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US 10,096,423 B2Granted
Electronic direct voltage transformer
OwnerVito Rinaldiinventor
Life of this patent
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Abstract
There is provided an electronic direct current transformer circuit configuration for transferring power from a source to a load using magnetic storage coupling, the circuit comprising: an input node adapted to receive an input alternating current power source having an input direct voltage waveform; the magnetic storage coupling unit comprising: a first set of windings coupled to a first switch, a second set of windings located in series with the first set of windings with; a second switch connected at one end between the first and second set of windings and at another end to a common ground or common connection, the first and second switches having a switching frequency in a kilohertz range and switching between on and off in alternating modes; and an output node connected to the second set of windings.
Claims22
An electronic direct voltage (DC) transformer circuit comprising:
- an input node adapted to receive input power from a direct voltage power source;
- a magnetic storage coupling unit comprising:
- a first set of windings coupled to a first bi-directional AC switch, the first bi-directional AC switch for receiving an input charging current associated with an input voltage;
- a second set of windings located in series with the first set of windings, the first and second set of winding sharing a common core;
- a second bi-directional AC switch connected at one end between the first and second set of windings and at another end to a common ground, the first and second bi-directional AC switches having a switching frequency in a kilohertz range and switching between on and off in alternating modes;
- and
- an output node connected to the second set of windings, the output node adapted to provide an output DC power, the output DC power having an output voltage with an amplitude based on the input voltage and a winding ratio of the first and second set of windings and a duty cycle of the first and second bi-directional AC switches;
- wherein the magnetic storage unit is configured to receive input power and transfer the input power between the input node to the output node such that the first set of windings and the second set of windings are configured to provide magnetic storage of energy based on each of the first and the second bi-directional AC switches being continuously switched.
5 more elements
An electronic direct voltage (DC) transformer circuit comprising:
- an input node adapted to receive input power from a direct voltage power source;
- a magnetic storage coupling unit comprising:
- a first set of windings coupled to a first bi-directional AC switch, the first bi-directional AC switch for receiving an input charging current associated with an input voltage;
- a second set of windings located in series with the first set of windings, the first and second set of winding sharing a common core;
- a second bi-directional AC switch connected at one end between the first and second set of windings and at another end to a common ground, the first and second bi-directional AC switches having a switching frequency in a kilohertz range and switching between on and off in alternating modes;
- and
- an output node connected to the second set of windings, the output node adapted to provide an output DC power, the output DC power having an output voltage with an amplitude based on the input voltage and at least one of:
- a winding ratio of the first and second set of windings, a polarity of the first and second set of windings and a duty cycle of the first and second bi-directional AC switches;
- wherein the magnetic storage unit is configured to receive input power and transfer the input power between the input node to the output node such that the first set of windings and the second set of windings are configured to provide magnetic storage of energy based on each of the first and the second bi-directional AC switches being continuously switched;
- wherein the input node is the source of power and an output load is a power absorber providing a near zero power harmonic distortion in both the input power and the output DC power with a fixed duty cycle wherein the switching frequency is greater than about 100 times the input frequency such that no harmonics are present below the kilohertz switching frequency.
7 more elements
An electronic direct voltage (DC) transformer circuit comprising:
- an input node adapted to receive input power from a direct voltage power source;
- a magnetic storage coupling unit comprising:
- a first set of windings coupled to a first bi-directional AC switch, the first bi-directional AC switch for receiving an input charging current associated with an input voltage;
- a second set of windings located in series with the first set of windings, the first and second set of winding sharing a common core;
- a second bi-directional AC switch connected at one end between the first and second set of windings and at another end to a common ground, the first and second bi-directional AC switches having a switching frequency in a kilohertz range and switching between on and off in alternating modes;
- and
- an output node connected to the second set of windings, the output node adapted to provide an output DC power, the output DC power having an output voltage with an amplitude based on the input voltage and at least one of:
- a winding ratio of the first and second set of windings, a polarity of the first and second set of windings and a duty cycle of the first and second bi-directional AC switches;
- wherein the magnetic storage unit is configured to receive input power and transfer the input power between the input node to the output node such that the first set of windings and the second set of windings are configured to provide magnetic storage of energy based on each of the first and the second bi-directional AC switches being continuously switched;
- wherein the input node is the source of power and an output load is a power absorber such that for a first duration where the first bi-directional AC switch is on and the second bi-directional switch is off, a current is permitted to flow from the first and second sets of windings to the load, the first and second sets of windings being magnetically charged for the first duration that the first bi-directional AC switch is closed and such that during a second duration where the second bi-directional AC switch is on and the first bi-directional switch is off, the current ceases to flow at the first set of windings and the current at the load point is maintained by the second set of windings as it magnetically discharges.
7 more elements
Dependencies are inferred from the claim text.