News - Page 5 of 24

Reliable and Efficient Testing with E-Motor Emulation

Posted on 21/06/2023 by Dave McGuffog

BriPower has announced the release of a new E-Motor Emulation (EME) feature for its KGS series programmable power supply. This technology is an important tool for development and testing of the electric drive system in new energy vehicles.

The feature is aimed at Full Power Inverter Testing. You can load a virtual description of a machine, test your inverter hardware and software, then change the motor in software to test it again. It offers the advantages of a full power test, but with the flexibility of modelling.

The E-Motor Emulator combines hardware in the loop (HIL) technology to achieve fast dynamic response, high accuracy, low power consumption, low cost and high flexibility.

KGS series cabinet

Traditional testing methods require a motor testing platform that includes a real-time simulator and a power amplifier. This method has power limitations, large loss, and poor flexibility, and cannot fully verify the function of the Device Under Test (DUT).

BriPower’s -EME option can accurately control the load on the three-phase output of the motor controller by solving dynamic mathematical models of machines like permanent magnet synchronous motors (PMSM) and asynchronous motors (ASM). The –EME can be programmed to create fault scenarios repeatedly that could be very difficult to achieve on a real motor/dyno set up. It can also be used to create parameter sweeps to verify a controller design will work well with real life issues like manufacturing tolerances or degradation.

Parameters

The KGS series E-motor emulator has a switching frequency of 120 kHz, fast dynamic response, and high simulation quality. It can apply accurate voltage at the DUT dynamically and can monitor the model parameters in real-time by modifying the motor parameters.

The KGS series E-motor emulator includes multiple output power levels from 45 KVA to 540 KVA. In the frequency range of DC~2000 Hz, the maximum output voltage of 750 VL-N.

KGS series E-motor emulator topology Topology of the KGS Series E-Motor Emulator

BriPower’s E-Motor Emulator aims to provide a reliable and efficient testing method for companies in the electric vehicle industry to ensure safety, reliability, and comprehensive functions of their components. Speak to the technical team at PPM Power about your requirements by contacting us.

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Protecting DC Power Networks with Schaltbau Contactors

Posted on 15/06/2023 by Dave McGuffog

What are contactors?

DC and AC contactors are switches used to connect and disconnect electrical power sources to loads, activated by a control signal. When a control voltage is applied, the magnetic field pulls an electrical bridge into an active state and the main contacts close, while springs in the contactor restore the initial state of the load circuit when there is no control voltage. If switching takes place under load, an electric arc is generated in the contactor. DC contactors face the challenge of extinguishing this arc quickly due to the absence of zero crossing of the voltage.

Schaltbau C801 series DC contactor

C801 DC Contactor

What makes Schaltbau contactors unique?

Schaltbau DC contactors have effectively overcome this challenge by suppressing the arc, a key feature of the product. The arc’s formation has two main effects: current continues to flow even when the contacts are open, and very high temperatures occur, causing damage to the contacts and system parts. The contactors counteract this with various measures, including an arcing chamber that elongates, cools, and extinguishes the arc without the need for large clearances.

Arc chamber inside view

Inside view of the arc chamber

The contactors are fully bi-directional and optimised for making, changeover and fault protection; for reduced failures and safe switching.

Combining electro-magnetic and permanent magnetic blowout

In contrast to contactor concepts purely based on electromagnetic blowout, Schaltbau contactors have permanent magnets in place to displace the arcs created when switching, as soon as they form. This means the arcs are extinguished quicker, leading to a significant reduction in heat when switching off. The lower degree of wear on the contacts makes it possible to greatly increase maintenance intervals.

In addition to these reduced maintenance requirements, the open air design of the contactors allows them to be inspected and serviced. Parts such as contacts and arc chambers can also be individually replaced, increasing the life of each contactor even further.

Double break and auxiliary contacts

The double-break contact system deals with critical currents, which are high voltage and low current and normally difficult to switch. They provide double the opportunity to interrupt the arc and better electrical performance.

This system is also unaffected by polarity, providing better functionality. The contactors can also be fitted with auxiliary contacts that allow for remote monitoring via control lines.

Find the ideal contactor

Schaltbau contactors are highly configurable with difference voltages and configurations to meet the needs of customers and come in various design versions to cater to a wide range of uses.

Speak to the technical team at PPM Power – we can help you find the right contactor for your application.

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High Quality Components Available for Power Electronics Applications at CPE23

Posted on 05/06/2023 by accountcontrol@ppm.co.uk

Explore optimised solutions and components from PPM Power at the Centre for Power Electronics (CPE) Annual Conference 2023.

The 2023 edition of CPE, organised by IMAPS-UK, will be held on 4^th and 5^th July at the Jubilee Conference Centre, University of Nottingham and brings together leading experts, researchers and innovators in the power electronics field to share insights, collaborate on new ideas and explore the latest advancements in power electronics technology.

Jubilee Conference Centre

PPM Power – as a leading provider of cutting-edge solutions and high-quality components for power electronics, high voltage, pulse power and analytical instruments – will present a selection of relevant products and solutions. Including:

Semiconductor modules, with the Hitachi RoadPak and Sanrex SiC modules; known for their exceptional performance and reliability.
DC link capacitors and test kit solutions; providing efficient and reliable power conversion capabilities.
HV switches; offering robust and efficient switching solutions for high voltage applications.
Capacitors; delivering high-energy storage and outstanding performance in demanding environments.
Connectors and resistors; ensuring reliable interconnections and precise control in power electronics systems, including EBG’s low inductive design, long-term reliability and performance.
Programmable power supplies; offering flexibility and configurability for various applications.
Cooling solutions, such as innovative cold plates that enhance system reliability and prolong the lifespan of DC link capacitors.

RoadPak modules on coldplate

In addition, PPM Power specialises in developing custom hardware solutions using the latest technologies to meet specific customer requirements. Recent developments include cold plates for integrated cooling of the components within a conversion system, and a silicon carbide inverter power stack for ultra-high power density applications.

Phil Surman of PPM Power said: “We are looking forward to the Centre for Power Electronics Annual Conference. It’s a great place to engage with industry professionals, share expertise and explore collaborative opportunities to drive innovation in the power electronics field.”

This CPE Conference will feature keynotes and presentations from leading academics and industrialists, views of the future demands for power electronics and drives, and the latest research advances from the Centre for Doctoral Training in sustainable electric propulsion.

Posted in Capacitors, High Voltage, Power Supplies, Resistors, Semiconductors | Comments Off

Enhanced Selection of Ceramic Capacitors

Posted on 09/05/2023 by Andrea Kerr

Ceramic capacitors are used in a variety of applications such as high voltage power supplies, filtering, coupling and decoupling, timing, voltage multipliers and by-pass circuits. The ceramic capacitor voltage ratings are high for their size and offer a selection of dielectrics contributing to high stability or high permittivity.

PPM Power has expanded its range of Ceramic Capacitors from Dean Technologies to now encompass 11 Series divided into two application classes and four form factors.

Dean NY3 Series ceramic capacitors

Capacitor Technology	Form Factor	Dielectric Codes	Capacitance Range	Typical Tolerance	Working Voltage	Temperature Range	Capacitor Class
NX5 Series	Doorknob Capacitor	T3M, Y5P	100 - 8000pF	+/- 10%	10 - 50kVDC	-20 to 85 Deg. C	I & II
JX5 Series	Doorknob Capacitor	T3M / N4700, Y5P	100 - 8000pF	+/- 10%	10 - 50kVDC	-40 to 125 Deg. C	I & II
NY2 Series	Radial Lead Capacitor	BxN, Y5P, Y5T, Z5U	100 - 5600pF	+/- 20%	3 - 15kVDC	-20 to 85 Deg. C	II
CK1 Series	Radial Lead Capacitor	NP0, SL	2 - 300pF	+/- 10%	3 - 6kVDC	-20 to 85 Deg. C	I
TY1 Series	Radial Lead Capacitor	NP0, SL	10 - 220pF	+/- 10%	3 - 20kVDC	-	I
TY2 Series	Radial Lead Capacitor	BxN, Y5P, Y5U,Y5V, Y6P	100 - 10000pF	+/- 20%	3 - 20kVDC	-	II
TY4 Series	Radial Lead Capacitor	BxN, Y5P, Y5U,Y5V	100 - 10000pF	+/- 20%	3 - 20kVDC	-	II
NY3 Series	Axial Lead Capacitor	Y5P, Y5U	220 - 6800pF	+/- 20%	10 - 20kVDC	-	II
ST1 Series	Capacitor Stacks	Y5P, Z5U	250 - 1000pF	+/- 20%	6 - 12kVDC	-	II
ST2 Series	Capacitor Stacks	Y5P, Z5U	130 - 1000pF	+/- 20%	10 & 20kVDC	-	II
ST3 Series	Capacitor Stacks	Y5P	500 & 1000pF	+/- 20%	10 & 20kVDC	-	II

Class I offer high stability voltage and temperature coefficients with low capacitance loss for resonant circuit applications.

Class II offer high volumetric efficiency, where only a minimum value of capacitance is required such as buffering, by-pass and coupling applications.

The stability of the capacitor is dependent on the ceramic dielectric.

As different dielectrics give the capacitors very different properties, choosing the specific type of dielectric is an important consideration, for example, NP0 is the best for high voltage, low temperature coefficients and stability. BxN however, has 5% variation over the temperature range and only 2.5% loss on voltage.

Click on each of the dielectric curve images to view at full size.

To choose the best for your requirements, dielectric curve information is available across all of the series.

Contact our technical sales team who are on hand to help with any queries, bespoke requirements or order placement.

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New Ultra High Power Resistors for Lower Pulse Ratings

Posted on 21/04/2023 by Dave McGuffog

PPM Power has added to its extensive range of EBG high power thick film resistors with several new series specially re-engineered to cater to applications that demand lower pulse ratings.

The new additions offer superior performance and reliability for high average power applications. EBG ultra high power resistors have high isolation, long-term reliability and excellent thermal performance.

EBG ultra high power resistors

With the ability to maintain stable performance over extended usage periods, the ultra high power resistors have been used in a variety of applications, from power generation and transportation to motorsports and aerospace. They support power levels up to 2000 W and are designed to meet critical safety requirements, making them an ideal solution for applications where performance, safety, and reliability are essential.

EBG ultra high power resistors are available in various power ranges, sizes, tight tolerances and ohm values to meet each customer’s specific requirements. Each series can be quickly and flexibly adapted to the customer’s specifications. Contact our technical team to discuss your optimal solution.

Useful Links

High Power Thick Film Resistors
All Resistors

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Ultra-Miniature DC-DC Supplies Optimal for Space-Critical HV Projects

Posted on 17/04/2023 by Dave McGuffog

Up to 600 V regulated output in less than a 13mm cube with the new AEQ Series.

PPM Power is excited to announce the release of a new series of Ultra-Miniature High Voltage DC-DC Converters from Advanced Energy. They are designed to offer power supply solutions for high-voltage applications, and are ideal for projects where space is a critical factor.

UltraVolt AEQ series miniature power supply

In less than a 13mm cube, the AEQ Series offers up to 600 VDC. Despite their small size, these power supplies are powerful and efficient. Their programmable input and 1500 V input-to-out isolation gives the user the best of both worlds – a source of precise, remotely programmable high voltage power, isolated to 1500 VDC, but with none of the drawbacks normally associated with proportional designs.

These new DC-DC converters are ideal for a wide range of applications, such as medical equipment and scientific instruments – especially hand-held and portable devices. With a compact size and high voltage capabilities, they are the ideal solution for any space-critical high-voltage project.

PPM Power continues to strive to meet our customers’ needs by providing them with the latest technology and solutions to achieve their goals. We are looking forward to working with our customers to explore how these DC-DC converters can enhance their projects.

Useful Links

High Voltage DC/DC Power Supplies
AEQ Series

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Meet the Power Electronics Experts at PCIM Europe

Posted on 12/04/2023 by accountcontrol@ppm.co.uk

Discover optimised power electronics components and solutions for your application this May from PPM Power.

PCIM Europe, the annual meeting place for the power electronics, intelligent motion, renewable energy and energy management industries from around the world, is taking place in Germany in May, bringing the industries together to explore the latest advancements in power electronics technology.

PCIM Europe conference

At the event you’ll get the opportunity to explore PPM Power’s expert power conversion solutions, and chat to the knowledgeable team about how to optimise your application. Their components and solutions are trusted across a wide variety of applications, providing unmatched performance and efficiency across the board.

Engineers, researchers, developers, and industry professionals alike are drawn to PCIM Europe each year to learn valuable insights from the technical sessions, make connections with industry experts and peers, and to stay up to date with the trends and developments within power electronics. It’s an event not to be missed by anyone in the field.

With unparalleled quality and reliability, a wide range of customisable solutions, and the expert support of the experienced team, you’ll discover why PPM Power is leading the market in power conversion components like inverter DC link capacitors, SiC converter test kits and HV pulsed capacitors.

PPM Power's Cygnus300 product to be displayed at PCIM

PPM’s Power Cygnus300 and Roadstar products which will be on display at PCIM

Whether you’re looking to power next-generation innovative renewable energy systems or medical devices, you want unparalleled performance, reliability, and efficiency. PPM Power’s commitment to innovation and quality solidifies them as a trusted partner in the power electronics industry, so stop by stand 418 to chat about your current application.

“The team are excited to be showcasing our power conversion solutions at PCIM Europe,” said Phil Surman, Sales Director at PPM Power. “We’re ready to engage with customers, partners and industry experts at the event and demonstrate how our products can help them achieve their goals.”

You can save 50% on your ticket for PCIM Europe this year, as PPM Power has secured you a unique code – simply enter PCIRBAUE33 when registering! PCIM Europe takes place this year in Nuremberg, Germany on May 9^th– 11^th.

Please contact us find out more.

Posted in Capacitors, High Voltage | Comments Off

DC and AC Contactors for Repeatable, Safe Switching

Posted on 10/03/2023 by Dave McGuffog

PPM Power is pleased to announce the availability of Schaltbau contactors that offer superior performance and reliability for a wide range of applications. These contactors have been designed to meet the demands of new mobility, new energy, industry, and railway applications.

Schaltbau C300 bidirectional DC contactor Schaltbau CL series contactors

The contactors are an ideal choice for demanding applications, providing repeatable, safe switching. They are designed with a high degree of flexibility, allowing them to be used in a wide variety of applications. Some of the benefits of these contactors include:

Robust design for long-term performance
High switching capacity for reliable operation
Low noise levels for quiet operation
Low power consumption for energy savings
Simple installation and maintenance for ease of use
Variety of control and connection options for customisation.

Reducing the risk of arc flash

With compact arc chambers, the contactors provide low contact resistance and reliability without the need for cumbersome gas encapsulation. This breakthrough technology is an industry first and provides users with a much more efficient and reliable contactor option, even in high power applications.

Schaltbau CT contactor diagram

High voltage relays

PPM Power is also offering the new R400 high voltage relays, for use in industrial applications. The R400 relays have been specially developed for use in test systems where they are required for testing electrical safety. The switching devices isolate all non-active components during the high-voltage and insulation test procedure.

Schaltbau R400 high voltage relay

Choosing the ideal contactor

The contactors can be selected based on parameters such as voltage, application and configuration. Visit the DC Breakers and Contactors page to easily compare the range or contact our technical team to find the ideal configuration for your application.

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Best DC Link Capacitor? Power Ring from Advanced Conversion

Posted on 06/03/2023 by Dave McGuffog

Power ring vs. conventional capacitor temperature graph

Advanced Conversion’s Power Ring capacitors have a high performance design that reduces losses and inductance, while increasing the ripple current rating compared to traditional film capacitor technology. The ring shape construction enables extremely low internal losses (ESR) and minimises the inductive properties (ESL). For example, a 1000 µF – 600 V DC link exhibits ESR values as low as 0.15 mΩ. This performance makes the Power Ring capacitors one of the best DC link capacitors on the market.

Power Ring, the best DC link capacitor Advanced Conversion best DC link capacitor graph form factor

How good is the thermal performance of a Power Ring?

The graph of temperature versus ripple current below illustrates the huge improvement in thermal performance delivered by the Power Ring design versus a conventional array of film capacitors. This performance improvement translates to a more efficient use of microfarads where high ripple current is an issue. Rather than adding capacitance until the capacitor bank can handle current to achieve the required life (which would result in increased cost and size), the design can be optimised for current handling instead.

Power ring vs. conventional capacitor temperature graph

Advanced Conversion can provide solutions using PEN HV film, which allows for higher operating temperatures up to 125 ⁰C.

The DC link capacitors are also designed with solid insulation, solving creepage and clearance issues typically found in high altitude and high voltage applications.

Using the Power Ring for a snubberless circuit design

A Power Ring DC link capacitor with integrated bus bar offers a loop inductance that can allow for a snubberless circuit design in some applications. Snubber capacitors get very hot since they are connected to the IGBT pins (often the hottest point other than under the die itself) and are almost never directly cooled due to the difficulty of connecting cooling plates. Their small size and poor cooling mean snubber capacitors are usually the weak link in the reliability chain for an inverter.

As usable operating voltage increases there can be a tendency to add a snubber to get every bit of safe operating voltage out of a system. The integrated Power Ring capacitor is a more effective method of reducing overshoot, and therefore increasing safe operating voltage, without compromising reliability or system lifetime.

Integrating DC link capacitor designs

Advanced Conversion integrated capacitor and busbar assemblies can be fully customised to match customer voltage, ripple current and mechanical requirements. The design capability is very broad with our project team working closely with customers to make sure the optimum solution is delivered.

APCS custom design process

In short…

A cooler DC link capacitor means a longer lifetime. A lower ESL means reduced overshoot and undershoot, which reduces stress. Removing the requirement for a snubber capacitor means lower costs, a smaller design and a longer lifetime.

Useful links

Power Ring capacitors
Capacitors from PPM Power
Technical Papers

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Easily Integrate HV Components with Ceramic Substrate Printing

Posted on 09/02/2023 by Dave McGuffog

Ceramic substrate printing is making it easier and faster to produce designs of compensated dividers or high voltage filter networks.

The fabrication of EBG resistors with extra passive components is now available to the design engineer. Custom value resistors can be printed onto the same ceramic substrates as other surface mount components.

The integration of other components with resistors on a single ceramic substrate eliminates the need to assemble multiple pieces, resulting in reduced production time and bill of materials. As an added benefit, the ceramic substrate also provides greater isolation for the resistors and other components.

Resistor Capacitor Circuit

To demonstrate the new capability, the below example shows a ceramic substrate, with resistors and surface mount capacitors. This resistor capacitor circuit was custom designed to fulfill the customer’s requirement of conserving space and simplifying manufacturing.

EBG resistor capacitor circuit

PPM Power’s technical experts can help with advice and optimised solutions based on your specific requirement. Get in touch today to find out more about ceramic substrate printing.

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