Controllers for regulated power inverters, AC/DC, and DC/DC converters
First Claim
1. A switching converter capable of converting a 3-phase AC source voltage into a DC output voltage and providing a DC power output, wherein said 3-phase AC source voltage is characterized by three AC voltages, wherein an AC voltage is one of said three AC voltages, wherein said DC output voltage is characterized by a DC common mode voltage, wherein said switching converter comprises a 3-phase bridge comprising three pairs of switches and capable of providing three switching voltages, wherein a switching voltage is provided by a pair of switches controlled by a controller providing a 1st control signal and a 2nd control signal, and wherein a 1st switch of said pair of switches is controlled by said 1st control signal and a 2nd switch of said pair of switches is controlled by said 2nd control signal, said switching converter further comprising a digital signal processing apparatus performing numerical functions including:
- a) a numerical integrator function operable to receive an integrator input and to produce an integrator output, wherein said integrator output is proportional to a numerical antiderivative of said integrator input;
b) a digital lowpass filter operable to receive a filter input and to produce a filter output;
c) a 1st numerical Schmitt trigger characterized by a hysteresis gap and a 1st reference level, and operable to receive a Schmitt trigger input and to produce said 1st control signal; and
d) a 2nd numerical Schmitt trigger characterized by said hysteresis gap and a 2nd reference level, and operable to receive said Schmitt trigger input and to produce said 2nd control signal;
wherein said integrator input comprises a sum of a 1-bit digital representation of said AC voltage and a 1-bit digital representation of a difference between said switching voltage and said DC common mode voltage, wherein said filter input comprises said integrator output, and wherein said Schmitt trigger input comprises said filter output.
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Abstract
The present invention relates to methods and corresponding apparatus for regulation, control, and management of DC-to-AC, AC-to-DC, and/or DC-to-DC switching power conversion.
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Citations
16 Claims
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1. A switching converter capable of converting a 3-phase AC source voltage into a DC output voltage and providing a DC power output, wherein said 3-phase AC source voltage is characterized by three AC voltages, wherein an AC voltage is one of said three AC voltages, wherein said DC output voltage is characterized by a DC common mode voltage, wherein said switching converter comprises a 3-phase bridge comprising three pairs of switches and capable of providing three switching voltages, wherein a switching voltage is provided by a pair of switches controlled by a controller providing a 1st control signal and a 2nd control signal, and wherein a 1st switch of said pair of switches is controlled by said 1st control signal and a 2nd switch of said pair of switches is controlled by said 2nd control signal, said switching converter further comprising a digital signal processing apparatus performing numerical functions including:
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a) a numerical integrator function operable to receive an integrator input and to produce an integrator output, wherein said integrator output is proportional to a numerical antiderivative of said integrator input; b) a digital lowpass filter operable to receive a filter input and to produce a filter output; c) a 1st numerical Schmitt trigger characterized by a hysteresis gap and a 1st reference level, and operable to receive a Schmitt trigger input and to produce said 1st control signal; and d) a 2nd numerical Schmitt trigger characterized by said hysteresis gap and a 2nd reference level, and operable to receive said Schmitt trigger input and to produce said 2nd control signal; wherein said integrator input comprises a sum of a 1-bit digital representation of said AC voltage and a 1-bit digital representation of a difference between said switching voltage and said DC common mode voltage, wherein said filter input comprises said integrator output, and wherein said Schmitt trigger input comprises said filter output. - View Dependent Claims (2, 3, 4)
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5. A switching converter capable of converting a DC source voltage into a 3-phase AC output voltage and providing an AC power output, wherein said 3-phase AC output voltage is characterized by three AC voltages indicative of respective AC setting voltages, wherein an AC voltage is one of said three AC voltages, wherein said DC source voltage is characterized by a DC common mode voltage, wherein said switching converter comprises a 3-phase bridge comprising three pairs of switches and capable of providing three switching voltages, wherein a switching voltage is provided by a pair of switches controlled by a controller providing a 1st control signal and a 2nd control signal, and wherein a 1st switch of said pair of switches is controlled by said 1st control signal and a 2nd switch of said pair of switches is controlled by said 2nd control signal, said switching converter further comprising a digital signal processing apparatus performing numerical functions including:
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a) a numerical integrator function operable to receive an integrator input and to produce an integrator output, wherein said integrator output is proportional to a numerical antiderivative of said integrator input; b) a digital lowpass filter operable to receive a filter input and to produce a filter output; c) a 1st numerical Schmitt trigger characterized by a hysteresis gap and a 1st reference level, and operable to receive a Schmitt trigger input and to produce said 1st control signal; and d) a 2nd numerical Schmitt trigger characterized by said hysteresis gap and a 2nd reference level, and operable to receive said Schmitt trigger input and to produce said 2nd control signal; wherein said integrator input comprises a sum of a 1-bit digital representation of said AC setting voltage and a 1-bit digital representation of a difference between said switching voltage and said DC common mode voltage, wherein said filter input comprises said integrator output, and wherein said Schmitt trigger input comprises said filter output. - View Dependent Claims (6, 7, 8)
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9. An AC/DC converter capable of converting an AC source voltage into a DC output voltage and providing a DC power output, wherein said DC output voltage is characterized by a DC common mode voltage, wherein said AC source voltage is characterized by two AC line voltages, wherein an AC voltage is one of said two AC line voltages, wherein said AC/DC converter comprises an H bridge comprising two pairs of switches and capable of providing two switching voltages, wherein a switching voltage is provided by a pair of switches controlled by a controller providing a 1st control signal and a 2nd control signal, and wherein a 1st switch of said pair of switches is controlled by said 1st control signal and a 2nd switch of said pair of switches is controlled by said 2nd control signal, said switching converter further comprising a digital signal processing apparatus performing numerical functions including:
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a) a numerical integrator function operable to receive an integrator input and to produce an integrator output, wherein said integrator output is proportional to a numerical antiderivative of said integrator input; b) a digital lowpass filter operable to receive a filter input and to produce a filter output; c) a 1st numerical Schmitt trigger characterized by a hysteresis gap and a 1st reference level, and operable to receive a Schmitt trigger input and to produce said 1st control signal; and d) a 2nd numerical Schmitt trigger characterized by said hysteresis gap and a 2nd reference level, and operable to receive said Schmitt trigger input and to produce said 2nd control signal; wherein said integrator input comprises a sum of a 1-bit digital representation of said AC voltage and a 1-bit digital representation of a difference between said switching voltage and said DC common mode voltage, wherein said filter input comprises said integrator output, and wherein said Schmitt trigger input comprises said filter output. - View Dependent Claims (10, 11, 12)
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13. A DC/AC converter capable of converting a DC source voltage into an AC output voltage and providing an AC power output, wherein said AC output voltage is characterized by two AC line voltages indicative of respective AC setting voltages, wherein an AC voltage is one of said two AC voltages, wherein said DC source voltage is characterized by a DC common mode voltage, wherein said DC/AC converter comprises an H bridge comprising two pairs of switches and capable of providing two switching voltages, wherein a switching voltage is provided by a pair of switches controlled by a controller providing a 1st control signal and a 2nd control signal, and wherein a 1st switch of said pair of switches is controlled by said 1st control signal and a 2nd switch of said pair of switches is controlled by said 2nd control signal, said switching converter further comprising a digital signal processing apparatus performing numerical functions including:
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a) a numerical integrator function operable to receive an integrator input and to produce an integrator output, wherein said integrator output is proportional to a numerical antiderivative of said integrator input; b) a digital lowpass filter operable to receive a filter input and to produce a filter output; c) a 1st numerical Schmitt trigger characterized by a hysteresis gap and a 1st reference level, and operable to receive a Schmitt trigger input and to produce said 1st control signal; and d) a 2nd numerical Schmitt trigger characterized by said hysteresis gap and a 2nd reference level, and operable to receive said Schmitt trigger input and to produce said 2nd control signal; wherein said integrator input comprises a sum of a 1-bit digital representation of said AC setting voltage and a 1-bit digital representation of a difference between said switching voltage and said DC common mode voltage, wherein said filter input comprises said integrator output, and wherein said Schmitt trigger input comprises said filter output. - View Dependent Claims (14, 15, 16)
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Specification