US 11,539,304 B2Granted

Indirect matrix converter and rectifier module

AssigneeDelta Electronics, Inc.

InventorsKai-Wei Hu, Lei-Chung Hsing

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Abstract

An indirect matrix converter includes a rectifier module, an inverter module, and a control unit. The rectifier module includes three parallel-connected T-type bridge arms, and each T-type bridge arm includes a bidirectional switch and a power bridge arm. The power bridge arm includes a first switch and a second switch connected to the first switch in series. One end of the bidirectional switch is coupled to a first AC power source, and the other end thereof is coupled to a common contact between the first switch and the second switch. The control unit outputs a plurality of control signals to control the rectifier module and the inverter module, so that the first AC power source is converted into a second AC power source, or the second AC power source is converted into the first AC power source.

Claims18

Dependent claims

An indirect matrix converter, comprising:

a rectifier module coupled to a first AC power source and comprising:
a plurality of bidirectional switches, wherein each of the bidirectional switches has a first end and a second end, and the first end of each of the plurality of bidirectional switches is individually coupled to each phase of the first AC power source, and
a plurality of power bridge arms, wherein each of the plurality of power bridge arms comprises a first switch and a second switch, and one end of the second switch is mutually connected one end of the first switch in series to form a common node,
wherein the second end of each of the plurality of bidirectional switches is correspondly and separately connected to the common node of each of the plurality of power bridge arms;
and
wherein, in each of the plurality of power bridge arms, the other end of the first switch being a positive polarity end of a bus path and the other end of the second switch being a negative polarity end of the bus path,
an inverter module coupled to the bus path and a second AC power source, and
a control unit configured to output a plurality of control signals to control the rectifier module and the inverter module so that the first AC power source converted into the second AC power source through the rectifier module and the inverter module, or the second AC power source converted into the first AC power source through the inverter module and the rectifier module,
wherein a conversion of a voltage and a current between the first AC power source and the second AC power source are completed through one of the bidirectional switches, one of the power bridge arms correspondingly coupled to one of the bidirectional switches, and one of inverter bridge arms of the inverter module, and any phase of the first AC power source is directly connected to any phase of the second AC power source at any time through the indirect matrix converter, and
wherein the bidirectional switches are transistor components, and the transistor components have junction diode with unidirectional forward bias inside.

7 more elements

A rectifier module coupled to a first AC power source and a control unit, and the rectifier module comprising:

a plurality of bidirectional switches, wherein each of the bidirectional switches has a first end and a second end, and the first end of each of the plurality of bidirectional switches is individually coupled to each phase of the first AC power source, and
a plurality of power bridge arms, wherein each of the plurality of power bridge arms comprises a first switch and a second switch, and one end of the second switch is mutually connected one end of the first switch in series to form a common node,
wherein the second end of each of the plurality of bidirectional switches is correspondly and separately connected to the common node of each of the plurality of power bridge arms;
and
wherein, in each of the plurality of power bridge arms, the other end of the first switch being a positive polarity end of a bus path and the other end of the second switch being a negative polarity end of the bus path,
wherein the control unit is configured to output a plurality of control signals to control the bidirectional switches and the power bridge arms so that the first AC power source is converted into a DC power source through the bidirectional switches and the power bridge arms, or the DC power source is converted into the first AC power source through the power bridge arms and the bidirectional switches,
wherein when an AC current of the first AC power source is positive, a current path between the bidirectional switches and the positive polarity end is provided based on a DC current of the bus path being greater than zero, or the other current path between the bidirectional switches and the negative polarity end is provided based on the DC current of the bus path being less than zero,
wherein when the AC current of the first AC power source is negative, the other current path between the bidirectional switches and the negative polarity end is provided based on the DC current of the bus path being greater than zero, or the current path between the bidirectional switches and the positive polarity end is provided based on the DC current of the bus path being less than zero, and
wherein the bidirectional switches are transistor components, and the transistor components have junction diode with unidirectional forward bias inside.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/991,750Filed 12 Aug 2020
Priority: CN 201910801090.728 Aug 2019
Published: US 2021/0067052 A14 Mar 2021
Granted: 27 Dec 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

H02M 5/4585
Using semiconductor devices only: having a rectifier with controlled elements
H02M 5/293
Using devices of a triode or transistor type requiring continuous application of a control signal: using semiconductor devices only
H02M 7/219
Using semiconductor devices only: in a bridge configuration
H02M
Apparatus for conversion between ac and ac, between ac and dc, or