Improved statistics display

- fixed bug in solar recharge percentage computation
- added recharge at the end of the year to have the same battery level
at the start and end of the year
- added battery and charger efficiency simulation
- using kWh price (without counting subscription)

simulator/src/simulator-ui.ts

@@ -21,11 +21,6 @@ function runSimulation(parameters: SimulationParameters): Simulator.SimulationRe
 	//console.log(solarIrradiance);
 	//console.log(simulationResult);
 	
-	//let averageKwhCost = 0.192; // in €/kWh TODO: to verify, this price seems too high
-	//console.log('Grid recharge cost: ' + (Math.round(simulationResult.gridChargeCount*(vehicle.batteryCapacity/1000)*averageKwhCost*100)/100) + '€');
-	
-	//console.log('Solar energy ratio: ' + Math.round(100*(simulationResult.cumulatedMotorConsumption-(simulationResult.gridChargeCount+1)*vehicle.batteryCapacity)/simulationResult.cumulatedMotorConsumption) + '%');
-	
 	return simulationResult;
 }
 
@@ -76,12 +71,16 @@ document.addEventListener('DOMContentLoaded', function() {
 		
 		let resultsContainer = container.querySelector('.simulation-results');
 		
-		let averageKwhCost = 0.192; // in €/kWh TODO: to verify, this price seems too high
+		let averageKwhCost = 0.1558; // in €/kWh
+		let totalConsumedGridPower = simulationResult.cumulatedGridRechargeEnergy / simulationResult.vehicle.batteryEfficiency / simulationResult.vehicle.gridTransformerEfficiency;
+		
+		let solarRechargeRatio =  Math.round(100*(simulationResult.cumulatedSolarRechargeEnergy/(simulationResult.cumulatedSolarRechargeEnergy + simulationResult.cumulatedGridRechargeEnergy)));
 		resultsContainer.querySelector('.result-info').innerHTML = `
-			<p>Il faudra recharger le vhélio sur secteur environ ${simulationResult.gridChargeCount} fois sur l'année</p>
+			<p>Il faudra recharger le vhélio sur secteur environ ${simulationResult.gridChargeCount} fois sur l'année.</p>
-			<p>Cela coûtera ${Math.round(simulationResult.gridChargeCount*(parameters.batteryCapacity/1000)*averageKwhCost*100)/100}€ sur l'année</p>
+			<p>Cela coûtera ${Math.round(totalConsumedGridPower/1000*averageKwhCost*100)/100}€ sur l'année.</p>
-			<p>La couverture solaire du vhélio est de ${Math.round(100*(simulationResult.cumulatedMotorConsumption-(simulationResult.gridChargeCount+1)*parameters.batteryCapacity)/simulationResult.cumulatedMotorConsumption)}%</p>
+			<p>Le vhélio sera rechargé à ${solarRechargeRatio}% par le soleil, ${100-solarRechargeRatio}% sur secteur.</p>
 		`;
+		//<p>${Math.round(100*(simulationResult.cumulatedSolarRechargeEnergy/simulationResult.vehicle.batteryEfficiency) / simulationResult.totalProducedSolarEnergy)}% de l'énergie produite par le panneau photovoltaïque sera utilisée pour recharger le vhélio.</p>
 		
 		let batteryChargeGraph = new SvgDrawing.SvgElement(resultsContainer.querySelector('.battery-charge-graph svg'));
 		
@@ -100,7 +99,7 @@ document.addEventListener('DOMContentLoaded', function() {
 		
 		batteryChargeGraph.viewport.setData({ x: 0, y: 0, width: 365*24, height: parameters.batteryCapacity });
 		batteryChargeGraph.viewport.setView({ x: marginLeft, y: batteryChargeGraph.height - marginBottom, width: batteryChargeGraph.width - (marginLeft+marginRight), height: -batteryChargeGraph.height+(marginTop+marginBottom) });
-		batteryChargeGraph.graph(simulationResult.batteryLevel, simulationResult.batteryLevel.map(x => x == 0 ? 1 : 0), [{className: ''}, {className: 'grid-recharge'}]);
+		batteryChargeGraph.graph(simulationResult.batteryLevel, simulationResult.batteryLevel.map((x, idx) => x == 0 || idx == simulationResult.batteryLevel.length - 2 ? 1 : 0), [{className: ''}, {className: 'grid-recharge'}]);
 		let months = ['Jan', 'Fev', 'Mar', 'Avr', 'Mai', 'Jui', 'Jui', 'Aou', 'Sep', 'Oct', 'Nov', 'Dec'];
 		let monthWidth = 365*24/12
 		for(let month = 0; month < 12; ++month) {

simulator/src/simulator.ts

@@ -1,7 +1,8 @@
 namespace Simulator {
 	export class Vehicle {
 		batteryCapacity: number;
-		batteryEfficiency: number = 1.0; // TODO: typical efficiency of a Li-ion battery (round-trip) is 90%
+		batteryEfficiency: number = 0.9;
+		gridTransformerEfficiency: number = 0.85;
 		
 		solarPanelEfficiency: number = 0.15;
 		solarPanelArea: number = 1.0; // in square meters
@@ -59,19 +60,25 @@ namespace Simulator {
 	}
 	
 	export interface SimulationResult {
+		vehicle: Vehicle;
+		
 		batteryLevel: number[]; // Remaining energy in the battery over time (one entry per hour), in Wh
 		gridChargeCount: number;
 		cumulatedGridRechargeEnergy: number; // Cumulated energy added to the battery from the power grid, in Wh of battery charge (actual power grid consumption will be slightly higer due to losses)
 		cumulatedSolarRechargeEnergy: number; // Cumulated energy added to the battery from the solar panel, in Wh of battery charge (actual generated power is slightly higher due to losses)
+		totalProducedSolarEnergy: number; // Cumulated energy produced (used or unused), before accounting for the battery recharge efficiency.
 		cumulatedMotorConsumption: number; // Cumulated energy consumed by the motor, in Wh. In this simulation, this is equal to the energy drawn from the battery.
 	}
 	
 	export function simulate(vehicle: Vehicle, solarIrradiance: number[], planning: OutingPlanning): SimulationResult {
 		let result: SimulationResult = {
+			vehicle: vehicle,
+			
 			batteryLevel: [],
 			gridChargeCount: 0,
 			cumulatedGridRechargeEnergy: 0,
 			cumulatedSolarRechargeEnergy: 0,
+			totalProducedSolarEnergy: 0,
 			cumulatedMotorConsumption: 0
 		};
 		
@@ -88,19 +95,20 @@ namespace Simulator {
 				let consumption = vehicle.motorConsumption(outing.distance, outing.ascendingElevation);
 				let production = vehicle.solarPower(solarIrradiance[hourIdx]) * 1.0; // produced energy in Wh is equal to power (W) multiplied by time (h)
 				
+				result.totalProducedSolarEnergy += production;
 				let solarCharge = production * vehicle.batteryEfficiency;
 				
 				// TODO: we should keep a margin because real users will recharge before they reach the bare minimum required for an outing
 				remainingBatteryCharge += solarCharge - consumption;
 				
-				let gridRecharge = false;
+				let fullGridRecharge = false;
 				if(remainingBatteryCharge > vehicle.batteryCapacity) {
 					solarCharge -= remainingBatteryCharge - vehicle.batteryCapacity;
 					remainingBatteryCharge = vehicle.batteryCapacity;				
 				}
-				else if(remainingBatteryCharge <= 0) {
+				else if(remainingBatteryCharge <= 0 || (day==364 && hour==23)) {
 					// TODO: detect if battery capacity is too low for a single outing, abort simulation and display an explanation for the user
-					gridRecharge = true;
+					fullGridRecharge = remainingBatteryCharge <= 0;
 					let rechargeEnergy = vehicle.batteryCapacity - remainingBatteryCharge;
 					remainingBatteryCharge += rechargeEnergy;
 					result.cumulatedGridRechargeEnergy += rechargeEnergy;
@@ -110,7 +118,7 @@ namespace Simulator {
 				result.cumulatedMotorConsumption += consumption;
 				result.cumulatedSolarRechargeEnergy += solarCharge;
 				
-				result.batteryLevel[hourIdx] = gridRecharge ? 0 : remainingBatteryCharge;
+				result.batteryLevel[hourIdx] = fullGridRecharge ? 0 : remainingBatteryCharge;
 			}
 		}