Thread: Increased Whine from Hybrid Synergy Drive System
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Old 04-24-2007, 09:06 AM
SPL SPL is offline
Ridiculously Active Enthusiast
  
Real Name: Stanley Lipshitz
Location: Waterloo, ON
Hybrids: 2007 Toyota Camry Hybrid
Posts: 825
Default Re: Increased Whine from Hybrid Synergy Drive System
You embarrass me, guys. Anyway, I was basically remembering correctly. The more detailed answer is that:
  • MG1 uses a switching frequency of 1.25, 2.5, 5, or 10 kHz
  • MG2 uses a switching frequency of 1.25, 2.5, or 5 kHz (I don't think it ever spins as fast as MG1)
  • the dc-to-dc converter uses a switching frequency of 5 or 10 kHz
You'll find this information (and much more!) in the attached pages HV-42to49.pdf from the Repair Manual.

Stan
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File Type: pdf HV-42to49.pdf (48.2 KB, 36 views)
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