阅读说明：本技术 一种多相整流可配置升压拓扑电路 (Multiphase rectification configurable boost topology circuit ) 是由 邹渊 张旭东 孙文景 董玉刚 孙逢春 于 2021-07-12 设计创作，主要内容包括：本发明涉及一种多相整流可配置升压拓扑电路,包括：多相半桥整流电路和电压变换器；所述多相半桥整流电路的输入端连接Y型连接的多相绕组输出,所述多相半桥整流电路包括多个并联的半桥,各所述半桥包括两个串联的整流二极管,各相绕组输出连接到对应各所述半桥的两个所述整流二极管中间,各相绕组输出与各所述半桥一一对应,各所述半桥并联的两端为所述多相半桥整流电路的输出端,所述多相半桥整流电路的输出端并联稳压电容；所述电压变换器的输入端连接所述多相半桥整流电路的输出端,所述电压变换器包括并联的多路升压电路。本发明实现了多相发电机的整流输出和多种高压等级的输出。(The invention relates to a multiphase rectification configurable boost topology circuit, which comprises: a multiphase half-bridge rectifier circuit and a voltage converter; the input end of the multiphase half-bridge rectifying circuit is connected with a multiphase winding output in Y-shaped connection, the multiphase half-bridge rectifying circuit comprises a plurality of half-bridges connected in parallel, each half-bridge comprises two rectifier diodes connected in series, each phase winding output is connected to the middle of the two rectifier diodes corresponding to each half-bridge, each phase winding output corresponds to each half-bridge one by one, the two parallel ends of each half-bridge are the output ends of the multiphase half-bridge rectifying circuit, and the output ends of the multiphase half-bridge rectifying circuit are connected with a voltage stabilizing capacitor in parallel; the input end of the voltage converter is connected with the output end of the multiphase half-bridge rectifying circuit, and the voltage converter comprises a plurality of paths of boosting circuits which are connected in parallel. The invention realizes the rectification output and the output of various high-voltage grades of the multiphase generator.)

1. A multiphase rectifying configurable boost topology circuit, comprising: a multiphase half-bridge rectifier circuit and a voltage converter;

the input end of the multiphase half-bridge rectifying circuit is connected with a multiphase winding output in Y-shaped connection, the multiphase half-bridge rectifying circuit comprises a plurality of half-bridges connected in parallel, each half-bridge comprises two rectifier diodes connected in series, each phase winding output is connected to the middle of the two rectifier diodes corresponding to each half-bridge, each phase winding output corresponds to each half-bridge one by one, the two parallel ends of each half-bridge are the output ends of the multiphase half-bridge rectifying circuit, and the output ends of the multiphase half-bridge rectifying circuit are connected with a voltage stabilizing capacitor in parallel;

the input end of the voltage converter is connected with the output end of the multiphase half-bridge rectifying circuit, and the voltage converter comprises a plurality of paths of boosting circuits which are connected in parallel.

2. The multiphase rectifying configurable boost topology circuit according to claim 1, further comprising a filter circuit, wherein an output end of each boost circuit is connected to a corresponding filter circuit.

3. The multiphase rectifying configurable boost topology circuit according to claim 1, wherein said multiphase winding is at least a 6-phase winding.

4. The multiphase rectifying configurable boost topology circuit according to claim 1, wherein said boost circuit comprises a boost circuit.

5. The multi-phase rectification configurable boost topology circuit according to claim 1, wherein the voltage converter adopts a full-bridge inverter circuit to convert direct current into alternating current, adopts a transformer to perform level conversion on the alternating current voltage of the direct current conversion, and adopts a full-bridge rectifier circuit to convert the alternating current voltage after the level conversion into direct current of a target voltage for output.

6. The multiphase rectifying configurable boost topology circuit according to claim 5, wherein said target voltages comprise 330V and 600V.

Technical Field

The invention relates to the field of circuit rectification and boosting, in particular to a multiphase rectification configurable boosting topology circuit.

Background

At present, because of the wide application of hybrid electric vehicles, an extended range unit (APU) composed of a highly integrated engine-generator set is increasingly gaining attention in the scheme of solving the endurance mileage. Due to the limitation of size, space and weight of a limited automobile, more and more APUs adopt a multi-phase low-voltage scheme (the number of phases is more than 6, the voltage is about 60 VAC), but the current general high-voltage grades of electric vehicles are 330VDC, 600VDC and the like, the multi-phase low-voltage APU cannot be directly connected with a bus, and different high-voltage grades can exist for some special vehicles.

Disclosure of Invention

The invention aims to provide a multiphase rectification configurable boost topology circuit, which realizes the rectification output and the output of multiple high-voltage grades of a multiphase generator.

In order to achieve the purpose, the invention provides the following scheme:

a multiphase rectifying configurable boost topology circuit comprising: a multiphase half-bridge rectifier circuit and a voltage converter;

the input end of the multiphase half-bridge rectifying circuit is connected with a multiphase winding output in Y-shaped connection, the multiphase half-bridge rectifying circuit comprises a plurality of half-bridges connected in parallel, each half-bridge comprises two rectifier diodes connected in series, each phase winding output is connected to the middle of the two rectifier diodes corresponding to each half-bridge, each phase winding output corresponds to each half-bridge one by one, the two parallel ends of each half-bridge are the output ends of the multiphase half-bridge rectifying circuit, and the output ends of the multiphase half-bridge rectifying circuit are connected with a voltage stabilizing capacitor in parallel;

the input end of the voltage converter is connected with the output end of the multiphase half-bridge rectifying circuit, and the voltage converter comprises a plurality of paths of boosting circuits which are connected in parallel.

Optionally, the multiphase rectification configurable boost topology circuit further includes a filter circuit, and an output end of each boost circuit is connected to a corresponding filter circuit.

Optionally, the multi-phase winding is at least a 6-phase winding.

Optionally, the boost circuit comprises a boost circuit.

Optionally, the voltage converter adopts a full-bridge inverter circuit to convert the direct current into alternating current, adopts a transformer to perform level conversion on the alternating current voltage subjected to the direct current conversion, and adopts a full-bridge rectifier circuit to convert the voltage subjected to the level conversion into direct current of a target voltage and then output the direct current.

Optionally, the target voltages include 330V and 600V.

According to the specific embodiment provided by the invention, the invention discloses the following technical effects:

the multiphase rectification configurable boost topological circuit comprises a multiphase half-bridge rectification circuit and a voltage converter, wherein the multiphase half-bridge rectification circuit realizes rectification of a multiphase winding generator, and boost at different levels is performed through a plurality of paths of boost circuits in the voltage converter, so that output at various high-voltage levels is realized, and the integration degree of the circuit is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.

Fig. 1 is a schematic diagram of a multiphase rectification configurable boost topology circuit according to a first embodiment of the present invention;

fig. 2 is a schematic diagram of a multiphase rectification configurable boost topology circuit according to a second embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention aims to provide a multiphase rectification configurable boost topology circuit, which realizes rectification and output of multiple high-voltage grades of a multiphase generator.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

Fig. 1 and 2 are schematic diagrams of a multiphase rectifying configurable boost topology, and as shown in fig. 1-2, a multiphase rectifying configurable boost topology includes: a multiphase half-bridge rectifier circuit 1 and a voltage converter 2.

The output of the heterogeneous winding that the Y type is connected to heterogeneous half-bridge rectifier circuit 1's input, heterogeneous half-bridge rectifier circuit 1 includes a plurality of parallelly connected half-bridges, each half-bridge includes the rectifier diode of two series connections, each phase winding output is to in the middle of two rectifier diodes corresponding to each half-bridge, each phase winding output and each half-bridge one-to-one, the parallelly connected both ends of each half-bridge are heterogeneous half-bridge rectifier circuit 1's output, the parallelly connected voltage-stabilizing capacitor of output of heterogeneous half-bridge rectifier circuit 1. The multi-phase winding is at least a 6-phase winding.

The input end of the multiphase half-bridge rectification circuit 1 of the invention is connected with the output of the Y-shaped connected 6-phase or more-phase generator. The multiphase high-frequency alternating current is converted into direct current through the topological structure of the multiphase half-bridge rectification circuit 1.

The input end of the voltage converter 2 is connected with the output end of the multiphase half-bridge rectification circuit 1, and the output end of the voltage converter 2 is high-voltage output with different grades.

The voltage converter 2 comprises a plurality of boost circuits connected in parallel.

The target voltages include 330V and 600V.

The voltage converter 2 may convert the direct current into an alternating current by using a full-bridge inverter circuit, perform level conversion on the alternating current voltage of the direct current conversion by using a transformer, and convert the voltage after the level conversion into a direct current of a target voltage by using a full-bridge rectifier circuit and then output the direct current.

As a specific embodiment, the voltage converter 2 includes a plurality of voltage boosting circuits and a plurality of voltage dropping circuits connected in parallel to meet the requirements of different levels of voltages.

The boost circuit also includes a boost circuit.

The expansion structure of the boost circuit is shown in fig. 1, after multiphase rectification, multiple paths of boost circuits can be connected in parallel according to different voltage levels and power requirements, and the topology of the boost circuit can be selected according to a voltage range, including but not limited to the topology shown in fig. 1.

The multiphase rectification configurable boost topology circuit further comprises filter circuits 3, and the output end of each boost circuit is connected with the corresponding filter circuit 3. The filter circuit 3 includes a filter capacitor. In fig. 1, Uout1, Uout2 and Uout3 are outputs of the multi-path booster circuit after filtering.

A filter circuit 3 is arranged after each booster circuit to improve the voltage and current quality.

The multiphase rectification configurable boost topology circuit has the following advantages:

1. the rectification of the multiphase generator is realized, the current general circuit topology does not exactly describe the rectification method of the generator higher than 6 phases, and the invention provides the simplest rectification topology scheme of the generator larger than 6 phases.

2. After rectification, the direct connection is in a boost topology, and the circuit integration level is high. The invention is different from the universal power generation system which is directly connected with energy storage equipment such as a battery and the like after rectification and then carries out voltage conversion, the invention directly carries out voltage grade conversion after rectification, has simple circuit, can be integrated in a generator controller in practical application, and has high integration degree.

3. The voltage utilization range of the multi-phase generator is greatly enlarged. For a multiphase generator, the generated voltage range has larger fluctuation due to larger variation of the rotating speed, and the voltage level possibly cannot directly meet the voltage level requirement of electric equipment.

4. The voltage is slightly influenced by the high-voltage bus and the control precision is higher, and the generated voltage is rectified and then is connected to the high-voltage bus or the generating equipment through the booster circuit, so that the high-precision regulation of the voltage can be realized through the high-precision control of the booster circuit.

5. The voltage classes can be configured, the topology of the invention can carry out multi-path boosting circuit parallel connection at the rectifying output end, can realize that one generator outputs high-voltage direct current with different classes, such as multiple voltage classes of 330V, 600V and the like, and can select different boosting topologies according to different voltage classes and power requirements.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.