Archive for the ‘Zynq’ Category

ELMG Digital Power INC In California

Monday, November 14th, 2016

ELMG Digital Power Inc has long held the ambition of being the best digital controlled power electronics design company in the world.

And, to that end, we are pleased to announce that we are extending our operations to include a development and support site in Camarillo, California.

ELMG Digital Power has established this base in Camarillo, California to allow us to be well-positioned to support the increasing growth of digital power electronics control in California and across the country.  The team of engineering staff will be available to meet the needs of nationwide clients, who will also have access to all the available expertise and resources of ELMG Digital Power’s global team.

ELMG Digital Pwoer Control Platform Technology enables real time logging and visualization of waveforms from around the world or across the lab via the ethernet.

ELMG Digital Power Control Platform Technology enables real time logging and visualization of waveforms from around the world or across the lab via the ethernet.

ELMG Digital Power is committed to the provision of support, technology, know-how and products that will enable our clients to be respected authorities and do great thing in the area of digital power control.

Our clients can certainly have confidence in ELMG Digital Power’s expertise and experience as for the past twenty five years we have been working on digitally controlled power converters in motor drives, industrial switch mode power supplies, reactive power compensation, medium voltage system, power quality systems, motor starters, appliances and telecom switch-mode power supplies. ELMG Digital Power places a high value on innovation, safety and sustainability. Quality is one of our cornerstones, and even as we seek to streamline, update and improve, maintaining quality and reliability remains paramount.

ELMG Digital Power’s Eco System Approach of design, development, know-how sharing through training and partnerships is our principal methodology.  We are proud of our successful Eco System of solutions, training, support and long term partnership.

Digital Controller logging implementation

Digital Controller logging implementation

Some of the companies involved in the control and measurement of electric power we have worked closely with include (Click for testimonial or details)

Dr. Hamish Laird at the ELMG Camarillo Office

Dr. Hamish Laird teaching a class at the ELMG Camarillo Office

As well as providing world-leading FPGA based digital power electronics controller technology, ELMG Digital Power have developed products used in a variety of applications all around the world. These include

  • power transmission,
  • off-shore wind turbine DC Connection systems,
  • grid scale energy storage,
  • internal combustion engine management systems,
  • traction systems for ships,
  • communication links for power electronics
  • solar inverters
  • high voltage motor starters and
  • high voltage UPS to name just a few.

More detail on ELMG product development and systems, our key know-how and technologies can be found on our website here 

zynq webinar presentation slides

ELMG Digital Power is a Xilinx Alliance Program member providing world leading FPGA based digital power control platforms

We are excited and pleased about this new venture and look forward to discussing and supporting your digital power electronics design and technology needs from our new location at:
601E Daily Drive, Suite 112,
Camarillo, CA 93010
Phone: +1 805 764 2027
For more information contact ELMG Digital Power INC in California:

Louise Jennings

enquiries@elmgdigitalpower.com

Zynq Webinar Presentation Slides

Wednesday, July 27th, 2016

Dr. Tim King presented the Digital Power Control on a Zynq webinar.

In the presentation Dr. King detailed how the programmable logic fabric of the Zynq was fantastic for low latency and high precision digital power control.

zynq webinar presentation slides

What to do with the ARM A9 Cores?

He also outlined how to make use of the ARM A9 cores

The Zynq webinar presentation slides

The slides are available here


Download presentation




 

Free Webinar High Performance Digital Control on Zynq

Sunday, July 10th, 2016

If you have just sat down at your desk with a coffee, then put that aside for a minute and grab your diary.

Review your schedule for Tuesday 12th July 2016 and consider this stellar opportunity: on that day ELMG Digital Power will be hosting a FREE webinar on Digital Power using Xilinx Zynq SoC.

That’s right, from the comfort of your own desk you can join ELMG Digital Power (Members of the Xilinx Alliance Program) for their Zynq Digital Power Webinar and expand your knowledge and expertise by discovering:

* What is important in digital power, including numeric precision and latency
* How to design a compensator in the digital domain
* Why you would use a FPGA for digital power and why the Zynq SoC in particular
* Key issues in digital controllers in programmable logic, such as the serial-parallel trade-off, fixed or floating point,      choosing sample rates and what precision to use
* The building blocks for digital control and ELMG’s licensable IP cores
* IIR digital filter design (a case study) along with understanding the delta operator
* Using the ARM cores in the Zynq to your full advantage.

This webinar will be hosted and presented by Dr. Tim King, ELMG Digital Power’s Principal FPGA Engineer. Tim has considerable experience the design and implementation of varied digital control systems and IP for power electronics on FPGA platforms.

The webinar, which includes a short Q&A session, will be held on Tuesday 12th July and is available globally. Just choose a time that best suits you from these three options:

1. July 12th 2016 – commencing at 4pm in Christchurch NZ. (This will be 2pm Sydney, 1pm Tokyo, and 9:30am Delhi)





Register for Asia-Pacific




 

2. July 12th 2016 – commencing at 9am London (10am Berlin)





Register for Europe




 

3. July 12th 2016 – commencing at 1pm San Francisco (3pm Houston, 4pm New York)





Register for USA



Spaces are limited.  

See you at the webinar

 

 

Control Scope Integrated into Digital Power Controller

Friday, July 8th, 2016

How can I look at my digital signals in my power controller?

One of the big issues when working on digital control of power electronics is being able to look at the digital signals inside your controller.  In order to see what is going on inside the control the digital signals need to be brought out so you can look at them.

When a DAC isn’t good enough.

One way to do this is with a digital to analog converter (DAC) where the digital stream is sent out as an analogue signal.  These DAC channels are really useful and should be on every digital power electronics controller.  However processing power usually limits the logging or data streaming to a DAC to a low number of channels.  Each channel requires a scope channel of its own to do measurement.  Any measurement is limited in length to the scope’s memory and the scopes sample rate.

scope-capture

ELMG Digital Power ControlScope

Data Collection in the Controller and Detecting Events

There is also the issue that collecting enough data to allow event detection such as;

  • single sample errors
  • clipping
  • overflow
  • underflow or precision loss and
  • bursty instability due to precision loss

can be a very difficult large load on the control processor and memory if the data logging rate is very high or if the rate of the problem is very low.

Control Scope Integrated into Digital Power Controller

To solve this problem we put the data collection and logging into the controller but without loading the controller.

Using the Xlinx Zynq system on a chip (SoC) we use the flexibility of running Linux on one of the two ARM 9 cores to provide the high speed gigabit Ethernet connectivity.

Dlog Implementation

Dlog Implementation

We also use the Linux for secure remote access if required.

Using ELMG Power Core IP blocks and know how we create firmware in the FPGA fabric of the Zynq.  This connects to the Linux kernel and then the Linux user space.  Data can be logged at full sample rates into SD cards or MMX memory and simultaneously out via the Gigabit Ethernet to the internet.

To be very clear no Linux code is included in the power electronics control function which is all implemented in the FPGA fabric on the Zynq.

Put a scope on the other end of the Ethernet

The video shows the ELMG ControlScope application connected to the ELMG Digital Power Zynq data collection system (named Dlog).

This system implements a fully functional oscilloscope that allows the internal operation of the digital control to be shown and logged.

With gigabit Ethernet logging rates of 25 M bytes per second are possible using Dlog.

This means that logging of your power converter performance and waveforms, scope function or debugging can be done over the internet.

To evaluate the Dlog and the ControlScope than click below.  


Request Dlog and ControlScope Information



Free Webinar on Digital Power using Zynq

Sunday, July 3rd, 2016

On Tuesday 12thJuly, we would like to offer you the opportunity to learn about Digital Power using Xilinx Zynq SoC.

Join ELMG Digital Power (Members of the Xilinx Alliance Program) for their Free Zynq Digital Power Webinar and expand your knowledge and expertise by discovering:

  • What is important in digital power, including numeric precision and latency
  • How to design a compensator in the digital domain
  • Why you would use a FPGA for digital power and why the Zynq SoC in particular
  • Key issues in digital controllers in programmable logic, such as the serial-parallel trade-off, fixed or floating point, choosing sample rates and what precision to use
  • The building blocks for digital control and ELMG’s licensable IP cores
  • IIR digital filter design (a case study) along with understanding the delta operator
  • Using the ARM cores in the Zynq to your full advantage.
Free webinar on digital power using zynq

Xilinx Zynq SoC is a great processor for digital power electronics control.

Dr. Tim King presents

The free webinar on digital power using Zynq will be hosted and presented by Dr. Tim King, ELMG Digital Power’s Principal FPGA Engineer. Tim has considerable experience the design and implementation of varied digital control systems and IP for power electronics on FPGA platforms.

This exciting opportunity is free and includes a short Q&A session with Dr. Tim King.

Dr Tim King - Free Webinar on Digital Power using Zynq

Dr Tim King

When and where

The webinar will be held on 12th July and is available globally in your time zone. Just choose a time that best suits you from these three options:

Spaces are limited.

July 12th 2016 – commencing at 9am London, England. 1000 (10am) Berlin Germany.


Register for Europe

 

July 12th 2016 – commencing at 1pm San Francisco, 3pm Houston, 4pm New York.




Register for USA

 

July 12th 2016 – commencing at 4pm in Christchurch New Zealand, 2pm Sydney Australia, 1pm Tokyo Japan, and 9:30am New Delhi, India





Register for Asia-Pacific




If you cannot attend at the scheduled time then register now and watch the recording later.

Spaces are limited.

Migration from MCU/DSP to FPGA for Power Electronics: Part 1 Software

Tuesday, November 17th, 2015

In a recent discussion we were asked about the migration path from MCU/DSP to FPGA.

“I am probably not alone when I use MCU/DSP devices to implement control algorithms, protection, logic etc to control the power hardware, using code such as ASM, C or C++, but want the advantages of FPGA. What suggestions do you have to start this migration, both in terms of a cheap evaluation board, and software tools, that can be targeted at driving various topologies and speeds.”

Thanks to Anthony W. for the question.  We get asked similar migration from MCU/DSP to FPGA for power electronics questions where the emphasis is more about retaining the value of an existing code base and coding team expertise while leveraging the flexibility of the FPGA.

As the first question states MCU/DSP devices are a common tool to implement control algorithms, protection, logic and sequencing for  control power hardware, using code such as ASM, C or C++.  However they do not have the power and flexibility of FPGAs. What is the best way to approach a migration from MCU/DSP to FPGA, both in terms of evaluation boards, and software tools, for a wide range of power electronic applications?

Best migration path MCU/DSP to FPGA for Power Electronics

There are a number of pathways to do this. The first one is High Level Synthesis. This is basically writing FPGA code in C. It is a very powerful tool but it does take some know how to make sure that you can get the most benefit out of the transition to FPGA. The downside of this is that it is quite expensive. There are however a couple of FPGA kits out there that do come with a kit-locked license (node-locked and locked to the FPGA model on the board).

Processor Inside

Another way is to use an FPGA with a processor, or processors, inside it. These processor can be soft-cores like Xilinx’s Microblaze or hard-cores like the twin ARM A9s in Xilinx’s Zynq series. (Reports on FPGA development projects show that almost 50% have some sort of processor.)  This processor allows you to directly port your code from your MCU/DSP to the Zynq/Microblaze and be ready to go. This may seem counter-productive as going from one processor to another without really gaining FPGA power is work for no reward.  The advantages come when you move parts of your code (the high intensity tasks such as the control algorithms) from C to the FPGA hardware. This provides a power boost for the important parts of your code whilst still having the simplicity of C for the easy flow of your code. A good analogy would be that the FPGA parts are the equivalent of the ASM parts on the MCU/DSP but with the superman type speed advantage of doing things in parallel in the FPGA fabric.

Best of both

Xilinx has also combined the HLS and the C coding options with their SDSoC product. It is designed for the Zynq SoC .  The coding is done in C. However you can use HLS to accelerate certain parts of the code for you to gain the most benefit.

Getting the most out of the Zynq solution does require either the expensive HLS toolchain and training in that or writing your own HDL. Another option is to purchase IP that other companies have written.  This allows you to create a fast and efficient system without needing to know coding of an FPGA in HDL or C.  ELMG Digital Power has a large suite of power electronics IP to get your application off the ground fast.

Prototyping and Development Platforms

In part 2 of this blog post, which is coming later, the answers to the questions

“How can I prototype this when the chip is BGA only?”

and

“What is an appropriate development platform or dev board?”

are covered.

Download the report ‘Your Digital Power Future – Roadblocks to Avoid’ to learn about the three key issues to watch out for in the Digital Control of Power electronics.


Download report now