Electric power conversion systems – Current conversion – With means to introduce or eliminate frequency components
Patent
1994-10-04
1997-04-29
Krishnan, Aditya
Electric power conversion systems
Current conversion
With means to introduce or eliminate frequency components
H02M 5458
Patent
active
056255438
ABSTRACT:
An AC/DC harmonic neutralizing power converter. The power converter includes a first rectifier, load output terminals for delivering DC power to a load, and a harmonic neutralizing converter. The first rectifier includes an input to receive AC input power and an output. The harmonic neutralizing converter comprises a power switching inverter and a second rectifier. The power switching inverter includes an input connected to the output of the first rectifier, an LC resonant circuit comprising a series connected capacitor and inductor, and an output. The second rectifier of the harmonic neutralizing converter has an input connected to the output of the inverter and an output connected in voltage additive relationship to the output of the first rectifier. The added outputs of the rectifiers is connected to the load output terminals such that the output voltage on the load output terminals substantially equals the added output voltages of the rectifiers. In this manner, the power converter draws from the power source substantially sinusoidal current of a frequency substantially equal to the frequency of the input signal provided by the AC power source. Various disclosed embodiments include the use of a neutralizing autotransformer, an isolating transformer to provide for inductive coupling to a battery and full-bridge switching.
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Delco Electronics Corp.
Krishnan Aditya
Navarre Mark A.
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