dcdc | multiple Docker Compose projects | Continuous Deployment library

by scoremedia Shell Version: Current License: Apache-2.0

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kandi X-RAY | dcdc Summary

dcdc is a Shell library typically used in Devops, Continuous Deployment, Docker applications. dcdc has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

DCDC's purpose is to provide an easy way to work with multiple Docker Compose projects locally by:. NOTE: DCDC only works with macOS. It is likely possible to work for other operating systems although will require some rejigging.

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dcdc has a low active ecosystem.

It has 8 star(s) with 1 fork(s). There are 45 watchers for this library.

It had no major release in the last 6 months.

There are 0 open issues and 1 have been closed. On average issues are closed in 122 days. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of dcdc is current.

Quality

dcdc has no bugs reported.

Security

dcdc has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

License

dcdc is licensed under the Apache-2.0 License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

dcdc releases are not available. You will need to build from source code and install.

Installation instructions, examples and code snippets are available.

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dcdc Key Features

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dcdc Examples and Code Snippets

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Community Discussions

Trending Discussions on dcdc

PI-Controller doesn't reach reference value with inverter and PMSM in Modelica

How to fix "Model is not globally balanced" with SMPM and inverter

Wrong simulation results when connecting an inverter with a smpm in Modelica

AWK match lines/columns then compare another column and print

Best way to read this xml in c#

Reference same SQL column to use in CASE clause

Agreggate rows from SQL combining values and removing NULLs into a single row

QUESTION

PI-Controller doesn't reach reference value with inverter and PMSM in Modelica

Asked 2019-Nov-06 at 09:41

I'm trying to investigate the Modelica example Modelica.Electrical.Machines.Examples.SynchronousInductionMachines.SMPM_VoltageSource but I replaced the signalVoltage by an inverter and a PWM block signalPWM which is based on Modelica.Electrical.PowerConverters.DCDC.Control.SignalPWM. So instead of sine voltages I want to investigate PWM modulated voltages. The problem is that the controller keeps increasing its output linearily because of the integrating part of the controller as it never reaches the reference value of the desired q-current. In addition it outputs strange values for voltageController.y[1] in the range of [24E3,...,150E3], which is probrably the problem.

The controller output:

and the current output:

Unfortunately I don't understand why the controller works fine with the sine voltages and doesnt with the PWM voltages.

Below is my main model:

...

ANSWER

Answered 2019-Nov-06 at 09:41

Original Answer

With a voltage of ±200V and a load of 120Nm its simply not possible to obtain the demanded currents.

In contrast to the original MSL example you use a sign torque with 120Nm as load. If you use that in the original MSL example, you will notice that the machine keeps accelerating and that the required voltage grows without bounds (plot e.g. smpm.plug_sp.pin[1].v to see that).

In your example the voltage is limited to 200V. The demanded currents of -53A and 84.6A are not obtained, but the machine still generates a torque of 127Nm, which lets the machine accelerate. With increasing speed the required voltages increase also for a certain torque / current demand - but in your example the actual voltage is limited. Therefore the set currents are never reached.

What you can consider:

increase the available voltage
(but for the current setup you need unrealistic high values of several thousand volts)
demand lower currents
(You can set Id on 0 anyway, as you have a machine with Ld=Lq, so only Iq produces torque and Id is used for field weakening)
make your current controllers aware of the voltage limit
(use e.g. Modelica.Blocks.Continuous.LimPID for that, which contains anti-windup already)

Updated Answer

The problem lies in your PWM computation. I rebuilt the example with the original SignalPWM block from the MSL and a VoltageToDutyCycle component.

In the screenshot below the simulation results of the new model with f=14kHz are compared with the MSL version with ideal voltage supply. The screenshot shows the controller output (like in your question) and Iq.

The results were computed with the package below. It contains

a partial model for all common components and variables
an example with PWM and inverter
an example with ideal continuous voltage supply

Note that the hints from my original answer remain, if the maximum voltage is reached. The controllers are not aware of the voltage limit, which can lead to integrator windup problems.

Source https://stackoverflow.com/questions/58394269

QUESTION

How to fix "Model is not globally balanced" with SMPM and inverter

Asked 2019-Sep-16 at 08:55

Based on the example Modelica.Electrical.Machines.Examples.SynchronousInductionMachines.SMPM_VoltageSource, I am trying to use the inverter from Modelica.Electrical.PowerConverters.DCAC.MultiPhase2Level to feed the SMPM. Unfortunately I get the error

Simulation model is not globally balanced, having 337 variables and 335 equations

but I can't figure out which two equations are missing.

What confuses me even more is that the model is balanced if I remove the signalPWM, inverter and the constantVoltage sources.

...

ANSWER

Answered 2019-Sep-12 at 09:22

You vectorized the component componentsignalPWM, using m=3 instances. But only the first instance has its input connected.

Change the connection

Source https://stackoverflow.com/questions/57902981

QUESTION

Wrong simulation results when connecting an inverter with a smpm in Modelica

Asked 2019-Sep-09 at 15:17

I'm using SystemModeler from Wolfram to investigate the system behaviour of an inverter connected to a permanent magnet synchronous machine. Unfortunately I get wrong simulation results eventhough I only used components from the Modelica Standard Library.

I tried several settings so far with my model below.

...

ANSWER

Answered 2019-Sep-09 at 15:17

What you are trying to do in you model is, to let a synchronous machine operate at nominal electrical frequency directly from standstill. This will make the machine "fall out of step", which is the reason for the machine not to operate as you would expect, but just oscillate in a seemingly random manner.

Try to reduce sine[*].freqHz to fill(0.01*f1, m) and you will see that there it will - after some oscillations - start to operate at one percent of its nominal frequency. It's just that the machine cannot overcome the oscillations for the jump to the nominal frequency.

There are multiple possibilities to work around that issue:

Initialize the machine properly: This can be done by setting at least smpm.wMechancial.start and smpm.phiMechancial.start to the correct values. Additionally it would be good to also initialize the phase currents correctly. This can be pretty tedious to do. But gives the advantage that you don't have to ramp up the speed.
It's likely easier to copy parts of the example Modelica.Electrical.Machines.Examples.SynchronousInductionMachines.SMPM_Inverter, where a voltage-frequency-controller is used to start the machine.
Many synchronous machines are actually controlled (e.g. by field-orientation or direct-torque control). For this some clues can be taken from Modelica.Electrical.Machines.Examples.SynchronousInductionMachines.SMPM_CurrentSource and Modelica.Electrical.Machines.Examples.SynchronousInductionMachines.SMPM_VoltageSource.

Additionally I would suggest to first try to get your example running with a continuous inverter like in Modelica.Electrical.Machines.Examples.SynchronousInductionMachines.SMPM_Inverter. If that works asexpected, move on the switched one.

Some things that look suspicious to me:

smpm.Rs seems pretty big to me with 4.7 Ohms especially when considering the inertias smpm.Jr (with 0.29 kg.m2) and inertia1.J (with 0.29 kg.m2).
For testing, try to increase the switching frequency above 1kHz. This is a bit low for a fundamental wave frequency of 50Hz (although it should work).

Source https://stackoverflow.com/questions/57855336

QUESTION

AWK match lines/columns then compare another column and print

Asked 2018-Oct-23 at 21:16

relatively new to AWK here. Wanting to compare two files. First two columns are to match in order to compare the 3rd column. 3rd column needs to be 100 larger in order to print that line from the second file. Some data may exist in one file but not in the other. I don't think it matters to AWK, but spaceing isn't very consistent for delimination. Here is a small snipit.

File1

...

ANSWER

Answered 2018-Oct-23 at 21:16

you need to key the value with the same ($1,$2) combination. Since we don't use a for any other purposes just store the value there.

Source https://stackoverflow.com/questions/52957603

QUESTION

Best way to read this xml in c#

Asked 2018-Aug-09 at 14:35

This is my xml file:

...

ANSWER

Answered 2018-Aug-09 at 14:35

XmlSerializer serializer = new XmlSerializer(typeof(List));

using(FileStream stream = File.OpenWrite("filename"))
{
  List list = new List();
  serializer.Serialize(stream, list);
}

using(FileStream stream = File.OpenRead("filename"))
{
  List dezerializedList = (List)serializer.Deserialize(stream);
}

Source https://stackoverflow.com/questions/51769733

QUESTION

Reference same SQL column to use in CASE clause

Asked 2018-Apr-29 at 20:19

I need tome assistance with an SQL query in DB2 using QMF for Qrkstation z/OS V11.1 Fix Pack 3.

I am querying a couple of fields from different tables. I am showing some timestamps too. I need a CASE clause which uses one of those timestamps.

The idea is that one of the timestamps can have data or not (null) because I am using LEFT JOIN with that table (if value then bring it if not then blank) So the CASE clause would need to check that column/field and if it has data (IS NOT NULL) then put value 'Delivered'. This logic is no working for me as seen in the following images.

...

ANSWER

Answered 2018-Mar-02 at 20:29

I think the main issue is that you are selecting the maximum value returned by the case statement for each id rather than the value of the CAS Statement for the maximum date. So the order of those values is (On time CAD, Non physical, More than 10 days..., Less than 3 days..., Delivered, Between 6..., Between 3). So if all those id's had a record where ship_evnt_tms was null, the max vbalue coming out of that case will be More than 10 days.... It is also strange that you are using distinct with aggregation. Instead you could just group on po_id. Maybe try:

Source https://stackoverflow.com/questions/49072945

QUESTION

Agreggate rows from SQL combining values and removing NULLs into a single row

Asked 2018-Mar-01 at 23:07

I have the following query in DB2 for which I need to combine the rows with values with the ones with nulls into a single line, eventually removing the nulls when there is valid data for that column.

The SQL is

...

ANSWER

Answered 2018-Mar-01 at 23:07

Just use aggregation:

Source https://stackoverflow.com/questions/49059972

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

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