Package io.openems.edge.timedata.api.utils

Class CalculateEnergyFromPower

java.lang.Object

io.openems.edge.timedata.api.utils.CalculateEnergyFromPower

public class CalculateEnergyFromPower
extends Object

Calculates the value for energy channels in [Wh] from Power values in [W].

This is commonly used to calculate SymmetricEss or SymmetricMeter ActiveChargePower and ActiveDischargePower from ActivePower channels. To use it, you have to:

1. Make your OpenemsComponent implement TimedataProvider:

    public class ComponentImpl extends AbstractOpenemsComponent implements
    OpenemsComponent, TimedataProvider, EventHandler {
    

2. Add a @Reference to Timedata. It's a good idea to make this reference 'dynamic', otherwise your component will not start if there is no Timedata service configured.

    @Reference(policy = ReferencePolicy.DYNAMIC, policyOption = ReferencePolicyOption.GREEDY, cardinality = ReferenceCardinality.OPTIONAL)
    private volatile Timedata timedata = null;
    

3. Add a private instance of CalculateEnergyFromPower for each energy channel:

    private final CalculateEnergyFromPower calculateEnergy = new CalculateEnergyFromPower(this,
                   SymmetricEss.ChannelId.ACTIVE_CHARGE_ENERGY);
    

4. Call the update(Integer) method on each cycle - e.g. via an EventHandler.

    this.calculateEnergy.update(power);
    

Constructor Summary

Constructors

Constructor	Description
CalculateEnergyFromPower(TimedataProvider component, ChannelId channelId)

Method Summary

Modifier and Type	Method	Description
void	update(Integer power)	Calculate the Energy and update the Channel.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

CalculateEnergyFromPower

public CalculateEnergyFromPower(TimedataProvider component,
 ChannelId channelId)

Method Details

update

public void update(Integer power)

Calculate the Energy and update the Channel.

Parameters:

power - the latest power value in [W]