reimplementation of the simulation in javascript (wip)

simulator/src/app.scss

@@ -0,0 +1,50 @@
+input[type=number] {
+    -moz-appearance:textfield;
+}
+
+.wide-label .field-label {
+	flex-grow: 2.5;
+}
+
+.dropdown.is-fullwidth {
+  display: flex;
+}
+
+.dropdown.is-fullwidth .dropdown-trigger,
+.dropdown.is-fullwidth .dropdown-menu {
+  width: 100%;
+}
+
+.dropdown-trigger.with-dropdown-icon::after {
+  border: 3px solid black;
+  border-radius: 2px;
+  border-right: 0;
+  border-top: 0;
+  content: " ";
+  display: block;
+  height: 0.625em;
+  margin-top: -0.4375em;
+  pointer-events: none;
+  position: absolute;
+  top: 50%;
+  right: 15px;
+  transform: rotate(-45deg);
+  transform-origin: center;
+  width: 0.625em;
+}
+
+.climate-zone {
+	cursor: pointer;
+}
+
+svg g {
+	filter: drop-shadow( 4px 4px 3px rgba(0, 0, 0, .7));
+}
+
+.climate-zone:hover {
+	filter: brightness(1.2);
+}
+
+svg text {
+	pointer-events: none;
+}

simulator/src/simulator-core.ts

@@ -0,0 +1,132 @@
+function clamp(x: number, mini: number, maxi: number) {
+	return x <= mini ? mini : (x >= maxi ? maxi : x);
+}
+
+class Vehicle {
+	batteryCapacity: number;
+	batteryEfficiency: number = 1.0; // TODO: typical efficiency of a Li-ion battery (round-trip) is 90%
+	
+	solarPanelEfficiency: number = 0.15;
+	solarPanelArea: number = 1.0; // in square meters
+	
+	additionalWeight: number; // additional weight, not counting cyclist and empty vehicle weight, in kg
+	
+	motorConsumption(distance: number, ascendingElevation: number): number {
+		// empirical measures
+		let maxWeight = 200; // in kg
+		let maxWeightAdditionalConsumption = 4; // in Wh/km
+		let maxTestedElevation = 500; // in meters
+		let maxTestedElevationConsumption = 7; // in Wh/m
+		let baseConsumption = 14; // in Wh/km
+		
+		let weightRelatedConsumption = clamp(this.additionalWeight * maxWeightAdditionalConsumption / maxWeight, 0, maxWeightAdditionalConsumption);
+		
+		// TODO: should not be multiplied by distance
+		// TODO: should be multiplied by total vehicle weight
+		let elevationRelatedConsumption = clamp(ascendingElevation * maxTestedElevationConsumption / maxTestedElevation, 0, maxTestedElevationConsumption);
+		
+		return distance * (baseConsumption + weightRelatedConsumption + elevationRelatedConsumption)
+	}
+	
+	solarPower(irradiance: number): number {
+		return irradiance * this.solarPanelArea * this.solarPanelEfficiency;
+	}
+}
+
+interface Outing {
+	distance: number; // in km
+	ascendingElevation: number; // in meters
+}
+
+class OutingPlanning {
+	constructor(public dailyDistance: number, public dailyAscendingElevation: number) {
+	}
+	
+	getOuting(dayOfWeek: number, hourOfDay: number, outing: Outing) {
+		let dailyRatio = 0;
+		
+		if(dayOfWeek >= 5) {
+			// week end
+			dailyRatio = hourOfDay == 10 ? 1.0 : 0.0;
+		}
+		else {
+			// other week day
+			dailyRatio = hourOfDay == 8 || hourOfDay == 16 ? 0.5 : 0.0;
+		}
+		
+		outing.distance = dailyRatio * this.dailyDistance;
+		outing.ascendingElevation = this.dailyAscendingElevation;
+	}
+}
+
+interface SimulationResult {
+	batteryLevel: number[]; // Remaining energy in the battery over time (one entry per hour), in Wh
+	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)
+	cumulatedMotorConsumption: number; // Cumulated energy consumed by the motor, in Wh. In this simulation, this is equal to the energy drawn from the battery.
+}
+
+interface SimulationParameters {
+	batteryCapacity: number,
+	additionalWeight: number,
+	climateZone: string,
+	dailyDistance: number,
+	dailyAscendingElevation: number
+}
+
+function runSimulation(vehicle: Vehicle, solarIrradiance: number[], planning: OutingPlanning): SimulationResult {
+	let result: SimulationResult = {
+		batteryLevel: [],
+		cumulatedGridRechargeEnergy: 0,
+		cumulatedSolarRechargeEnergy: 0,
+		cumulatedMotorConsumption: 0
+	};
+	
+	let remainingBatteryCharge = vehicle.batteryCapacity;
+	
+	let outing: Outing = { distance: 0, ascendingElevation: 0 };
+	
+	for(let day = 0; day < 365; ++day) {
+		for(let hour = 0; hour < 24; ++hour) {
+			let hourIdx = day * 24 + hour;
+			
+			planning.getOuting(day % 7, hour, outing);
+			
+			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)
+			
+			let solarCharge = production * vehicle.batteryEfficiency;
+			
+			remainingBatteryCharge += solarCharge - consumption;
+			if(remainingBatteryCharge > vehicle.batteryCapacity) {
+				solarCharge -= remainingBatteryCharge - vehicle.batteryCapacity;
+				remainingBatteryCharge = vehicle.batteryCapacity;				
+			}
+			else if(remainingBatteryCharge < 0) {
+				let rechargeEnergy = vehicle.batteryCapacity - remainingBatteryCharge;
+				remainingBatteryCharge += rechargeEnergy;
+				result.cumulatedGridRechargeEnergy += rechargeEnergy;
+			}
+			
+			result.cumulatedMotorConsumption += consumption;
+			result.cumulatedSolarRechargeEnergy += solarCharge;
+			
+			result.batteryLevel[hourIdx] = remainingBatteryCharge;
+		}		
+	}
+	
+	return result;
+}
+
+function startSimulation(parameters: SimulationParameters) {
+	let climateData = (<any>window)['climate-zones-data.csv'];
+	
+	let vehicle = new Vehicle();
+	vehicle.batteryCapacity = parameters.batteryCapacity;
+	vehicle.additionalWeight = parameters.additionalWeight;
+	let solarIrradiance: number[] = climateData[parameters.climateZone.toLowerCase()];
+	let planning = new OutingPlanning(parameters.dailyDistance, parameters.dailyAscendingElevation);
+	
+	let simulationResult = runSimulation(vehicle, solarIrradiance, planning);
+	console.log(simulationResult);
+}

simulator/src/simulator.html

@@ -12,7 +12,7 @@
 								<input name="battery-capacity" class="input" type="number" min="1" value="700"/>
 							</p>
 							<p class="control">
-								<a class="button is-static">kWh</a>
+								<a class="button is-static">Wh</a>
 							</p>
 						</div>
 					</div>
@@ -99,7 +99,7 @@
 					<div class="field-body">
 						<div class="field">
 							<p class="control is-expanded">
-								<a class="button is-primary is-fullwidth">Simuler</a>
+								<a id="simulate-button" class="button is-primary is-fullwidth">Simuler</a>
 							</p>
 						</div>
 					</div>

simulator/src/simulator.scss

@@ -24,54 +24,5 @@
 		font-size: $body-font-size; // we must set this on each direct child of the #simulator div, because if it's specified in em, it's multiplied by the parent font-size
 	}
 	
-	input[type=number] {
+	@import "app.scss";
-	    -moz-appearance:textfield;
-	}
-	
-	.wide-label .field-label {
-		flex-grow: 2.5;
-	}
-	
-	.dropdown.is-fullwidth {
-	  display: flex;
-	}
-	
-	.dropdown.is-fullwidth .dropdown-trigger,
-	.dropdown.is-fullwidth .dropdown-menu {
-	  width: 100%;
-	}
-	
-	.dropdown-trigger.with-dropdown-icon::after {
-	  border: 3px solid black;
-	  border-radius: 2px;
-	  border-right: 0;
-	  border-top: 0;
-	  content: " ";
-	  display: block;
-	  height: 0.625em;
-	  margin-top: -0.4375em;
-	  pointer-events: none;
-	  position: absolute;
-	  top: 50%;
-	  right: 15px;
-	  transform: rotate(-45deg);
-	  transform-origin: center;
-	  width: 0.625em;
-	}
-	
-	.climate-zone {
-		cursor: pointer;
-	}
-	
-	svg g {
-		filter: drop-shadow( 4px 4px 3px rgba(0, 0, 0, .7));
-	}
-	
-	.climate-zone:hover {
-		filter: brightness(1.2);
-	}
-	
-	svg text {
-		pointer-events: none;
-	}
 }

simulator/src/simulator.ts

@@ -33,4 +33,15 @@ document.addEventListener('DOMContentLoaded', function() {
 			closest(elt, e => e.classList.contains('modal')).classList.toggle('is-active', false);
 		});
 	});
+	
+	document.getElementById('simulate-button').addEventListener('click', e => {
+		let parameters: SimulationParameters = {
+			batteryCapacity: Number((<HTMLInputElement>document.querySelector('[name=battery-capacity]')).value),
+			additionalWeight: Number((<HTMLInputElement>document.querySelector('[name=additional-weight]')).value),
+			climateZone: (<HTMLSelectElement>document.getElementById('zone-selector')).value,
+			dailyDistance: Number((<HTMLInputElement>document.querySelector('[name=daily-distance]')).value),
+			dailyAscendingElevation: Number((<HTMLInputElement>document.querySelector('[name=daily-elevation]')).value),
+		};
+		startSimulation(parameters);
+	});
 });