AC/DC converter using resonant network for high input power factor
First Claim
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1. An AC to DC converter comprising:
- (a) an input transformer for connection to a single phase, high frequency, sinusoidal wave form, AC voltage source, the transformer, in operation, providing a matching output voltage for, and isolating from, the AC voltage source,(b) a resonant network for converting the single phase, high frequency, sinusoidal wave form, AC voltage to a sinusoidal, high frequency bi-directional current output,(c) a current controller connected in parallel to the resonant network to receive the sinusoidal high frequency current output therefrom and provide the desired output current from the converter,(d) a diode rectifier connected in parallel with the current controller, and for converting the bi-directional current into a unidirectional current output, and(e) an output filter connected to the rectifier to provide an essentially ripple free, substantially constant voltage DC output.
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Abstract
An AC/DC converter is provided, suitable for use in an advanced single phase, sine wave voltage, high frequency power distribution system, such as that used on a 20 kHz Space Station Primary Electrical Power Distribution System. The converter comprises a transformer, a resonant network, a current controler, a diode rectifier and an output filter. The voltage source is converted into a sinusoidal current source. The output of this current source is rectified by the diode rectifier and is controlled by the current controller. The controlled rectified current is then filtered by the output filter to obtain a constant voltage across the load.
77 Citations
10 Claims
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1. An AC to DC converter comprising:
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(a) an input transformer for connection to a single phase, high frequency, sinusoidal wave form, AC voltage source, the transformer, in operation, providing a matching output voltage for, and isolating from, the AC voltage source, (b) a resonant network for converting the single phase, high frequency, sinusoidal wave form, AC voltage to a sinusoidal, high frequency bi-directional current output, (c) a current controller connected in parallel to the resonant network to receive the sinusoidal high frequency current output therefrom and provide the desired output current from the converter, (d) a diode rectifier connected in parallel with the current controller, and for converting the bi-directional current into a unidirectional current output, and (e) an output filter connected to the rectifier to provide an essentially ripple free, substantially constant voltage DC output. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification