Rectifier assembly

Patent metadata

Field	Value
Publication number	US-11228255-B2
Application number	US-202016819827-A
Country	US
Kind code	B2
Filing date	Mar 16, 2020
Priority date	Mar 14, 2019
Publication date	Jan 18, 2022
Grant date	Jan 18, 2022

Abstract

A rectifier assembly (20) for rectifying an AC voltage into a DC voltage has at least one first terminal (21, 22, 23), a second terminal (24) and an intermediate circuit (50). The first terminal (21, 22, 23) is connected via a circuit (31, 32, 33) to a neutral point (40), and the second terminal (24) is connected to the neutral point (40). The circuit arrangement (31, 32, 33) has a first branch (81) and a second branch (82) connected in parallel with the first branch (81). Both branches (81, 82) comprise a changeover arrangement (92, 93) and a coil (91, 94) connected in series with the changeover arrangement. The coil (91) in the first branch (81) is on the side of the changeover arrangement (92) averted from the neutral point (40), and the coil (94) in the second branch (82) is on the side facing the neutral point (40).

First claim

What is claimed is:

1. A rectifier assembly ( 20 ) for the rectification of an AC voltage into a DC voltage,
which rectifier assembly ( 20 ) comprises at least one first terminal ( 21 , 22 , 23 ), a second terminal ( 24 ) and an intermediate circuit ( 50 ),
which intermediate circuit ( 50 ) comprises a first conductor ( 51 ), a second conductor ( 52 ) and at least one capacitor ( 61 , 62 ) between the first conductor ( 51 ) and the second conductor ( 52 ),
which at least one first terminal ( 21 , 22 , 23 ) is connected via an associated circuit arrangement ( 31 , 32 , 33 ) to a neutral point ( 40 ), and which second terminal ( 24 ) is likewise connected to the neutral point ( 40 ),
which circuit arrangement ( 31 , 32 , 33 ) comprises a first branch ( 81 ) and a second branch ( 82 ), which second branch ( 82 ) is connected in parallel with the first branch ( 81 ), which first branch ( 81 ) and second branch ( 82 ) respectively comprise a changeover arrangement ( 92 , 93 ) and a coil ( 91 , 94 ) connected in series with said changeover arrangement ( 92 , 93 ), which coil ( 91 ) in the first branch ( 81 ) is provided on the side of the changeover arrangement ( 92 ) which is averted from the neutral point ( 40 ), and which coil ( 94 ) in the second branch ( 82 ) is provided on the side of the changeover arrangement ( 93 ) which faces the neutral point ( 40 ),
which changeover arrangements ( 92 , 93 ) respectively comprise at least one controllable switch ( 110 ; 110 A, 110 B) and permit a current flow between the associated branch ( 81 , 82 ) and the intermediate circuit ( 50 ),
wherein, in a first state (Z 1 ) of the at least one controllable switch ( 110 ; 110 A, 110 B), a current flow between the first terminal ( 21 , 22 , 23 ) and the neutral point ( 40 ) via the changeover arrangement ( 92 , 93 ) is suppressed, and wherein, in a second state (Z 2 ) of the at least one controllable switch ( 110 ; 110 A, 110 B), a current flow between the first terminal ( 21 , 22 , 23 ) and the neutral point ( 40 ) via the changeover arrangement ( 92 , 93 ) is possible.

2. The rectifier assembly of claim 1 , wherein the at least one first terminal ( 21 , 22 , 23 ) comprises at least three first terminals ( 21 , 22 , 23 ) that are connected via the respectively associated circuit arrangement ( 31 , 32 , 33 ) to the neutral point ( 40 ).

3. The rectifier assembly of claim 1 , wherein the at least one first terminal ( 21 , 22 , 23 ) comprises at least two first terminals ( 21 , 22 , 23 ) that are connected via the respectively associated circuit arrangement ( 31 , 32 , 33 ) to the neutral point ( 40 ), and which at least two first terminals ( 21 , 22 , 23 ) are electrically interconnected.

4. The rectifier assembly of claim 1 , wherein the at least one first terminal ( 21 , 22 , 23 ) comprises a single first terminal ( 21 ).

5. The rectifier assembly ( 20 ) of claim 1 , further comprising a control device ( 99 ) configured to influence the at least one controllable switch ( 110 ; 110 A, 110 B).

6. The rectifier assembly ( 20 ) of claim 5 , wherein the control device ( 99 ) is configured for at least temporary pulsed actuation of the at least one controllable switch ( 110 ; 110 A, 110 B).

7. The rectifier assembly ( 20 ) of claim 5 , wherein the control device ( 99 ) is configured to simultaneously switch the at least one controllable switch ( 110 ; 110 A, 110 B) of the first branch ( 81 ) and the at least one controllable switch ( 110 ; 110 A, 110 B) of the second branch ( 82 ) of one of the least one first terminals ( 21 , 22 ), at least temporarily, to the first state.

8. The rectifier assembly ( 20 ) of claim 5 , wherein the control device ( 99 ) is configured, on one of the at least one first terminals ( 21 , 22 , 23 ), at least temporarily, to set the at least one controllable switch ( 110 ; 110 A, 110 B) of the first branch ( 81 ) to the first state (Z 1 ), and to set the at least one controllable switch ( 110 ; 110 A, 110 B) of the second branch ( 82 ) to the second state (Z 2 ), or vice versa.

9. The rectifier assembly of claim 1 , wherein at least one of the changeover arrangements ( 92 , 93 ) comprises a bridge rectifier ( 95 ) having two bridge rectifier terminals ( 102 , 103 ), a first output ( 96 ), a second output ( 97 ) and the at least one controllable switch ( 110 ; 110 A, 110 B), the bridge rectifier terminals ( 102 , 103 ) being connected to the associated branch ( 81 , 82 ), the first output ( 96 ) being connected to the first conductor ( 51 ), the second output ( 97 ) being connected to the second conductor ( 52 ), and the bridge rectifier ( 95 ) is configured:
in the first predefined state (Z 1 ) of the at least one controllable switch ( 110 ; 110 A, 110 B), to permit a current flow from at least one of the bridge rectifier terminals ( 102 , 113 ) to the first output ( 96 ), but to prevent a current flow from the first output ( 96 ) to the bridge rectifier terminals ( 102 , 113 ),
in the first predefined state (Z 1 ) of the at least one controllable switch ( 110 ; 110 A, 110 B), to permit a current flow from the second output ( 97 ) to at least one of the bridge rectifier terminals ( 102 , 113 ), but to prevent a current flow from the bridge rectifier terminals ( 102 , 113 ) to the second output ( 97 ),
in the first predefined state (Z 1 ) of the at least one controllable switch ( 110 ; 110 A, 110 B), to suppress a current flow between the two bridge rectifier terminals ( 102 , 103 ), and
in the second predefined state (Z 2 ) of the at least one controllable switch ( 110 ; 110 A, 110 B), to permit a current flow between the two bridge rectifier terminals ( 102 , 103 ), in at least one direction.

10. The rectifier assembly ( 20 ) of claim 9 , wherein the bridge rectifier terminals ( 102 , 113 ) are connected respectively via a first diode ( 103 , 111 ) to a first point ( 104 ), and connected via a second diode ( 106 , 112 ) to a second point ( 107 ), wherein the first point ( 104 ) is connected via a third diode ( 105 ) to the first output ( 96 ), and the second point ( 107 ) is connected via a fourth diode ( 108 ) to the second output ( 97 ).

11. The rectifier assembly ( 20 ) of claim 10 , wherein the at least one controllable switch ( 110 ; 110 A, 110 B) comprises a first controllable switch ( 110 ) that is connected between the first point ( 104 ) and the second point ( 107 ), and the first controllable switch ( 110 ) is non-conducting in the first state (Z 1 ) and is conducting in the second state (Z 2 ) such that, in the second state (Z 2 ), a connection is constituted between the first point ( 104 ) and the second point ( 107 ).

12. The rectifier assembly ( 20 ) of claim 11 , wherein the at least one controllable switch ( 110 ; 110 A, 110 B) comprises a second controllable switch ( 110 A) and a third controllable switch ( 110 B), the two bridge rectifier terminals ( 102 , 113 ) comprise a first bridge rectifier terminal ( 113 ) and a second bridge rectifier terminal ( 102 ), the second controllable switch ( 110 A) is connected between the first bridge rectifier terminal ( 113 ) and the first point ( 104 ), and the third controllable switch ( 110 B) is connected between the first bridge rectifier terminal ( 113 ) and the second point ( 107 ).

13. The rectifier assembly ( 20 ) of claim 12 , wherein the first bridge rectifier terminal ( 113 ) is the bridge rectifier terminal ( 113 ) that is assigned to the associated coil ( 91 , 93 ).

14. The rectifier assembly ( 20 ) of claim 12 , wherein the second bridge rectifier terminal ( 102 ) is the bridge rectifier

Assignees

• Porsche Ag
• Fraunhofer Ges Forschung

Inventors

• Spesser Daniel
• Pfizenmaier Tim
• Endres Stefan
• Sessler Christoph

Classifications

• H02J2105/37

  exchanging power with electric vehicles [EV] or with hybrid electric vehicles [HEV] · CPC title

• B60L53/18

  Cables specially adapted for charging electric vehicles · CPC title

• H02M7/217 Primary

  using semiconductor devices only · CPC title

• B60Y2300/91

  Battery charging · CPC title

• H02J7/02

  for charging batteries from AC mains by converters · CPC title