
+    wm = deepcopy(AsyncMachine(set))
     wm.set.inertia_total=4*0.082
     @test wm.set.inertia_total ≈ 0.328
     @test (-calc_force(wm, 1.0, 0.0))  ≈ -12620.5127746
     @test (-calc_force(wm, 0.15, 9.0)) ≈   3698.78395182
 end
 
 @testset "WinchModels.jl" begin
-    wm = deepcopy(AsyncMachine())
+    wm = deepcopy(AsyncMachine(set))
     @test calc_reactance(wm)  ≈ 0.4676729273591048
     @test calc_inductance(wm) ≈ 0.002977298325578337
     @test calc_resistance(wm) ≈ 0.07268793534211404