first commit

src/domain/calculations/power-calculation.ts

@@ -0,0 +1,29 @@
+export interface PowerInput {
+  quantity: number;
+  installedPowerPerUnitKw: number;
+  demandFactor: number;
+}
+
+export interface CurrentInput {
+  demandPowerKw: number;
+  voltageV: number;
+  phaseCount: 1 | 3;
+  powerFactor: number;
+}
+
+export function calculateInstalledPowerKw(input: PowerInput): number {
+  return input.quantity * input.installedPowerPerUnitKw;
+}
+
+export function calculateDemandPowerKw(input: PowerInput): number {
+  return calculateInstalledPowerKw(input) * input.demandFactor;
+}
+
+export function calculateCurrentA(input: CurrentInput): number {
+  const powerW = input.demandPowerKw * 1000;
+  if (input.phaseCount === 1) {
+    return powerW / (input.voltageV * input.powerFactor);
+  }
+  return powerW / (Math.sqrt(3) * input.voltageV * input.powerFactor);
+}
+