Input emi filter for motor drive including an active rectifier
AssigneeHamilton Sundstrand Corporation
InventorsGregory I. Rozman, Francis A. Carcia, Gabriel Ackerman
Life of this patent
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Abstract
A poly-phase motor drive includes an input EMI filter having a poly-phase filter input and a poly-phase filter output and an active rectifier connected to the filter output. The input EMI filter includes notch filters tuned at active rectifier and motor drive inverter switching frequencies and diverts common-mode current into DC bus. The active rectifier has a DC output. A motor drive inverter is connected to the DC output. The motor drive inverter has a poly-phase motor control output.
Claims15
A poly-phase motor drive comprising:
- an input filter having a poly-phase filter input and a poly-phase filter output;
- an active rectifier including a boost inductor, the active rectifier is connected to the filter output and has a DC output;
- and
- a motor drive inverter connected to the DC output, the motor drive inverter having a poly-phase motor control output.
A method for filtering a poly-phase motor drive comprising:
- filtering common mode noise at an input of an active rectifier;
- and
- filtering differential mode noise at an input of the active rectifier.
Dependencies are inferred from the claim text.