Use Math.Abs for the signed currents

csharp/Lib/Devices/EmuMeter/EmuMeterRegisters.cs

@@ -35,20 +35,20 @@ public class EmuMeterRegisters : IAc3Meter
     {
         L1 = new ()
         {
-            Current = _CurrentL1,
-            Voltage = _VoltageL1N,
+            Current = Abs(_CurrentL1),
+            Voltage = Abs(_VoltageL1N),
             Phi     = Atan2(_ReactivePowerL1, _ActivePowerL1)
         },
         L2 = new ()
         {
-            Current = _CurrentL2,
-            Voltage = _VoltageL2N,
+            Current = Abs(_CurrentL2),
+            Voltage = Abs(_VoltageL2N),
             Phi     = Atan2(_ReactivePowerL2, _ActivePowerL2)
         },
         L3 = new ()
         {
-            Current = _CurrentL3,
-            Voltage = _VoltageL3N,
+            Current = Abs(_CurrentL3),
+            Voltage = Abs(_VoltageL3N),
             Phi     = Atan2(_ReactivePowerL3, _ActivePowerL3)
         },
         Frequency = _Frequency