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US 9,438,099 B2Granted
Harmonic displacement reduction
OwnerFred O. Bartholdinventor
Life of this patent
Estimating the term…
Abstract
Reducing voltage excursions in a circuit comprises: performing resonant commutation, including transferring, via a first set of one or more diodes, energy stored by a set of one or more parasitic inductances to a set of one or more capacitors; and performing recovery-to-load, including discharging energy stored in the set of one or more capacitors via a second set of one or more diodes, through the set of one or more parasitic inductances to a load of the circuit.
Claims17
A method of reducing voltage excursions in a circuit comprising a converter portion and a harmonic displacement reduction (HDR) portion, the method comprising:
- performing resonant commutation to transfer, via a first set of one or more diodes included in the HDR portion, energy stored by a set of one or more parasitic inductances included in the converter portion to a set of one or more capacitors included in the HDR portion, including:
- causing a current to flow through at least some of the set of one or more parasitic inductances included in the converter portion;
- and
- stopping the current from flowing through the at least some of the set of one or more parasitic inductances included in the converter portion and redirecting the current to flow through at least some of the first set of one or more diodes included in the HDR portion to charge the set of one or more capacitors included in the HDR portion;
- and
- performing recovery-to-load, including:
- discharging the charged set of one or more capacitors via a second set of one or more diodes, thereby causing a current to flow through the second set of one or more diodes and energy to be inductively transferred to a load of the circuit.
4 more elements
A harmonic displacement reduction (HDR) circuit comprising:
- a set of one or more capacitors;
- a first set of one or more diodes coupled to the set of one or more capacitors, and
- a second set of one or more diodes coupled to a source;
- wherein:
- each of the set of one or more capacitors has a first lead that is coupled to one or more corresponding leads of one or more diodes in the first set of one or more diodes, and a second lead that is configured to be coupled to a corresponding lead of a corresponding switch included in a second circuit;
- each of the first set of one or more diodes has a first lead that is coupled to a corresponding lead of a corresponding one of the set of one or more capacitors, and a second lead that is coupled to a corresponding lead of another one of the first set of one or more diodes;
- each of the second set of one or more diodes has at least one lead that is coupled to a corresponding lead of a source of the second circuit and wherein
- the first set of one or more diodes, the set of one or more capacitors, and the second set of one or more diodes are configured to:
- perform resonant commutation to transfer, via the first set of one or more diodes, energy stored by a set of one or more parasitic inductances to the set of one or more capacitors, the set of one or more parasitic inductances being included in the second circuit, and to perform the resonant commutation including to:
- cause a current to flow through at least some of the set of one or more parasitic inductances included in the second circuit;
- and
- stop the current from flowing through the at least some of the set of one or more parasitic inductances included in the second circuit and redirect the current to flow through at least some of the first set of one or more diodes to charge the set of one or more capacitors;
- and
- perform recovery-to-load, including to:
- discharge the charged set of one or more capacitors via the second set of one or more diodes, thereby causing a current to flow through the second set of one or more diodes and energy to be inductively transferred to a load of the second circuit.
12 more elements
A power converter circuit, comprising:
- a converter portion comprising a set of one or more parasitic inductances and a source;
- and
- a harmonic displacement reduction (HDR) portion coupled to the converter portion, the HDR portion comprising a first set of one or more diodes, a second set of one or more diodes, and a set of one or more capacitors, wherein:
- each of the set of one or more capacitors has a first lead that is coupled to one or more corresponding leads of one or more diodes in the first set of one or more diodes, and a second lead that is configured to be coupled to a corresponding lead of a corresponding switch included in a second circuit;
- each of the first set of one or more diodes has a first lead that is coupled to a corresponding lead of a corresponding one of the set of one or more capacitors, and a second lead that is coupled to a corresponding lead of another one of the first set of one or more diodes;
- each of the second set of one or more diodes has at least one lead that is coupled to a corresponding lead of a source of the second circuit and wherein
- the HDR portion is configured to:
- perform resonant commutation to transfer, via the first set of one or more diodes, energy stored by the set of one or more parasitic inductances to the set of one or more capacitors, including to:
- cause a current to flow through at least some of the set of one or more parasitic inductances included in the converter portion;
- and
- stop the current from flowing through the at least some of the set of one or more parasitic inductances and redirect the current to flow through at least some of the first set of one or more diodes to charge the set of one or more capacitors;
- and
- perform recovery-to-load, including to:
- discharge the charged set of one or more capacitors via the second set of one or more diodes, thereby causing a current to flow through the second set of one or more diodes and energy to be inductively transferred to a load of the power converter circuit.
11 more elements
Dependencies are inferred from the claim text.