# US 12,003,194 B2 · Multilevel power converter circuit

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- Number: US 12,003,194 B2
- Document ID: US12003194B2
- Status: Granted
- Kind: B2
- Application number: 17/610,133
- Filed: 2019-05-09
- Published: 2022-07-14
- Granted: 2024-06-04
- Earliest claimed: 2019-05-09
- Assignees: Universidad De Talca
- Applicants: Universidad De Talca
- Inventors: Marco Esteban Rivera Abarca; Mohammad Ali Hosseinzadeh; Maryam Sarbanzadeh
- Web page: https://patentgrep.com/patent/US12003194B2

## CPC

- H02M 1/0077: {Plural converter units whose outputs are connected in series}
- H02M 7/537: using semiconductor devices only, e.g. single switched pulse inverters
- H02M 7/483: Converters with outputs that each can have more than two voltages levels
- H02M 7/4835: {comprising two or more cells, each including a switchable capacitor, the capacitors having a nominal charge voltage which corresponds to a given fraction of the input voltage, and the capacitors being selectively connected in series to determine the instantaneous output voltage}
- H02M 7/49: Combination of the output voltage waveforms of a plurality of converters
- H02M: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF (transformers H01F; dynamo-electric converters H02K47/00; controlling transformers, reactors or choke coils, control or regulation of electric motors, generators or dynamo-electric converters H02P)

## Abstract

The present invention relates, without being limited thereto, to the field of power electronics and non-linear control, and in particular to a topology structure of a multilevel power converter of the type of a cascaded bridge. The present invention provides a new configuration of power converter comprising a functional block and is composed of a low number of devices; five sources of DC voltage, nine semiconductor switches, and two semiconductor diodes. Where switches S1, S1 and S2, S2 are devices complementary to each other. On the other hand, switch S3 corresponds to a bidirectional switch. The present invention, in addition, presents a plurality of functional blocks connected in series, each of said functional blocks having the configuration of the circuit.

## Claims

### Claim 1

A multilevel power converter circuit characterized in that the multilevel power converter circuit comprises a circuit configuration shown in FIG. 10,
where V1, V2, V3, V4, V5 are sources of DC voltage;
where S1, S1, S2, S2, S3, T1, T1, T2, T2 are semiconductor switches; and
where D1 and D2 are two semiconductor diodes.

### Claim 2 (depends on 1)

The circuit according to claim 1, characterized in that the semiconductor switches S2, S1 and S2, S2 are devices complementary to each other.

### Claim 3 (depends on 1)

The circuit according to claim 1, characterized in that the semiconductor switch S3 corresponds to a semiconductor bidirectional switch.

### Claim 4 (depends on 1)

A circuit comprising a plurality of functional blocks having the configuration of circuit of claim 1 connected in series.

### Claim 5 (depends on 4)

The circuit according to claim 4, comprising two functional blocks connected in series and in that outputs of said functional blocks are asymmetrical with each other.