another new document for Prius... ENERGY

john1701a · 04-18-2005, 08:55 AM

<div class='quotetop'>QUOTE(Frank Hudon\";p=\"82134)</div>

Quote:

The electric steering is already in the new Corolla. Will it be the first with HSD?[/b]

Echo also has electric steering.

Camry will be the first already existing CAR (not a SUV) that offers HSD. It is scheduled to be available in 2006.

john1701a · 04-18-2005, 08:58 AM

<div class='quotetop'>QUOTE(Godiva\";p=\"82125)</div>

Quote:

Nice thing about the word doc is you can edit it.[/b]

Exactly. So if you don't agree with any particular wording, you can change to match your own needs.

DanMan32 · 04-18-2005, 03:40 PM

First, HV battery is totally disconnected unless in READY mode. If that were not so, it would be possible to jump start the car with the HV battery if the aux battery were dead. I can't explain your drain, but it isn't from the 12V system. You can see that the 12V system is 14V in Ready mode, but drops to 12V or less in any other mode.

The HID bulbs themselves are indeed 22K or so, but there is an electronic ballast to provide this with 12V. There is no high voltage connection between the HID and the inverter.

The inverter is still called the inverter. It contains, among other assemblies, a booster to bring the 206V to 500V for the MGs. The classic does not have a booster in its inverter, and the Ford hybrid system uses the classic technology. No booster there either. Both battery and motor I believe are 270V on those.

I am on a call at the moment, MG2 is rated 50KW. MG1 is not rated in NCF.

john1701a · 04-18-2005, 06:38 PM

What I would like to know is how the "booster" deals with a drop in voltage being fed to it... like when a module is taken offline by the computer when a malfunction is detected.

Does that simply mean a minor drop in efficiency due to the extra load needed to achieve the 500 volts?

And what happens to the other hybrids that don't have a "booster" available when a module goes bad? We know for a fact that the Classic runs just fine, but its uses AC. The Ford & Honda hybrids are DC. Does that make a difference?

DanMan32 · 04-19-2005, 08:29 AM

I am not sure what you are asking, but the booster is basically splitting the inverter into 3 inverters in one. One inverter goes to/from 206 to 500V, then the other 2 are to power or receive power from their respective MGs. The MGs take or charge from the 500V capacitor, and the 500V capacitor is kept in its voltage range by taking or adding from battery through an inductor, much as today's switching power supplies do in computers. They are very efficient, though not 100%.

04-18-2005, 06:38 PM	#34
john1701a Senior Member Join Date: Jan 2004 Location: Minnesota Posts: 2,715 My Car: 2004 Prius Package: Pioneer #3 Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 3	What I would like to know is how the "booster" deals with a drop in voltage being fed to it... like when a module is taken offline by the computer when a malfunction is detected. Does that simply mean a minor drop in efficiency due to the extra load needed to achieve the 500 volts? And what happens to the other hybrids that don't have a "booster" available when a module goes bad? We know for a fact that the Classic runs just fine, but its uses AC. The Ford & Honda hybrids are DC. Does that make a difference? __________________ JOHN http://john1701a.com 47.9 MPG average @ 108,544 miles

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04-18-2005, 03:40 PM	#33
DanMan32 Join Date: Aug 2004 Location: Tampa Bay, FL Posts: 3,775 My Car: Package: Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	First, HV battery is totally disconnected unless in READY mode. If that were not so, it would be possible to jump start the car with the HV battery if the aux battery were dead. I can't explain your drain, but it isn't from the 12V system. You can see that the 12V system is 14V in Ready mode, but drops to 12V or less in any other mode. The HID bulbs themselves are indeed 22K or so, but there is an electronic ballast to provide this with 12V. There is no high voltage connection between the HID and the inverter. The inverter is still called the inverter. It contains, among other assemblies, a booster to bring the 206V to 500V for the MGs. The classic does not have a booster in its inverter, and the Ford hybrid system uses the classic technology. No booster there either. Both battery and motor I believe are 270V on those. I am on a call at the moment, MG2 is rated 50KW. MG1 is not rated in NCF.

04-19-2005, 08:29 AM	#35
DanMan32 Join Date: Aug 2004 Location: Tampa Bay, FL Posts: 3,775 My Car: Package: Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	I am not sure what you are asking, but the booster is basically splitting the inverter into 3 inverters in one. One inverter goes to/from 206 to 500V, then the other 2 are to power or receive power from their respective MGs. The MGs take or charge from the 500V capacitor, and the 500V capacitor is kept in its voltage range by taking or adding from battery through an inductor, much as today's switching power supplies do in computers. They are very efficient, though not 100%.