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Ampt V2

This commit is contained in:
ig 2023-06-13 12:53:37 +02:00
parent eeaefb0f54
commit fd92374a4f
5 changed files with 138 additions and 75 deletions
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67
csharp/Lib/Devices/AMPT/AmptDevice.cs
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@ -1,67 +0,0 @@
using InnovEnergy.Lib.Protocols.Modbus.Clients;
using InnovEnergy.Lib.Protocols.Modbus.Slaves;
using InnovEnergy.Lib.Units.Composite;
using InnovEnergy.Lib.Utils;
namespace InnovEnergy.Lib.Devices.AMPT;
public class AmptDevice
{
private readonly ModbusDevice<CommunicationUnitRegisters> _CommunicationUnit;
private readonly IEnumerable<ModbusDevice<StringOptimizerRegisters>> _StringOptimizers;
public AmptDevice(ModbusClient modbusClient)
{
_CommunicationUnit = new ModbusDevice<CommunicationUnitRegisters>(modbusClient);
_StringOptimizers = StringOptimizers(modbusClient);
}
public AmptStatus? Read()
{
var cuStatus = _CommunicationUnit.Read();
if (cuStatus.NumberOfStrings == 0)
return default;
var rs = _StringOptimizers
.Take(cuStatus.NumberOfStrings)
.Select(so => so.Read())
.ToArray(cuStatus.NumberOfStrings);
var busVoltage = rs.Average(r => r.Voltage);
var busCurrent = rs.Sum(r => r.Current);
var strings = rs.SelectMany(GetStrings).ToArray(rs.Length * 2);
return new AmptStatus
(
Dc : DcBus.FromVoltageCurrent(busVoltage, busCurrent),
Strings: strings
);
}
private static IEnumerable<DcBus> GetStrings(StringOptimizerRegisters r)
{
yield return DcBus.FromVoltageCurrent(r.String1Voltage, r.String1Current);
yield return DcBus.FromVoltageCurrent(r.String2Voltage, r.String2Current);
}
private static IEnumerable<ModbusDevice<StringOptimizerRegisters>> StringOptimizers(ModbusClient modbusClient)
{
var cache = new List<ModbusDevice<StringOptimizerRegisters>>();
ModbusDevice<StringOptimizerRegisters> GetOptimizer(Int32 i)
{
if (i < cache.Count)
return cache[i];
var modbusDevice = new ModbusDevice<StringOptimizerRegisters>(modbusClient, i * 16);
return modbusDevice.Apply(cache.Add);
}
return Enumerable
.Range(0, Byte.MaxValue)
.Select(GetOptimizer);
}
}

100
csharp/Lib/Devices/AMPT/AmptDevices.cs Normal file
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@ -0,0 +1,100 @@
using InnovEnergy.Lib.Protocols.Modbus.Channels;
using InnovEnergy.Lib.Protocols.Modbus.Clients;
using InnovEnergy.Lib.Protocols.Modbus.Slaves;
using InnovEnergy.Lib.Units.Composite;
using InnovEnergy.Lib.Utils;
namespace InnovEnergy.Lib.Devices.AMPT;
public class AmptDevices
{
private readonly ModbusDevice<CommunicationUnitRegisters> _CommunicationUnit;
private readonly IEnumerable<ModbusDevice<StringOptimizerRegisters>> _StringOptimizers;
public AmptDevices(String hostname, UInt16 port = 502) : this(new TcpChannel(hostname, port))
{
}
public AmptDevices(Channel transport) : this(new ModbusTcpClient(transport, 2))
{
}
public AmptDevices(ModbusClient modbusClient)
{
_CommunicationUnit = new ModbusDevice<CommunicationUnitRegisters>(modbusClient);
_StringOptimizers = StringOptimizers(modbusClient);
}
public AmptStatus Read()
{
CommunicationUnitRegisters? cuStatus = null;
try
{
cuStatus = _CommunicationUnit.Read();
}
catch (Exception e)
{
Console.WriteLine(e);
// TODO: log
}
// CommunicationUnit knows how many StringOptimizers are connected
var nStringOptimizers = cuStatus?.NumberOfStringOptimizers ?? 0;
// hardcoded: every SO has 2 strings (produced like this by AMPT)
var nStrings = nStringOptimizers * 2;
// read stati from optimizers
var soStati = _StringOptimizers
.Take(nStringOptimizers)
.Select(so => so.Read())
.ToArray(nStringOptimizers);
// every SO has 2 strings but ONE Dc Link Connection
// they are connected to a shared Dc Link, so Voltage seen by them should be approx the same.
// voltages are averaged, currents added
// TODO: alarm when we see substantially different voltages
var busVoltage = nStringOptimizers == 0 ? 0 : soStati.Average(r => r.Voltage);
var busCurrent = nStringOptimizers == 0 ? 0 : soStati.Sum (r => r.Current);
var dc = DcBus.FromVoltageCurrent(busVoltage, busCurrent);
// flatten the 2 strings of each SO into one array
var strings = soStati.SelectMany(GetStrings).ToArray(nStrings);
return new AmptStatus(dc, strings);
}
private static IEnumerable<DcBus> GetStrings(StringOptimizerRegisters r)
{
// hardcoded: every SO has 2 strings (produced like this by AMPT)
yield return DcBus.FromVoltageCurrent(r.String1Voltage, r.String1Current);
yield return DcBus.FromVoltageCurrent(r.String2Voltage, r.String2Current);
}
private static IEnumerable<ModbusDevice<StringOptimizerRegisters>> StringOptimizers(ModbusClient modbusClient)
{
var cache = new List<ModbusDevice<StringOptimizerRegisters>>();
ModbusDevice<StringOptimizerRegisters> GetOptimizer(Int32 i)
{
if (i < cache.Count)
return cache[i];
var modbusDevice = new ModbusDevice<StringOptimizerRegisters>(modbusClient, i * 16);
cache.Add(modbusDevice);
return modbusDevice;
}
return Enumerable
.Range(0, Byte.MaxValue)
.Select(GetOptimizer);
}
}

33
csharp/Lib/Devices/AMPT/AmptStatus.cs
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@ -3,4 +3,35 @@ using InnovEnergy.Lib.Units.Composite;
namespace InnovEnergy.Lib.Devices.AMPT;
public record AmptStatus(DcBus Dc, IReadOnlyList<DcBus> Strings) : IMppt;
public class AmptStatus : IMppt
{
public AmptStatus(DcBus dc, IReadOnlyList<DcBus> strings)
{
Dc = dc;
Strings = strings;
}
public DcBus Dc { get; }
public IReadOnlyList<DcBus> Strings { get; }
}
// public static AmptStatus Parallel(IReadOnlyList<AmptStatus> stati)
// {
// if (stati.Count == 0)
// {
// return new AmptStatus
// (
// Dc: DcBus.FromVoltageCurrent(0, 0),
// Strings: Array.Empty<DcBus>()
// );
// }
//
// var voltage = stati.Average(s => s.Dc.Voltage.Value);
// var current = stati.Sum(s => s.Dc.Current.Value);
// var dc = DcBus.FromVoltageCurrent(voltage, current);
//
// var strings = stati.SelectMany(s => s.Strings).ToList();
//
// return new AmptStatus(dc, strings);
// }

2
csharp/Lib/Devices/AMPT/CommunicationUnitRegisters.cs
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@ -14,5 +14,5 @@ public record CommunicationUnitRegisters
[HoldingRegister<Int16>(74)] public Int16 VoltageScaleFactor { get; private set; }
[HoldingRegister<Int16>(76)] public Int16 EnergyScaleFactor { get; private set; }
[HoldingRegister(78)] public UInt16 NumberOfStrings { get; private set; }
[HoldingRegister(78)] public UInt16 NumberOfStringOptimizers { get; private set; }
}

11
csharp/Lib/Devices/AMPT/Program.cs
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@ -1,6 +1,6 @@
using System.Text.Json;
using InnovEnergy.Lib.Protocols.Modbus.Channels;
using InnovEnergy.Lib.Protocols.Modbus.Clients;
using InnovEnergy.Lib.Units;
using InnovEnergy.Lib.Utils;
namespace InnovEnergy.Lib.Devices.AMPT;
@ -11,15 +11,14 @@ public static class Program
{
var ch = new TcpChannel("localhost", 5005);
var cl = new ModbusTcpClient(ch, 1);
var d = new AmptDevice(cl);
var d = new AmptDevices(cl);
while (true)
{
var x = d.Read();
AmptStatus x = d.Read();
x.ToCsv().WriteLine();
var options = new JsonSerializerOptions{WriteIndented = true};
(x, options).Apply(JsonSerializer.Serialize).WriteLine();
//Console.WriteLine(x);
}