Fixing the DC-DC Converter

Porsche 914 EV Conversion

I cringe at the thought of having to send anything back to Electro Automotive for replacement or repair, so I took a chance and dissected the DC-DC converter to see if I could fix it. Here's the DC-DC converter taken out of its black aluminum case.

2007 130

Overflow crowd at DC plug-in conference

Plugs and Cars

And, when his interviewer referred to plug-in hybrids, he insisted that all-electrics be part of the conversation and the commercial vehicle mix. News of oil by the barrel and gas by the gallon reaching new highs had been dominating TV and print, so it was perhaps not surprising that the Google/Brookings Plug-in Electric Vehicle Conference saw overflow crowds.

2008 100

Sendyne module precisely measures DC current from 3 mA to 500 A over the automotive temperature range

Green Car Congress

Operating in the automotive temperature range of -40 °C to +125 °C, the module simultaneously measures bi-directional DC current through a 100 micro-Ohm resistive shunt, voltage and temperature at 4 points. Accuracy is defined as the cumulative effect of all possible sources of error, including offset, gain and stability of the built-in precision voltage reference. Sendyne has introduced the SFP100EVB, a turnkey module for precision measurement of current, voltage and temperature.

2013 69

"Spirit of DC" is in GroovyLand. aka Groveland, California, Friday, 23 January 2009

Spirit of DC - PHEV3A

Mr. Malloy will speak about the benefits of Biofuel and the environment and “EV Jerry” Asher will speak about electric vehicles and bring his “SPIRIT OF DC” Prius for the audience to experience. “EV He started last year on Earth Day leaving the National Mall in Washington D.C.

2009 46

Electric Cars: Yes We Will

Revenge of the Electric Car

Dateline: Washington, DC. The buzz is everywhere and completely electric in Washington DC this week. Case in point: we opened the paper on our arrival to see a full 1/4 page photo of this message greeting Obama from the sides of the train tracks on his big journey from Philadelphia to DC: Electric Cars: Yes We Can ! " And here in DC, you can’t stop hearing these phrases: green energy, green transportation, and green jobs to build them.

2009 116

"Spirit of DC" Taking on Las Vegas EVA, Monday Eve, 24 November 2008

Spirit of DC - PHEV3A

SEE below for December 2008 contents from Las Vegas EVA Watts Happening -- space that was reserved for Stan & Marianne, Bill and Amanda, Bill, Lloyd, Daniel, John, Michelle, et Las Vegas EVA'rs al for webblogging plus posting pixs of the "Spirit of DC" shining & showing on the 2nd level of the Texas Station Casino parking garage. After answering questions and handing out informational brochures, Jerry joined with LVEVA members to christen the Spirit of DC with the LVEVA logo.

2008 36

Transphorm and ON Semiconductor begin production of co-branded 600V GaN cascode transistors

Green Car Congress

At APEC 2015, ON Semiconductor and power conversion specialist Transphorm, building on their previously announced partnership to bring gallium nitride (GaN) based power solutions to market, introduced the co-branded NTP8G202N (TPH3202PS) and NTP8G206N (TPH3206PS) 600V GaN cascode transistors and a 240 W reference design that utilizes them. (A At this year’s show we’re excited to announce complete GaN-specific reference designs with ON Semiconductor.

2015 75

Reflections on Converting a 914 to an EV

Porsche 914 EV Conversion

I often refer people back to specific pages when they have questions about their own conversions. I'm not entirely sure why, but ElectroAuto shipped #2 gauge cable with the AC kit instead of the standard 2/0 gauge cable that came with the earlier 914 DC kit. It's acceleration at zero RPM was less than half the original ICE engine and half of that (at zero RPM) of the Advanced DC 9" motor in the 914 DC kit. If I had to do things over, I might seriously use the DC kit.

2008 100

First round of parts arrive

Honda S2000 EV Conversion

I'm going with an Advanced DC FB1-4001A. Here is picture of the motor with my hand as a reference for the size. Here is the motor controller again picture with my hand for size reference. I finally got some long awaited parts in this week.

2008 52

DENSO partners with and invests in FLOSFIA to develop next-gen gallium oxide power semiconductor devices for electrified vehicles

Green Car Congress

Ga 2 O 3 and demonstrated an 86% reduction in on-state loss compared to a SiC reference SBD. ?-Ga To use electric energy more efficiently, energy losses during the DC to AC conversion by the inverter must be reduced, and so DENSO is conducting R&D on low-loss power semiconductors.

2018 78

DAIHEN to supply wireless EV charging stations with WiTricity technology

Green Car Congress

DAIHEN will now use WiTricity’s DRIVE 11 wireless charging system—capable of delivering up to 11 kW of power at efficiencies of up to 94%—as the reference design for its own line of standards-compliant wireless chargers for battery electric and hybrid electric vehicles. WiTricity's DRIVE 11 reference design will accelerate DAIHEN’s product development and enable it to deliver highly efficient and interoperable wireless charging stations that meet global automotive standards.

2017 60

Silicon Mobility introduces new software library and app for optimizing EV, HEV efficiency, battery range and charging speed

Green Car Congress

It includes advanced functions for inverter, DC/DC converter and AC/DC charger systems control. OLEA LIB comes with building blocks available as reference models and target models for MATLAB Simulink, and tuned for best used of OLEA.

2017 78

Ideal Power, developer of new indirect power conversion technology, prices IPO

Green Car Congress

It also provides buck/boost voltage conversion, bi-directional power transfer, and multiport applications with any combination of independently-controlled AC and DC power ports. The goal of the partnership is to create standard reference designs using IPC’s patented topology in the 3-Port Hybrid Converter that can readily be adopted by commercial and municipal EV fleets, military installations, and public infrastructure. Ideal Power Inc.,

2013 72

Wuhan University team proposes structure-variable sliding mode control of IPMSM in EVs

Green Car Congress

In the electric vehicle driving system, the motor speed should closely follow a specified reference trajectory, regardless of any load disturbance, parameter variation, and model uncertainty. To consider the constraint of the battery capacity of the electric vehicles and to improve the utilization rate of the direct current (DC) bus voltage of the inverter, a kind of space vector pulse-width modulation (SVPWM) over-modulation method is adopted.

2018 74

Volkswagen Group talks EV charging standards, electrification strategy

Green Car Congress

One of approximately twenty VW Golf blue e-motion prototypes under test in the United States, with Eaton’s 50kW DC Quick Charger, at Volkswagen’s Electronics Research Laboratory, near San Francisco. The gathering marked the introduction of Eaton’s DC quick charger ( link ), one of which is now installed at ERL. public DC charging of up to 86 kW. DC charging” refers to a charging protocol in which a charging station supplies direct current to a plug-in vehicle’s battery pack.

2013 103

Building the heater

Honda S2000 EV Conversion

I'm not sure what my original temp would have been in the car but figured this was at least some reference point. In addition I'll be running the heater on 144v DC so it will actually get hotter than the AC test

2008 52

Continental puts first 48V hybrid assist system into production with Renault diesels

Green Car Congress

The electric motor transmits power via a belt drive directly to the crankshaft of the combustion engine—an arrangement referred to as “P0 topology.”

2016 97

WiTricity collaborating with Nissan on wireless charging for EVs

Green Car Congress

WiTricity’s DRIVE series of EV reference designs include 3.7 In addition, WiTricity’s DRIVE 11 offers direct-to-battery charging to eliminate system losses associated with DC-DC converters and onboard chargers and can be configured to handle a wide range of battery voltage including the latest 800V packs used for next-generation high performance EVs. WiTricity is collaborating with Nissan to further the adoption of wireless EV charging systems.

2017 60

Volkswagen unveils mid-size SUV plug-in diesel-electric hybrid concept at Detroit Show

Green Car Congress

A DC/DC converter supplies the vehicle’s electrical system with the 12V power it needs. This is referred to as “coasting.” Since the energy for driving the rear wheels is electrical rather than mechanical, this is referred to as “propshaft by wire”.

2013 122

Volkswagen Group planning to launch 6 or more plug-in hybrids from 2014; the role of the MQB in the Group’s electrification plans

Green Car Congress

He was careful to note that “launch” referred to the global launch dates for global product—i.e., DC/DC converter.

2013 111

Volkswagen, a partner in SLAM fast charging project, shows “Golden Test Device” at Hannover Messe

Green Car Congress

A further aim is to provide an internationally accepted testing reference for connecting electric vehicles to charging stations. SLAM’s mission includes setting up a fund-based research network of up to 600 fast-charging stations to collect basic data for the research and analysis of suitable charging infrastructures according to the CCS-DC standard (combined charging system).

2016 60

US Postal Service Awards ZAP EV Conversion Contract for LLV

Green Car Congress

Following completion the converted vehicle will undergo field trials in the Washington, DC metropolitan area later this year. 4399, entitled the American Electric Vehicle Manufacturing Act, has been referred to the Committee on Oversight and Government Reform. The United States Postal Service (USPS) has awarded electric vehicle provider ZAP an engineering contract for the design and development of an electric version of its Long Life Vehicle (LLV).

2010 77

MAEAA Web Links

Tony Karrer Delicious EVdriven

Largo Scooters :Stealth Hub ebike conversion kits Metric Mind :Siemens AC drive motors and controlers Nu-KarElectric Vehicles : Citicar and Comutacar Parts SD Scooters : Electric scooterparts {Returnto top of page} EV Component Manufacturers Analytic Systems: manufactureInverters, Chargers and DC Converters for mobile and Electric Vehicle applications AVT :"SuperMotor" 4QD : Controllersand indicators Advanced DC Motors : EV motors Adlee Powertronic Co.,

ARPA-E to award $30M to increase performance of solid ion conductors for batteries, fuel cells

Green Car Congress

Li-ion cells can provide 90% round-trip DC-DC efficiency at relevant rates); and (2) scalability across a wide range of power levels (i.e.,

2016 83

Volkswagen unveils 5-seat Atlas Cross Sport Concept plug-in hybrid with 26-mile AER; mild hybrid option

Green Car Congress

The 12-volt vehicle electrical system is supplied by a DC/DC converter. Because the energy for driving the rear wheels is transferred by wire and not mechanically, it is referred to as an electric propshaft.

2018 83

AC Kinetics to showcase next-generation motor control software at ARPA-E Summit; 10-40% reduction in energy consumption and improved performance

Green Car Congress

will introduce its next-generation motor control technology at the upcoming ARPA-E Energy Innovation Summit in Washington, D.C., Internal AC Kinetics testing used an AC induction motor coupled to a large inertia, following a modified EPA city traffic cycle.

2013 119

Mercedes unveils electric all-wheel drive Vision Mercedes-Maybach 6 show car; CCS charging up to 350 kW

Green Car Congress

Supporting DC charging based on the CCS standard, the system allows an impressive charging capacity of up to 350 kW. The classic circular instruments are combined with deep displays and act as a reference to the history of Mercedes-Benz.

2016 102

Berkeley Lab scientists unravel structural ambiguities in Li- and Mn-rich transition metal oxides; importance for high-energy Li-ion cathodes

Green Car Congress

The “phase” of a material refers to the arrangement of the atoms with respect to each other.

2015 95

Lotus and Harmon partner up to add sound to hybrids

Tony Karrer Delicious EVdriven

Until then, we can always program the ESS to make what Lotus refers to as "more futuristic sounds for electric vehicles [that] can be created using sampled sounds and generated waveforms."

2009 38

Volkswagen unveils electric, Level 5 autonomous I.D. VIZZION concept sedan

Green Car Congress

The power electronics convert the direct current (DC) stored in the battery into alternating current (AC). Artificial intelligence (AI) refers to programs capable of self-learning by using algorithms to recognize, evaluate and interpret patterns.

2018 102

GM launches Volt field quality assessment and service programs

Green Car Congress

Concurrent with upcoming deliveries of the Chevrolet Volt to dealerships in California, Connecticut (Tri-State Metro Area), Michigan, New Jersey, New York, Texas, and Washington, D.C., The center will maintain extended hours during the rollout, and will have a Volt on hand for reference, if need be. General Motors is rolling out the Volt In-Field Quality Assessment Program, which will run to the end of June, as General Motors concludes its production plant start-up phase.

2011 72

Audi e-tron premium electric SUV debuts; starting at $74,800 in US; delivery Q2 2019; reservations open

Green Car Congress

This creates what is referred to as a one-pedal feeling. The e-tron is engineered for both AC and DC charging via the widespread SAE J1772 and Combined Charging System (CCS) standards.

2018 100

Smart-grid project matches wind to electric cars | Green Tech - CNET News

Tony Karrer Delicious EVdriven

Along with other industry executives, IBMs Schurr spoke Wednesday morning about smart-grid technologies in Washington, D.C., Smart grid refers to a number of technologies aimed at gathering more data on the flow of electricity through the transmission grid.

Simon Fraser study finds PEV success not tied to awareness of public chargers; implications for policy makers

Green Car Congress

The researchers also recently presented their study to the National Academy of Sciences’ Transportation Research Board in Washington, DC. The survey questions specified these two relatively popular PEV models rather than refer to “electric vehicles” or “plug-in hybrid vehicles” more generally—we believe that reference to specific models would produce more reliable results.

2015 88

Volkswagen unveiling CrossBlue Coupé concept plug-in hybrid in Shanghai

Green Car Congress

A DC/DC converter supplies the body electrical system with the 12 Volt electrical power it requires. This is referred to as “coasting”. Since the energy for driving the rear wheels flows by wire and not mechanically, this is referred to as “propshaft by wire”.

2013 105

EPA draft assessment finds no widespread, systemic impacts to drinking water resources from fracking

Green Car Congress

Hydraulic fracturing fluids and any formation water returning to the surface are often referred to as produced water. US Environmental Protection Agency, Washington, DC, EPA/600/R-15/047, 2015.

2015 105

Freescale S12 MagniV Mixed-Signal MCUs supporting mid-class vehicle growth in China

Green Car Congress

S12 MagniV MCUs address this challenge by integrating an analog front end and MCU, providing a comprehensive single-chip solution for applications such as anti-pinch window lifts, instrument clusters and brushless DC motors. Freescale and Tongji University in Shanghai developed an anti-pinch window lift reference design, which demonstrates the capabilities of the S12 MagniV portfolio. Freescale’s S12 MagniV block diagram. Click to enlarge.

2013 72

DOE seeks to cut cost of Level 2 EV charging equipment in half in 3 years; $12M FOA

Green Car Congress

Given that AC Level 2 (L2) EVSE is expected to account for a large majority of residential and commercial EVSE (until standards for DC fast charging for commercial EVSE are established), this FOA addresses development of smart grid-capable L2 EVSE for residential and non-residential applications. Commercial grade EVSE refers to its materials, construction, performance, and enclosures that are UL-listed and meet NEMA certifications for outdoor use.

2011 92

EU investing >€3M in research into ultra-efficient aero engines; ULTIMATE project

Green Car Congress

Europe’s Strategic Research and Innovation Agenda (SRIA 2050) outlines a 75% reduction in aviation CO 2 emissions to year 2050 relative to a year 2000 reference.

2016 78

Oak Ridge researcher developing autonomous intelligent engines capable of real-time calibration based on driver behavior

Green Car Congress

Malikopoulos has recently begun a DOE-funded project on developing autonomous intelligent plug-in hybrid electric vehicles (PHEVs); he presented an early update at the recent DOE 2012 Annual Merit Review meetings in Washington, DC.

2012 107

Cross Coupé with TDI plug-in hybrid premieres in Geneva

Green Car Congress

Meanwhile, the 12 Volt electrical system is supplied with power via a DC/DC converter. This is referred to as ‘sailing’. Since the energy for the rear electric drive is by wire and does not flow mechanically, this is referred to as an ‘electric propshaft’.

2012 97

Volkswagen to produce XL1 diesel plug-in hybrid at Osnabrück; 261 mpg US

Green Car Congress

The body electrical system of the XL1 is supplied with the necessary 12 Volts via a DC/DC converter and a small auxiliary battery. This first body production stage is referred to as the “bodyshell frame”. The XL1. Click to enlarge.

2013 158

NRC approves rule to certify amended AP1000 reactor design; Chu: “an important milestone”

Green Car Congress

revisions to the electrical system (additional auxiliary transformer; change in direct current (dc) voltage). The NRC is currently reviewing six Combined License applications that reference the amended AP1000 design. If an applicant for a nuclear power plant license references a certified design, the applicant need not submit safety information for.

2011 75