Electric engine start system with active rectifier

Details Electric engine start system with active rectifier Electric engine start system with active rectifier

2006-03-07

2010-06-29

Ro, Bentsu (Department: 2837)

Electricity: motive power systems

Synchronous motor systems

Armature winding circuits

C318S811000

Reexamination Certificate

active

07746024

ABSTRACT:
A power converter includes a PWM active rectifier and controller that minimize harmonic ripple currents on the DC link during an engine start mode (first stage) in which power is provided to an AC starter motor. The PWM active rectifier and controller also minimize harmonic currents on AC input lines during a second stage (active filter mode). The power converter also includes a PWM inverter and corresponding inverter controller that controls the performance of the AC starter motor during the first stage based on mode selection input received. The power converter system further includes pre-charge circuitry that charges a DC link capacitor located within the power converter system to a desired level prior to providing the power converter system with AC power.

REFERENCES:
patent: 5218520 (1993-06-01), Rozman et al.
patent: 5585708 (1996-12-01), Richardson et al.
patent: 6084786 (2000-07-01), Rozman
patent: 6850426 (2005-02-01), Kojori et al.

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