How many inverters?

The Tramp · 03-28-2008, 02:34 PM

Reading this site

http://www.artsautomotive.com/PriusMG2.htm

I discover that the prius Classic has two inverters.

The MG1 motor temp was 152 deg. F
The MG2 motor temp was 320 deg. F (clearly too hot!)
The MG1 inverter temp was 107 deg. F
The MG2 inverter temp was 91 deg. F

Is this still true with the Prius THS II?

JimboK · 03-28-2008, 02:36 PM

bwilson4web · 03-28-2008, 03:12 PM

Perhaps a few more if you also count:

12 VDC supply (NHW11 and NHW20)
AC compressor supply (NHW20 models)

But we're getting into the weeds at this point. For motive power, both vehicles have two primary power inverters dedicated to MG1 and MG2.

Bob Wilson

ps. MG1 and MG2 inverters are bi-directional in that they can covert power back to battery voltage. Most inverters are one-way only. Now we're looking at the root nodules.

ken1784 · 03-28-2008, 11:31 PM

One more on NHW20.

201.6V to 500V step up converter

Ken@Japan

The Tramp · 03-29-2008, 04:38 AM

Quote:

Originally Posted by ken1784

One more on NHW20.

201.6V to 500V step up converter

Ken@Japan

Just to understand.....

Battery 202V DC <--> 500V step up converter <--> MGn Inverter <--> AC MGn

Am I correct?

ken1784 · 03-29-2008, 08:44 AM

HV battery
- DC-DC converter -> Aux battery
- DC-AC inverter --> A/C compressor
DC-DC step up converter
- DC-AC inverter --> MG1
- DC-AC inverter --> MG2

Ken@Japan

patsparks · 03-29-2008, 08:51 AM

Thanks for pointing me to that site, a lot of good stuff there.

The Tramp · 03-29-2008, 09:47 AM

Quote:

Originally Posted by ken1784

HV battery
- DC-DC converter -> Aux battery
- DC-AC inverter --> A/C compressor
DC-DC step up converter
- DC-AC inverter --> MG1
- DC-AC inverter --> MG2

Thanks Ken.

One last question: I thought tha the A/C Compressor was 500V. From your schema it looks like 200V

ken1784 · 03-29-2008, 10:17 AM

Hi Tramp,

The A/C compressor is driven by inverter from 201.6V line.
Please refer to page 3 on the following article.
http://www.autoshop101.com/forms/Hybrid18.pdf

Ken@Japan

03-28-2008, 02:34 PM	#1
The Tramp Italian Prius Expert Join Date: Jan 2006 Location: Turin, Italy Posts: 246 My Car: 2005 Prius Package: T Spirit Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 3	How many inverters? Reading this site http://www.artsautomotive.com/PriusMG2.htm I discover that the prius Classic has two inverters. The MG1 motor temp was 152 deg. F The MG2 motor temp was 320 deg. F (clearly too hot!) The MG1 inverter temp was 107 deg. F The MG2 inverter temp was 91 deg. F Is this still true with the Prius THS II?

03-28-2008, 02:36 PM	#2
JimboK One owner, low mileage Join Date: May 2006 Location: Chesterfield, VA Posts: 1,945 My Car: 2005 Prius Package: #2 Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 2	Re: How many inverters? Yes.

03-28-2008, 03:12 PM	#3
bwilson4web Senior Member Join Date: Nov 2005 Location: North Alabama Posts: 1,418 My Car: 2003 Prius Package: #1 Nominated 2 Times in 2 Posts TOTM Awards: 0 Friends: 5	Re: How many inverters? Perhaps a few more if you also count: 12 VDC supply (NHW11 and NHW20) AC compressor supply (NHW20 models) But we're getting into the weeds at this point. For motive power, both vehicles have two primary power inverters dedicated to MG1 and MG2. Bob Wilson ps. MG1 and MG2 inverters are bi-directional in that they can covert power back to battery voltage. Most inverters are one-way only. Now we're looking at the root nodules.

03-28-2008, 11:31 PM	#4
ken1784 SuperMID designer Join Date: Dec 2003 Location: Yokohama, JAPAN Posts: 1,308 My Car: 2004 Prius Package: G Touring Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 2	Re: How many inverters? One more on NHW20. 201.6V to 500V step up converter Ken@Japan

03-29-2008, 08:44 AM	#6
ken1784 SuperMID designer Join Date: Dec 2003 Location: Yokohama, JAPAN Posts: 1,308 My Car: 2004 Prius Package: G Touring Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 2	Re: How many inverters? HV battery - DC-DC converter -> Aux battery - DC-AC inverter --> A/C compressor DC-DC step up converter - DC-AC inverter --> MG1 - DC-AC inverter --> MG2 Ken@Japan

03-29-2008, 08:51 AM	#7
patsparks Uneducated bird-brain Aussie Join Date: Jul 2007 Location: Adelaide South Australia Posts: 4,539 My Car: 2004 Prius Package: Base Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 13	Re: How many inverters? Thanks for pointing me to that site, a lot of good stuff there.

03-29-2008, 10:17 AM	#9
ken1784 SuperMID designer Join Date: Dec 2003 Location: Yokohama, JAPAN Posts: 1,308 My Car: 2004 Prius Package: G Touring Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 2	Re: How many inverters? Hi Tramp, The A/C compressor is driven by inverter from 201.6V line. Please refer to page 3 on the following article. http://www.autoshop101.com/forms/Hybrid18.pdf Ken@Japan Last edited by ken1784; 03-29-2008 at 10:19 AM.