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Multiple inverter system with low power bus ripples and method therefor

  • US 20040160201A1
  • Filed: 02/14/2003
  • Published: 08/19/2004
  • Est. Priority Date: 02/14/2003
  • Status: Active Grant
First Claim
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1. A multiple inverter system for a vehicle comprising:

  • an energy source;

    a capacitor coupled in parallel to said energy source;

    a first inverter coupled to said energy source and adapted to drive a first motor;

    a first controller having an output coupled to said first inverter for providing a first pulse width modulated signal thereto that is modulated in relation to a first clock signal;

    a second inverter coupled to said energy source and adapted to drive a second motor; and

    a second controller having an input for receiving a synchronization signal, and an output coupled to said second inverter for providing a second pulse width modulated signal thereto that is modulated in relation to a second clock signal, wherein said second controller uses said synchronization signal to generate said second clock signal having a predetermined relationship with respect to said first clock signal.

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