US6031739A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-stage, three-phase split boost converter with reduced total harmonic distortion
Assignee: TE Connectivity Solutions GmbH
•
Filing: 1998-08-12
•
Granted: 2000-02-29
•
Expires: 2018-08-12
Abstract
Abstract For use with a three-phase split boost converter having a primary stage with a primary rectifier and first and second primary boost switches coupled between an input and first and second outputs of the three-phase split boost converter, an auxiliary stage, method of reducing input current total harmonic distortion (THD) at the input of the three-phase split boost converter, and a three-phase split boost converter employing the auxiliary stage and method. In one embodiment, the auxiliary stage includes first, second and third auxiliary boost inductors coupled to corresponding phases of the input. The auxiliary stage also includes an auxiliary boost switch, interposed between the first, second and third auxiliary boost inductors and the first and second outputs of the split boost, that conducts to induce corresponding phase currents through the first, second and third auxiliary boost inductors thereby reducing input current THD at the input of the three-phase split boost converter.
Inventors
- 👤 Jin He
- 👤 Mark E. Jacobs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:06
CPC Classifications
H; H02; H02M; H02M1/00; H02M1/42; H02M1/4208; H02M1/4216; Y; Y02; Y02B; Y02B70/00; Y02B70/10
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
125 words
For use with a three-phase split boost converter having a primary stage, including a primary rectifier and first and second primary boost switches, coupled between an input and first and second outputs of said three-phase split boost converter, an auxiliary stage, comprising: first, second and third auxiliary boost inductors coupled to corresponding phases of said input; and an auxiliary boost switch, interposed between said first, second and third auxiliary boost inductors and said primary stage, that conducts during at least a portion of a conduction period of said first and second primary boost switches to induce corresponding phase currents through said first, second and third auxiliary boost inductors thereby reducing input current total harmonic distortion (THD) at said input of said three-phase split boost converter.
Claim 2
Dependent Claim
125 words
For use with a three-phase split boost converter having a primary stage, including a primary rectifier and first and second primary boost switches, coupled between an input and first and second outputs of said three-phase split boost converter, an auxiliary stage, comprising: first, second and third auxiliary boost inductors coupled to corresponding phases of said input; and an auxiliary boost switch, interposed between said first, second and third auxiliary boost inductors and said primary stage, that conducts during at least a portion of a conduction period of said first and second primary boost switches to induce corresponding phase currents through said first, second and third auxiliary boost inductors thereby reducing input current total harmonic distortion (THD) at said input of said three-phase split boost converter.
Claim 3
Dependent Claim
27 words
The auxiliary stage as recited in claim 1 wherein said auxiliary boost switch transitions to a conducting state concurrently with said first and second primary boost switches.
Claim 4
Dependent Claim
28 words
The auxiliary stage as recited in claim 1 further comprising an auxiliary rectifier coupled between said first, second and third auxiliary boost inductors and said auxiliary boost switch.
Claim 5
Dependent Claim
24 words
The auxiliary stage as recited in claim 1 further comprising an auxiliary boost diode coupled between said auxiliary boost switch and said second output.
Claim 6
Dependent Claim
16 words
The auxiliary stage as recited in claim 1 wherein said primary rectifier comprises a six-diode bridge.
Claim 7
Dependent Claim
22 words
The auxiliary stage as recited in claim 1 wherein said primary stage further comprises a primary boost inductor and primary boost diode.
Claim 8
Dependent Claim
19 words
The auxiliary stage as recited in claim 1 wherein said three-phase split boost converter further includes an input filter.
Claim 9
Dependent Claim
21 words
The auxiliary stage as recited in claim 1 further comprising an energy storage and filtering capacitor coupled across said primary rectifier.
Claim 10
Dependent Claim
144 words
For use with a three-phase split boost converter having a primary stage, including a primary rectifier and first and second primary boost switches, coupled between an input and first and second outputs of said three-phase split boost converter, a method of reducing input current total harmonic distortion (THD) at said input of said three-phase split boost converter, comprising: coupling first, second and third auxiliary boost inductors of an auxiliary stage to corresponding phases of said input; and interposing an auxiliary boost switch of said auxiliary stage between said first, second and third auxiliary boost inductors and said primary stage; and controlling said auxiliary boost switch to conduct during at least a portion of a conduction period of said first and second primary boost switches to induce corresponding phase currents through said first, second and third auxiliary boost inductors thereby reducing said input current THD.
Claim 11
Dependent Claim
144 words
For use with a three-phase split boost converter having a primary stage, including a primary rectifier and first and second primary boost switches, coupled between an input and first and second outputs of said three-phase split boost converter, a method of reducing input current total harmonic distortion (THD) at said input of said three-phase split boost converter, comprising: coupling first, second and third auxiliary boost inductors of an auxiliary stage to corresponding phases of said input; and interposing an auxiliary boost switch of said auxiliary stage between said first, second and third auxiliary boost inductors and said primary stage; and controlling said auxiliary boost switch to conduct during at least a portion of a conduction period of said first and second primary boost switches to induce corresponding phase currents through said first, second and third auxiliary boost inductors thereby reducing said input current THD.
Claim 12
Dependent Claim
29 words
The method as recited in claim 9 wherein said controlling comprises transitioning said auxiliary boost switch to a conducting state concurrently with said first and second primary boost switches.
Claim 13
Dependent Claim
31 words
The method as recited in claim 9 further comprising coupling an auxiliary rectifier of said auxiliary stage between said first, second and third auxiliary boost inductors and said auxiliary boost switch.
Claim 14
Dependent Claim
27 words
The method as recited in claim 9 further comprising coupling an auxiliary boost diode of said auxiliary stage between said auxiliary boost switch and said second output.
Claim 15
Dependent Claim
15 words
The method as recited in claim 9 wherein said primary rectifier comprises a six-diode bridge.
Claim 16
Dependent Claim
19 words
The method as recited in claim 9 further comprising filtering an input voltage of said three-phase split boost converter.
Claim 17
Dependent Claim
20 words
The method as recited in claim 9 further comprising coupling an energy storage and filtering capacitor across said primary rectifier.
Claim 18
Dependent Claim
147 words
A three-phase split boost converter having an input and first and second outputs, comprising: a primary stage, including a primary rectifier coupled to said input and first and second primary boost switches, coupled to said first and second outputs; an auxiliary stage, including: first, second and third auxiliary boost inductors coupled to corresponding phases of said input; and an auxiliary boost switch, interposed between said first, second and third auxiliary boost inductors and said primary stage, that conducts during at least a portion of a conduction period of said first and second primary boost switches to induce corresponding phase currents through said first, second and third auxiliary boost inductors thereby reducing input current total harmonic distortion (THD) at said input of said three-phase split boost converter; and a first and second output filters coupled across said first and second outputs, respectively, of said three-phase split boost converter.
Claim 19
Dependent Claim
147 words
A three-phase split boost converter having an input and first and second outputs, comprising: a primary stage, including a primary rectifier coupled to said input and first and second primary boost switches, coupled to said first and second outputs; an auxiliary stage, including: first, second and third auxiliary boost inductors coupled to corresponding phases of said input; and an auxiliary boost switch, interposed between said first, second and third auxiliary boost inductors and said primary stage, that conducts during at least a portion of a conduction period of said first and second primary boost switches to induce corresponding phase currents through said first, second and third auxiliary boost inductors thereby reducing input current total harmonic distortion (THD) at said input of said three-phase split boost converter; and a first and second output filters coupled across said first and second outputs, respectively, of said three-phase split boost converter.
Claim 20
Dependent Claim
29 words
The three-phase split boost converter as recited in claim 16 wherein said auxiliary boost switch transitions to a conducting state concurrently with said first and second primary boost switches.
Claim 21
Dependent Claim
34 words
The three-phase split boost converter as recited in claim 16 wherein said auxiliary stage further comprises an auxiliary rectifier coupled between said first, second and third auxiliary boost inductors and said auxiliary boost switch.
Claim 22
Dependent Claim
30 words
The three-phase split boost converter as recited in claim 16 wherein said auxiliary stage further comprises an auxiliary boost diode coupled between said auxiliary boost switch and said second output.
Claim 23
Dependent Claim
18 words
The three-phase split boost converter as recited in claim 16 wherein said primary rectifier comprises a six-diode bridge.
Claim 24
Dependent Claim
24 words
The three-phase split boost converter as recited in claim 16 wherein said primary stage further comprises a primary boost inductor and primary boost diode.
Claim 25
Dependent Claim
15 words
The three-phase split boost converter as recited in claim 16 further comprising an input filter.
Claim 26
Dependent Claim
23 words
The three-phase split boost converter as recited in claim 16 further comprising an energy storage and filtering capacitor coupled across said primary rectifier.
References Cited (Backward Citations)
US5446646A
Cited
US5414613A
Cited
US5506766A
Cited
US5654882A
Cited
US5764037A
Cited
US5793625A
Cited
US5886891A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-02-28 | 2003-08-30 | 2004-02-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-02-28 | 2007-08-30 | 2008-02-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-02-28 | 2011-08-30 | 2012-02-29 | $7700.00 | Window Closed / Lapsed |