CN115694218A

CN115694218A - Full-wave rectifying circuit with multiple input sources and adjusting method thereof

Info

Publication number: CN115694218A
Application number: CN202211331483.4A
Authority: CN
Inventors: 杨益平; 陈怡�
Original assignee: Hangzhou Yunshi Iot Technology Co ltd
Current assignee: Hangzhou Yunshi Iot Technology Co ltd
Priority date: 2022-10-28
Filing date: 2022-10-28
Publication date: 2023-02-03

Abstract

The full-wave rectification circuit comprises at least 1 main power module, at least 1 slave power module and at least 1 additional module. The main power module and the auxiliary power module can independently complete electric energy conversion, the auxiliary module associates the main power module and the auxiliary power module to cooperatively work, and the composite structure enables the adjusting method of the whole circuit to be more diversified and increases the adjustability of the output characteristic of the whole circuit.

Description

Full-wave rectifying circuit with multiple input sources and adjusting method thereof

Technical Field

The present invention relates to a full-wave rectifier circuit, and more particularly, to a full-wave rectifier circuit with multiple input sources.

Background

The rectifier circuit is a circuit capable of converting Alternating Current (AC) into Direct Current (DC), and is widely applied to industries such as electric power, traffic, metallurgy, petroleum, chemical engineering and the like. The full-wave rectification circuit is a common rectification circuit and is mainly characterized in that: the secondary winding of the transformer needs a central tap to be led out, and the number of required rectifying devices is small.

With the development of new energy power generation technology, alternating current power supplies are diversified, and comprise wind power, photo-thermal, tide and hydrogen power generating sets and the like besides traditional thermal power, hydraulic power and nuclear power generating sets. The rectifying circuit with multiple input sources has the capability of comprehensively utilizing various alternating current power supplies. At present, most of common rectifying circuits with multiple input sources adopt a 'single-phase multiple' form. That is, the multi-input source rectifying circuit is composed of a plurality of identical and independent single-input source sub-rectifying circuits, and the input ends of the sub-rectifying circuits are independent, but the output ends of the sub-rectifying circuits are connected in parallel.

Disclosure of Invention

The single-phase multi-rectifier circuit has simple structure, each sub-rectifier circuit works independently, and only presents a simple decoupling working relation. However, the feature of "the sub-rectifier circuits are identical in structure and independent in operation" sacrifices the possibility that the sub-rectifier circuits cooperate with each other.

In order to overcome the defect that the sub-rectifying circuits in the conventional single-phase multiple rectifying circuit lack the cooperative work, the invention provides a full-wave rectifying circuit with multiple input sources, which also comprises an adjusting method, so that the performance of the full-wave rectifying circuit is further improved.

The full-wave rectification circuit of the multi-input source comprises a main power module, a slave power module and an additional module. Wherein the main power module comprises: two ports and middle taps of a secondary winding of the first transformer are respectively a first middle port, a second middle port and a third middle port of the main power module; the cathode of the first diode is connected with the first middle port of the main power module, and the anode of the first diode is used for being connected with the negative end of the direct current bus or the second end of the load; the cathode of the second diode is connected with the second middle port of the main power module, and the anode of the second diode is used for being connected with the negative end of the direct current bus or the second end of the load; and a series branch having a first inductor and a third diode, a current input terminal of which is connected to the third intermediate port of the main power module, and a current output terminal of which is adapted to be connected to the positive terminal of the dc bus or the first terminal of the load. The slave power module includes: two ports of a primary winding of the second transformer are used for being connected with a second alternating current power supply, and two ports and a middle tap of a secondary winding of the second transformer are respectively a first middle port, a second middle port and a third middle port of the secondary power module; a fourth diode, the cathode of which is connected with the first middle port of the slave power module, and the anode of which is used for being connected with the negative end of the direct current bus or the second end of the load; a fifth diode, the cathode of which is connected with the second middle port of the slave power module, and the anode of which is used for being connected with the negative end of the direct current bus or the second end of the load; and a series branch having a second inductor and a sixth diode, a current input terminal of the series branch being connected to the third intermediate port of the slave power module, and a current output terminal of the series branch being adapted to be connected to the positive terminal of the dc bus or the first terminal of the load. The additional module comprises at least one inductor and diode series branch, wherein: the current input end of the inductor and the diode are connected with the third middle port of the main power module, and the current output end of the inductor and the diode are connected with the first middle port or the second middle port of the slave power module; or, the inductor and the diode are connected in series with a branch circuit, a current input end of the branch circuit is connected with a first middle port or a second middle port of the master power module, and a current output end of the branch circuit is connected with a third middle port of the slave power module; or, the inductor and the diode are connected in series with each other, a current input end of the inductor and the diode is connected with the first intermediate port or the second intermediate port of the master power module, and a current output end of the inductor and the diode is connected with the first intermediate port or the second intermediate port of the slave power module.

The embodiment of the invention also provides a full-wave rectification circuit with multiple input sources, which comprises a main power module, a slave power module and an additional module. Wherein the main power module comprises: two ports and middle taps of a secondary winding of the first transformer are respectively a first middle port, a second middle port and a third middle port of the main power module; the anode of the first diode is connected with the first middle port of the main power module, and the cathode of the first diode is used for being connected with the positive end of the direct current bus or the first end of the load; the anode of the second diode is connected with the second middle port of the main power module, and the cathode of the second diode is used for being connected with the positive end of the direct current bus or the first end of the load; and a series branch having a first inductor and a third diode, a current output terminal of the series branch being connected to the third intermediate port of the main power module, and a current input terminal of the series branch being adapted to be connected to a negative terminal of the dc bus or to a second terminal of the load. The slave power module includes: two ports of a primary winding of the second transformer are used for being connected with a second alternating current power supply, and two ports and a middle tap of a secondary winding of the second transformer are respectively a first middle port, a second middle port and a third middle port of the secondary power module; the anode of the fourth diode is connected with the first middle port of the slave power module, and the cathode of the fourth diode is used for being connected with the positive end of the direct current bus or the first end of the load; the anode of the fifth diode is connected with the second middle port of the slave power module, and the cathode of the fifth diode is used for being connected with the positive end of the direct current bus or the first end of the load; and a series branch having a second inductor and a sixth diode, a current output terminal of which is connected to the third intermediate port of the slave power module, and a current input terminal of which is adapted to be connected to the negative terminal of the dc bus or to the second terminal of the load. The additional module comprises at least one inductor and diode series branch, wherein: the current input end of the inductor and the diode are connected with the first middle port or the second middle port of the master power module, and the current output end of the inductor and the diode are connected with the third middle port of the slave power module; or, the inductor and the diode are connected in series, a current input end of the inductor and the diode is connected with a third middle port of the master power module, and a current output end of the inductor and the diode is connected with a first middle port or a second middle port of the slave power module; or, the inductor and the diode are connected in series to form a branch, a current input end of the branch is connected with the first intermediate port or the second intermediate port of the master power module, and a current output end of the branch is connected with the first intermediate port or the second intermediate port of the slave power module.

The embodiment of the invention further provides a full-wave rectification circuit with multiple input sources, which comprises a master power module, a slave power module and an additional module. Wherein the main power module comprises: two ports and middle taps of a secondary winding of the first transformer are respectively a first middle port, a second middle port and a third middle port of the main power module; the anode of the first diode is connected with the first middle port of the main power module, and the cathode of the first diode is used for being connected with the positive end of the direct current bus or the first end of the load; the anode of the second diode is connected with the second middle port of the main power module, and the cathode of the second diode is used for being connected with the positive end of the direct current bus or the first end of the load; and a series branch having a first inductor and a third diode, a current output terminal of the series branch being connected to the third intermediate port of the main power module, and a current input terminal of the series branch being adapted to be connected to a negative terminal of the dc bus or to a second terminal of the load. The slave power module includes: two ports of a primary winding of the second transformer are used for being connected with a second alternating current power supply, and two ports and a middle tap of a secondary winding of the second transformer are respectively a first middle port, a second middle port and a third middle port of the secondary power module; a fourth diode, the cathode of which is connected with the first middle port of the slave power module, and the anode of which is used for being connected with the negative end of the direct current bus or the second end of the load; a fifth diode, the cathode of which is connected with the second middle port of the slave power module, and the anode of which is used for being connected with the negative end of the direct current bus or the second end of the load; and a series branch having a second inductor and a sixth diode, a current input terminal of which is connected to the third intermediate port of the slave power module, and a current output terminal of which is adapted to be connected to the positive terminal of the dc bus or the first terminal of the load. The additional module comprises at least one inductor and diode series branch, wherein: the current input end of the inductor and diode series branch is connected with the first middle port or the second middle port of the master power module, and the current output end of the inductor and diode series branch is connected with the first middle port or the second middle port of the slave power module; or, the inductor and the diode are connected in series with each other, a current input end of the inductor and the diode is connected with a third middle port of the master power module, and a current output end of the inductor and the diode is connected with a first middle port or a second middle port of the slave power module; or, the inductor and the diode are connected in series with a branch circuit, a current input end of the branch circuit is connected with the first middle port or the second middle port of the master power module, and a current output end of the branch circuit is connected with the third middle port of the slave power module.

The embodiment of the invention further provides a full-wave rectification circuit with multiple input sources, which comprises a main power module, a slave power module and an additional module. Wherein the main power module comprises: two ports and middle taps of a secondary winding of the first transformer are respectively a first middle port, a second middle port and a third middle port of the main power module; the cathode of the first diode is connected with the first middle port of the main power module, and the anode of the first diode is used for being connected with the negative end of the direct current bus or the second end of the load; the cathode of the second diode is connected with the second middle port of the main power module, and the anode of the second diode is used for being connected with the negative end of the direct current bus or the second end of the load; and a series branch having a first inductor and a third diode, a current input terminal of which is connected to the third intermediate port of the main power module, and a current output terminal of which is adapted to be connected to the positive terminal of the dc bus or the first terminal of the load. The slave power module includes: two ports of a primary winding of the second transformer are used for being connected with a second alternating current power supply, and two ports and a middle tap of a secondary winding of the second transformer are respectively a first middle port, a second middle port and a third middle port of the secondary power module; the anode of the fourth diode is connected with the first middle port of the slave power module, and the cathode of the fourth diode is used for being connected with the positive end of the direct current bus or the first end of the load; the anode of the fifth diode is connected with the second middle port of the slave power module, and the cathode of the fifth diode is used for being connected with the positive end of the direct current bus or the first end of the load; and a series branch having a second inductor and a sixth diode, a current output terminal of which is connected to the third intermediate port of the slave power module, and a current input terminal of which is adapted to be connected to the negative terminal of the dc bus or to the second terminal of the load. The additional module comprises at least one inductor and diode series branch, wherein: the current input end of the inductor and the diode are connected with the first middle port or the second middle port of the master power module, and the current output end of the inductor and the diode are connected with the first middle port or the second middle port of the slave power module; or, the inductor and the diode are connected in series with each other, a current input end of the inductor and the diode is connected with a third middle port of the master power module, and a current output end of the inductor and the diode is connected with a first middle port or a second middle port of the slave power module; or, the inductor and the diode are connected in series with a branch circuit, a current input end of the branch circuit is connected with the first middle port or the second middle port of the master power module, and a current output end of the branch circuit is connected with the third middle port of the slave power module.

Based on the above-described structure, there are various combinations of "1 master power module +1 slave power module +1 additional module", which is the most basic unit of the full-wave rectifier circuit of the multi-input source. On the basis of the most basic unit, a composite structure of a plurality of main power modules + a plurality of auxiliary power modules + a plurality of additional modules can be further realized, wherein the composite structure comprises a combination of 1 main power module connected with the plurality of additional modules, 1 auxiliary power module connected with the plurality of additional modules and different most basic units.

In some embodiments, some or all of the diodes in the aforementioned rectifying circuit may be replaced by controllable switching devices (e.g., synchronous rectifier MOSFETs). The alternating current power supply can be a multi-level alternating current power supply with three levels or more, including a sine alternating current power supply.

The embodiment of the invention also provides an adjusting method applicable to the rectifying circuit, which comprises the following steps of any combination:

step 0: changing the kind of the additional module;

step 1: increasing or decreasing the number of additional modules;

step 2: increasing or decreasing the number of series branches of the internal inductor and the diode of the additional module;

and step 3: changing the inductance value of the internal inductor of the additional module;

and 4, step 4: changing an operating parameter, such as amplitude, frequency, period, phase, level value, pulse width, etc., of a first ac power source connected to the main power module;

and 5: the operating parameters, such as amplitude, frequency, period, phase, level value, pulse width, etc., of the second ac power source connected to the slave power module are changed.

The invention has the following beneficial effects: compared with the existing single-phase multiple full-wave rectification circuit, the multi-input-source full-wave rectification circuit comprises a master power module, a slave power module and an additional module, wherein the master power module and the slave power module can independently complete electric energy conversion, and the additional module associates the master power module and the slave power module to enable current to flow between the master power module and the slave power module. The structure enables the adjusting means of the whole circuit to be more diversified, namely, the output characteristic of the whole circuit can be adjusted by changing the type and the number of the additional modules, the number of the internal inductors and the diode series branches of the additional modules and the working parameters of the alternating current power supply, and the adjustability of the whole circuit is improved.

Drawings

Fig. 1 is a circuit diagram of embodiment 1 of the present invention.

Fig. 2 is an output power characteristic diagram of embodiment 1 of the present invention.

Fig. 3 is a circuit diagram of embodiment 2 of the present invention.

Fig. 4 is an output power characteristic diagram of embodiment 2 of the present invention.

Fig. 5 is an output current ripple characteristic diagram of embodiment 2 of the present invention.

Fig. 6 is a circuit diagram of embodiment 3 of the present invention.

Fig. 7 is an output power characteristic diagram of embodiment 3 of the present invention.

Fig. 8 is an output current ripple characteristic diagram of embodiment 3 of the present invention.

Detailed Description

The invention is further described below with reference to the accompanying drawings. It should be noted that the embodiments described herein are only for illustration and are not intended to limit the invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be understood by those of ordinary skill in the art that these specific details are not required in order to practice the present invention. Furthermore, in some embodiments, well-known circuits, materials, or methods have not been described in detail in order to avoid obscuring the present invention.

Throughout the specification, reference to "one embodiment," "an embodiment," "one example," or "an example" means: the particular features, structures, or characteristics described in connection with the embodiment or example are included in at least one embodiment of the invention. Thus, the appearances of the phrases "in one embodiment," "in an embodiment," "one example" or "an example" in various places throughout this specification are not necessarily all referring to the same embodiment or example. Furthermore, the particular features, structures, or characteristics may be combined in any suitable combination and/or sub-combination in one or more embodiments or examples. Further, those of ordinary skill in the art will appreciate that the figures provided herein are for illustrative purposes, and wherein like reference numerals refer to like elements throughout. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may be present.

Example 1

Referring to fig. 1, a multi-input source full wave rectifier circuit includes at least 1 master power module, at least 1 slave power module, and at least 1 additional module. In some embodiments, the rectifier circuit includes a plurality of master power modules, a plurality of slave power modules, and a plurality of additional modules, and the master power modules, the slave power modules, and the additional modules may have the same structure or different structures, respectively.

Wherein, 1 master power module is M1,1 slave power module is S1, and 1 additional module is J1. The rectifying circuit has a first AC power supply v connected thereto _AC1 Is connected to a second alternating current power supply v _ac1 And an output port connected to a dc bus or load.

The main power module M1 comprises a transformer T _1A Inductor L _1A Diode D _1A Diode D _1B And a diode D _1C . Transformer T _1A Two ports of primary winding and AC power supply v _AC1 2 ports and intermediate taps of the secondary windings are respectively a first intermediate port 1_A, a second intermediate port 1_B and a third intermediate port 1_C; diode D _1A The cathode of the anode is connected with a first middle port 1_A, and the anode of the anode is connected with a negative end V of a direct current bus _o ^- Or a second end of the load; diode D _1B The cathode of the anode is connected with a second middle port 1_B, and the anode of the anode is connected with a negative end V of a direct current bus _o ^- Or a second end of the load; inductor L _1A Is connected with the third intermediate port 1_C, and an inductor L _1A Another terminal of (1) and a diode D _1C Is connected to the anode of diode D _1C Cathode and positive end V of direct current bus _o ⁺ Or of the loadOne end is connected.

The slave power module S1 comprises a transformer T _1a Inductor L _1a Diode D _1a Diode D _1b And a diode D _1c . Transformer T _1a Two ports of primary winding and AC power supply v _ac1 2 ports and intermediate taps of the secondary windings are respectively a first intermediate port 1_a, a second intermediate port 1_b and a third intermediate port 1_c; diode D _1a The cathode of the anode is connected with a first middle port 1_a, and the anode of the anode is connected with a negative end V of a direct current bus _o ^- Or a second end of the load; diode D _1b The cathode of the anode is connected with a second middle port 1_b, and the anode of the anode is connected with a negative end V of a direct current bus _o ^- Or a second end of the load; inductor L _1a Is connected with the third intermediate port 1_c, and an inductor L _1a Another terminal of (1) and a diode D _1c Is connected to the anode of a diode D _1c Cathode and positive end V of direct current bus _o ⁺ Or the first end of the load.

The additional module J1 internally comprises 2 series branches of inductors and diodes. First inductor and diode series branch routing inductor L _a1 And a diode D _a1 Formed by series connection of an inductor L _a1 Is connected with a third intermediate port 1_C of the main power module M1, and an inductor L _a1 Another terminal of (1) and a diode D _a1 Is connected to the anode of a diode D _a1 Is connected to the first intermediate port 1_a of the slave power module S1; second inductor and diode series branch routing inductor L _b1 And a diode D _b1 Formed by series connection of an inductor L _b1 One end of the first and second inductors is connected with a third intermediate port 1_C of the main power module M1, and an inductor L _b1 Another terminal of (1) and a diode D _b1 Is connected to the anode of a diode D _b1 Is connected to the second intermediate port 1_b of the slave power module S1. In addition to defining the direction of current flow, the diodes in J1 also act to prevent circulating currents when the number of series branches of inductors and diodes is greater than 1. The number of series branches of the inductor and the diode in the J1 can be changed, and the change range is 0 to 2.

For ease of understanding, fig. 1 shows only a portion of the entire multi-input source full-wave rectifier circuit — master power module M1, slave power module S1, and additional module J1. Taking the part shown in fig. 1 as an example, the steady-state operation process of the cooperative work of the master/slave power module and the additional module is mainly described. When the master/slave power modules work independently, the work processes are typical full-wave rectification work processes, and therefore, the details are not described.

For simplicity, it is assumed that the master power module M1 and the slave power module S1 employ the same components, the transformer T _1A The first port of the primary winding (e.g. to an AC power source v) _AC1 Positive terminal) and its secondary winding port 1_A are in end-to-end relationship, transformer T _1a The first port of the primary winding (e.g. connected to an AC power source v) _ac1 Positive terminal) and its secondary winding port 1_a are homonymous terminal relationship, take T _1A Taking the middle tap of the secondary winding as the center tap, and taking T _1a The middle tap of the secondary winding is a center tap; AC power supply v _AC1 Is a three-level AC power supply (+ V) _AC1 、0、-V _AC1 ) Ac power supply v _ac1 ＝A·v _AC1 (A is a constant), i.e. v _AC1 And v _ac1 The frequency, period, phase, pulse width are all the same, but the amplitude or level values are different. By 0<A<1 is an example and will be described. One working period T of the circuit shown in FIG. 1 ₁ There are 4 stages, and a typical operating condition is as follows:

(1) Stage 1: v. of _AC1 ＝+V _AC1

In the main power module M1: d _1B And D _1C On, D _1A Cut-off, (a) v _AC1 Warp beam T _1A And L _1A 、D _1C DC bus or load, D _1B Forming a 1 st loop;

from the power module S1: d _1c On, D _1a And D _1b Cutting off;

in the additional module J1: d _b1 Conducting, (b) v _AC1 Warp beam T _1A 、v _ac1 Warp beam T _1a And L _b1 、D _b1 、L _1a 、D _1c DC bus or load, D _1B Forming a 2 nd loop; (c) D _a1 Conduction ofUp to v _AC1 Warp beam T _1A 、v _ac1 Warp beam T _1a And L _a1 、D _a1 、L _1a 、D _1c DC bus or load, D _1B Current i in the 3 rd loop _a1 Is zero.

(2) And (2) stage: v. of _AC1 ＝0

At this time, T _1A And T _1a All the secondary sides of (a) are equivalent to short circuits;

in the main power module M1: d _1A And D _1B Conducting, (a) D _1C Is conducted until L _1A 、D _1C DC bus or load, D _1A 、D _1B Current i in loop 1 _D1C Is zero, during a period of D _1A And D _1B Share in common i _D1C ；

From the power module S1: d _1c On, D _1a And D _1b Cutting off;

in the additional module J1: d _b1 On, D _a1 Cut-off, (b) L _b1 、D _b1 、L _1a 、D _1c DC bus or load, D _1A 、D _1B Form the 2 nd loop during which the time period is D _1A And D _1B Sharing the current i of the second inductor and the diode series branch _b1 。

(3) And (3) stage: v. of _AC1 ＝-V _AC1

In the main power module M1: d _1A And D _1C On, D _1B Cut-off, (a) v _AC1 Warp beam T _1A And L _1A 、D _1C DC bus or load, D _1A Forming a 1 st loop;

from the power module S1: d _1c On, D _1a And D _1b Cutting off;

in the additional module J1: d _a1 Conducting, (b) v _AC1 Warp beam T _1A 、v _ac1 Warp beam T _1a And L _a1 、D _a1 、L _1a 、D _1c DC bus or load, D _1A Forming a 2 nd loop; (c) D _b1 Is conducted until v _AC1 Warp beam T _1A 、v _ac1 Warp beam T _1a And L _b1 、D _b1 、L _1a 、D _1c DC bus or load, D _1A Current i in the 3 rd loop _b1 Is zero.

(4) And (2) stage: v. of _AC1 ＝0

From the power module S1: d _1c On, D _1a And D _1b Cutting off;

in the additional module J1: d _a1 On, D _b1 Cut-off, (b) L _a1 、D _a1 、L _1a 、D _1c DC bus or load, D _1A 、D _1B Form the 2 nd loop during which the time period is D _1A And D _1B Sharing the first inductor and the diode series branch current i _a1 。

It can be seen from the above working process that when the master power module M1, the slave power module S1 and the additional module J1 work cooperatively, the electric energy of 2 ac power sources is jointly converted and then supplied to the dc bus or the load.

The working process of the J1 with the number of the series branches of the inductor and the diode being 1 is similar to that described above, and is not described again. To facilitate understanding of the effect of the additional module J1 on the output characteristics (mainly the output power) of the full-wave rectifier circuit of the overall multi-input source, assume that: v _AC1 ＝20V，v _AC1 Period T of ₁ ＝90μs，v _AC1 Is + V _AC1 Pulse width of T ₁ /4，v _AC1 Of (a) to (V) _AC1 Pulse width also T ₁ /4，T _1A And T _1a The original secondary turn ratio is 1 _o =20V. Take 3 cases for further explanation. Case 1: a =05; case 2: a =0.75; case 3: a =1.

Get L _a1 ＝L _b1 ＝L _1A ＝L _1a =300 muh, fig. 2 shows an output power behavior of example 1 of the present invention in the above 3 cases. As can be seen from fig. 2, (i) the presence and absence of the additional module J1 (the absence corresponds to the case where the number of its internal inductors and diode series branches is 0) has an influence on the output power of embodiment 1; (ii) When the additional module J1 exists, the internal inductance and the number of serial branches of the diodes have influence on the output power of the embodiment 1; (iii) AC power supply v _AC1 And v _ac1 The amplitude difference or level difference of (a) also has an influence on the output power of embodiment 1.

In addition, the inductance of the internal inductor of the additional module J1 also has an influence on the output characteristics (including output power and output current ripple) of the full-wave rectifier circuit of the whole multi-input source.

With the above features, the adjustment method of embodiment 1 is applicable, including any combination of the following steps:

step 1: increasing or decreasing the number of additional modules J1 (0 to 1);

step 2: increasing or decreasing the number of additional module internal inductance and diode series branches (0 to 2);

step 3: changing the inductance (L) of the inductance inside the add-on module _a1 And/or L _b1 )；

Step 4: varying the AC power supply v connected to the main power module M1 _AC1 Magnitude or level value (V) _AC1 )；

Step 5: varying the AC power supply v connected to the slave power module S1 _ac1 Amplitude or level value (A V) _AC1 )。

Example 2

Referring to fig. 3, a multi-input source full wave rectifier circuit includes at least 1 master power module, at least 1 slave power module, and at least 1 additional module. Wherein, 1 master power module is M1,1 slave power module is S1, and 1 additional module is J1.

The main power module M1 comprises a transformer T _2A Inductor L _2A Two polesPipe D _2A Diode D _2B And a diode D _2C . Transformer T _2A 2 ports of primary winding and AC power supply v _AC1 2 ports and intermediate taps of the secondary windings are respectively a first intermediate port 1_A, a second intermediate port 1_B and a third intermediate port 1_C; diode D _2A The anode of the anode is connected with a first intermediate port 1_A, and the cathode of the anode is connected with a positive end V of a direct current bus bar _o ⁺ Or the first end of the load is connected; diode D _2B The anode of the anode is connected with a second middle port 1_B, and the cathode of the anode is connected with a positive end V of a direct current bus _o ⁺ Or the first end of the load is connected; inductor L _2A Is connected with the third intermediate port 1_C, and an inductor L _2A Another terminal of (1) and a diode D _2C Is connected to the cathode of diode D _2C Anode and negative terminal V of DC bus _o ^- Or the second end of the load.

The slave power module S1 comprises a transformer T _2a Inductor L _2a Diode D _2a Diode D _2b And a diode D _2c . Transformer T _2a 2 ports of primary winding and AC power supply v _ac1 2 ports and intermediate taps of the secondary windings are respectively a first intermediate port 1_a, a second intermediate port 1_b and a third intermediate port 1_c; diode D _2a The anode of the anode is connected with a first middle port 1_a, and the cathode of the anode is connected with a positive end V of a direct current bus _o ⁺ Or the first end of the load is connected; diode D _2b The anode of the anode is connected with a second middle port 1_b, and the cathode of the anode is connected with a positive end V of a direct current bus _o ⁺ Or the first end of the load is connected; inductor L _2a Is connected with the third intermediate port 1_c, and an inductor L _2a Another terminal of (1) and a diode D _2c Is connected to the cathode of a diode D _2c Anode and negative terminal V of DC bus _o ^- Or the second end of the load.

The additional module J1 comprises 2 series branches of inductors and diodes. First inductor and diode series branch routing inductor L _a2 And a diode D _a2 Formed by series connection of an inductor L _a2 And a first intermediate terminal of the main power module M1A port 1_A connected to an inductor L _a2 Another terminal of (1) and a diode D _a2 Is connected to the anode of a diode D _a2 Is connected to the third intermediate port 1_c of the slave power module S1; second inductor and diode series branch routing inductor L _b2 And a diode D _b2 Formed by series connection of an inductor L _b2 Is connected with a second intermediate port 1_B of the main power module M1, and an inductor L _b2 Another terminal of (1) and a diode D _b2 Is connected to the anode of a diode D _b2 Is connected to the third intermediate port 1_c of the slave power module S1. In addition to defining the direction of current flow, the diodes in J1 also function to prevent circulating currents when the number of series branches of inductors and diodes is greater than 1. The number of series branches of the inductor and the diode in the J1 can be changed, and the change range is 0 to 2.

For ease of understanding, fig. 3 shows only a portion of the entire multi-input source full-wave rectifier circuit-the master power module M1, the slave power module S1, and the additional module J1. Taking the portion shown in fig. 3 as an example, the steady-state operation process of the cooperative work of the master/slave power module and the additional module is mainly described. When the master/slave power modules work independently, the work processes are typical full-wave rectification work processes, and therefore, the details are not described.

For simplicity, it is assumed that the master power module M1 and the slave power module S1 employ the same components, the transformer T _2A The first port of the primary winding and the secondary winding port 1_A are in the same-name end relation, and the transformer T _2a The first port of the primary winding and the secondary side end winding port 1_a are in the same-name end relation, and T is taken _2A Taking the middle tap of the secondary winding as the center tap, and taking T _2a The middle tap of the secondary winding is a center tap; AC power supply v _AC1 Is a three-level AC power supply (+ V) _AC1 、0、-V _AC1 ) Having a period of T ₁ (ii) a AC power supply v _ac1 (t)＝v _AC1 (t-B*T ₁ ) I.e. v _AC1 And v _ac1 The amplitude or level values, frequency, period, pulse width are all the same, but the initial phase is different. B =1/4 is taken as an example for explanation. One working period T of the circuit shown in FIG. 3 ₁ There are 4 stages, and a typical operating condition is as follows:

(1) Stage 1: v. of _AC1 ＝+V _AC1 &v _ac1 ＝0

At this time, T _2a The secondary side is equivalent to a short circuit;

in the main power module M1: d _2A And D _2C On, D _2B Cut-off, (a) v _AC1 Warp beam T _2A And D _2A DC bus or load, D _2C 、L _2A Forming a 1 st loop;

from the power module S1: d _2a And D _2b Conducting, (b) D _2c Is conducted until L _2a 、D _2a 、D _2b DC bus or load, D _2c Current i in the 2 nd loop _D2c Is zero, period D _2a And D _2b Share in common i _D2c ；

In the additional module J1: d _a2 Conducting, (c) v _AC1 Warp beam T _2A And L _a2 、D _a2 、D _2a 、D _2b DC bus or load, D _2C 、L _2A Form the 3 rd loop during period D _2a And D _2b Sharing the first inductor and the diode series branch current i _a2 ；(d)D _b2 Is conducted until v _AC1 Warp beam T _2A And L _b2 、D _b2 、D _2a 、D _2b DC bus or load, D _2C 、L _2A Current i in the 4 th loop _b2 Zero, period D _2a And D _2b Share in common i _b2 。

(2) And (2) stage: v. of _AC1 ＝0&v _ac1 ＝+V _AC1

At this time, T _2A The secondary side is equivalent to a short circuit;

in the main power module M1: d _2C Conducting, (a) D _2A Is conducted until L _2A 、D _2A DC bus or load, D _2C Current i in loop 1 _D2A Is zero; (b) D _2B Is conducted until L _2A 、D _2B DC bus or load, D _2C Current i in loop 2 _D2B Is zero;

from the power module S1: d _2a And D _2c On, D _2b Cut-off, (c) v _ac1 Warp beam T _2a And D _2a DC bus or load, D _2c 、L _2a Forming a 3 rd loop;

in the additional module J1: d _a2 And D _b2 Conducting, (d) v _ac1 Warp beam T _2a And L _a2 、D _a2 、D _2a DC bus or load, D _2C 、L _2A Forming a 4 th loop; (e) v. of _ac1 Warp beam T _2a And L _b2 、D _b2 、D _2a DC bus or load, D _2C 、L _2A Constituting the 5 th loop.

(3) And (3) stage: v. of _AC1 ＝-V _AC1 &v _ac1 ＝0

At this time, T _2a The secondary side is equivalent to a short circuit;

in the main power module M1: d _2B And D _2C On, D _2A Cut-off, (a) v _AC1 Warp beam T _2A And D _2B DC bus or load, D _2C 、L _2A Forming a 1 st loop;

In the additional module J1: d _b2 Conducting, (c) v _AC1 Warp beam T _2A And L _b2 、D _b2 、D _2a 、D _2b DC bus or load, D _2C 、L _2A Form the 3 rd loop during period D _2a And D _2b Sharing the current i of the second inductor and the diode series branch _b2 ；(d)D _a2 Is conducted until v _AC1 Warp beam T _2A And L _a2 、D _a2 、D _2a 、D _2b DC bus or load, D _2C 、L _2A Current i in the 4 th loop _a2 Is zero, period D _2a And D _2b Share in common i _a2 。

(4) And (4) stage: v. of _AC1 ＝0&v _ac1 ＝-V _AC1

At this time, T _2A The secondary side is equivalent to a short circuit;

in the main power module M1: d _2C Conducting, (a) D _2A Is conducted until L _2A 、D _2A DC bus or load, D _2C Current i in the 1 st loop formed _D2A Is zero; (b) D _2B Is conducted until L _2A 、D _2B DC bus or load, D _2C Current i in the 2 nd loop _D2B Is zero;

from the power module S1: d _2b And D _2c On, D _2a Cut-off, (c) v _ac1 Warp beam T _2a And D _2b DC bus or load, D _2c 、L _2a Forming a 3 rd loop;

in the additional module J1: d _a2 And D _b2 Conducting, (d) v _ac1 Warp beam T _2a And L _a2 、D _a2 、D _2b DC bus or load, D _2C 、L _2A Forming a 4 th loop; (e) v. of _ac1 Warp beam T _2a And L _b2 、D _b2 、D _2b DC bus or load, D _2C 、L _2A Constituting the 5 th loop.

It can be seen from the above working process that when the master power module M1, the slave power module S1 and the additional module J1 work cooperatively, the electric energy of 2 ac power sources is converted and supplied to the dc bus or the load in an interlaced manner.

The working process of the J1 with the number of the series branches of the inductor and the diode being 1 is similar to that described above, and is not described again. For easy understanding of the effect of the add-on module J1 on the output characteristics (mainly output power and output current ripple) of the full-wave rectifier circuit of the overall multi-input source, assume: v _AC1 ＝20V，v _AC1 Period T of ₁ ＝90μs，v _AC1 Is + V _AC1 Pulse width of T ₁ /4，v _AC1 Of (a) to (V) _AC1 Pulse width also T ₁ /4，T _2A And T _2a The original secondary turn ratio is 1 _o =20V. Take 3 cases for further explanation. Case 1: b =0; case 2: b =1/8; case 3: b =1/4.

Get L _a2 ＝L _b2 ＝L _2A ＝L _2a Fig. 4 shows an output power behavior of example 2 of the present invention in the above 3 cases, and fig. 5 shows an output current ripple behavior of example 2 of the present invention in the above 3 cases. As can be seen from fig. 4 and 5, (i) the presence and absence of the additional module J1 (corresponding to the case where the number of its internal series branches of inductors and diodes is 0) has an effect on both the output power and the output current ripple of example 2; (ii) When the additional module J1 exists, the number of series branches of its internal inductor and diode has an influence on both the output power and the output current ripple of embodiment 2; (iii) AC power supply v _AC1 And v _ac1 The phase difference of (a) also has an influence on both the output power and the output current ripple of embodiment 2.

With the above features, the adjustment method of embodiment 2 is applicable, including any combination of the following steps:

step 1: increasing or decreasing the number of additional modules J1 (0 to 1);

step 2: increasing or decreasing the number of series branches of inductors and diodes in the additional module (0 to 2);

step 3: changing the inductance (L) of the internal inductance of the add-on module _a2 And/or L _b2 )；

Step 4: varying the AC power supply v connected to the main power module M1 _AC1 The phase of (d);

step 5: varying the AC power supply v connected to the slave power module S1 _ac1 Phase (BxT) ₁ )。

Example 3

Referring to fig. 6, a multi-input source full wave rectifier circuit includes at least 1 master power module, at least 1 slave power module, and at least 1 additional module.

Wherein, 1 master power module is M1,1 slave power module is S1, and 1 additional module is J1.

The main power module M1 is the same as that of embodiment 2.

The slave power module S1 is the same as that of embodiment 1.

The additional module J1 comprises 4 series branches of inductors and diodes. First inductor and diode series branch routing inductor L _a3 And a diode D _a3 Formed by series connection of an inductor L _a3 One end of the inductor L is connected with a first middle port 1_A of the M1 _a3 Another terminal of (D) and diode D _a3 Is connected to the anode of a diode D _a3 The cathode of (a) is connected with a first intermediate port 1_a of S1; second inductor and diode series branch routing inductor L _b3 And a diode D _b3 Formed by series connection of an inductor L _b3 One end of the inductor L is connected with a first middle port 1_A of the M1 _b3 Another terminal of (D) and diode D _b3 Is connected to the anode of a diode D _b3 Is connected with a second intermediate port 1_b of S1; third inductor and diode series branch routing inductor L _c3 And a diode D _c3 Formed by series connection of an inductor L _c3 One end of the inductor L is connected with a second middle port 1_B of the M1 _c3 Another terminal of (1) and a diode D _c3 Is connected to the anode of a diode D _c3 The cathode of (a) is connected with a first intermediate port 1_a of S1; fourth inductor and diode series branch routing inductor L _d3 And a diode D _d3 Formed by series connection of an inductor L _d3 One end of the inductor L is connected with a second middle port 1_B of the M1 _d3 Another terminal of (D) and diode D _d3 Is connected to the anode of a diode D _d3 Is connected to the second intermediate port 1_b of S1. In addition to defining the direction of current flow, the diodes in J1 also function to prevent circulating currents when the number of series branches of inductors and diodes is greater than 1. The number of series branches of the inductor and the diode in the J1 can be changed, and the change range is 0 to 4.

For ease of understanding, fig. 6 shows only a portion of the entire multi-input source full-wave rectification circuit-the master power module M1, the slave power module S1, and the additional module J1. Taking the portion shown in fig. 6 as an example, the steady-state operation process of the cooperative work of the master/slave power module and the additional module is mainly described. When the master/slave power modules work independently, the work processes are typical full-wave rectification work processes, and therefore, the details are not described.

For simplicity, it is assumed that the master power module M1 and the slave power module S1 employ the same components, the transformer T _2A The first port of the primary winding and the secondary winding port 1_A are in the same-name end relation, and the transformer T _1a The first port of the primary winding and the secondary side end winding port 1_a are in the same-name end relation, and T is taken _2A Taking the middle tap of the secondary winding as the center tap, and taking T _1a The middle tap of the secondary winding is a center tap; AC power supply v _AC1 Is a three-level AC power supply (+ V) _AC1 、0、-V _AC1 ) Having a period of T ₁ Ac power supply v _ac1 (t)＝v _AC1 (a.t), i.e. v _AC1 And v _ac1 The amplitude or level value, the initial phase, the pulse width ratio are the same, but the frequency and the period are different. The example is a = 2. One working period T of the circuit shown in FIG. 6 ₁ Can be divided into 8 stages, and a typical working condition is as follows:

(1) Stage 1: v. of _AC1 ＝+V _AC1 &v _ac1 ＝+V _AC1

In the main power module M1: d _2A And D _2C On, D _2B Cut-off, (a) v _AC1 Warp beam T _2A And D _2A DC bus and load, D _2C 、L _2A Forming a 1 st loop;

from the power module S1: d _1b And D _1c On, D _1a Cut-off, (b) v _ac1 Warp beam T _1a And L _1a 、D _1c DC bus or load, D _1b Forming a 2 nd loop;

in the additional module J1: d _b3 Conducting, (c) v _AC1 Warp beam T _2A 、v _ac1 Warp beam T _1a And L _b3 、D _b3 、L _1a 、D _1c DC busOr load, D _2C 、L _2A Forming a 3 rd loop; (d) D _a3 Is conducted until the voltage is from v _AC1 Warp beam T _2A 、v _ac1 Warp beam T _1a And L _a3 、D _a3 、L _1a 、D _1c DC bus or load, D _2C 、L _2A Current i in the 4 th loop _a3 Is zero; (e) D _c3 Is conducted until the voltage is from v _AC1 Warp beam T _2A 、v _ac1 Warp beam T _1a And L _c3 、D _c3 、L _1a 、D _1c DC bus or load, D _2C 、L _2A Current i in the 5 th loop _c3 Is zero; (f) D _d3 Is conducted until the voltage is from v _AC1 Warp beam T _2A 、v _ac1 Warp beam T _1a And L _d3 、D _d3 、L _1a 、D _1c DC bus or load, D _2C 、L _2A Current i in the 6 th loop _d3 Is zero.

(2) And (2) stage: v. of _AC1 ＝+V _AC1 &v _ac1 ＝0

At this time, T _1a The secondary side is equivalent to a short circuit;

from the power module S1: d _1a 、D _1b And D _1c Conducting, (b) L _1a 、D _1c DC bus or load, D _1a 、D _1b Forming a 2 nd loop, during which the current in the 2 nd loop is represented by D _1a And D _1b Sharing together;

in the additional module J1: d _a3 And D _b3 On, D _c3 And D _d3 Cut-off, (c) v _AC1 Warp beam T _2A And L _a3 、D _a3 、L _1a 、D _1c DC bus or load, D _2C 、L _2A Forming a 3 rd loop; (d) v. of _AC1 Warp beam T _2A And L _b3 、D _b3 、L _1a 、D _1c DC bus or load, D _2C 、L _2A Constituting the 4 th loop.

(3) And (3) stage: v. of _AC1 ＝0&v _ac1 ＝-V _AC1

At this time, T _2A The secondary side is equivalent to a short circuit;

in the main power module M1: d _2A 、D _2B And D _2C Conducting, (a) L _2A 、D _2A 、D _2B DC bus or load, D _2C Forming a 1 st loop, during which the current in the 1 st loop is represented by D _2A And D _2B Sharing together;

from the power module S1: d _1a And D _1c On, D _1b Cut-off, (b) v _ac1 Warp beam T _1a And L _1a 、D _1c DC bus or load, D _1a Forming a 2 nd loop;

in the additional module J1: d _a3 And D _c3 On, D _d3 Cut-off, (c) v _ac1 Warp beam T _1a And L _a3 、D _a3 、L _1a 、D _1c DC bus or load, D _2C 、L _2A Forming a 3 rd loop; (d) v. of _ac1 Warp beam T _1a And L _c3 、D _c3 、L _1a 、D _1c DC bus or load, D _2C 、L _2A Forming a 4 th loop; (e) D _b3 Is conducted until the voltage is from v _ac1 Warp beam T _1a And L _b3 、D _b3 、L _1a 、D _1c DC bus or load, D _2C 、L _2A Current i in the 5 th loop _b3 Is zero.

(4) And (4) stage: v. of _AC1 ＝0&v _ac1 ＝0

At this time, T _2A Minor edge and T _1a The secondary sides all correspond to short circuits;

in the main power module M1: d _2C Conducting, (a) D _2A Is conducted until L _2A 、D _2A DC bus or load, D _2C Current i in the 1 st loop formed _D2A Is zero; (b)D _2B Is conducted until L _2A 、D _2B DC bus or load, D _2C Current i in the 2 nd loop _D2B Is zero;

from the power module S1: d _1c Conducting, (c) D _1a Is conducted until L _1a 、D _1c DC bus or load, D _1a Current i in the 3 rd loop _D1a Is zero; (d) D _1b Is conducted until L _1a 、D _1c DC bus or load, D _1b Current i in the 4 th loop _D1b Is zero;

in the additional module J1: d _a3 、D _b3 、D _c3 、D _d3 Conducting, (e) L _a3 、D _a3 、L _1a 、D _1c DC bus or load, D _2C 、L _2A Forming a 5 th loop; (f) L is _b3 、D _b3 、L _1a 、D _1c DC bus or load, D _2C 、L _2A Forming a 6 th loop; (g) L is _c3 、D _c3 、L _1a 、D _1c DC bus or load, D _2C 、L _2A Forming a 7 th loop; (h) L is _d3 、D _d3 、L _1a 、D _1c DC bus or load, D _2C 、L _2A Constituting the 8 th loop.

(5) And (5) stage: v. of _AC1 ＝-V _AC1 &v _ac1 ＝+V _AC1

in the additional module J1: d _d3 Conducting, (c) v _AC1 Warp beam T _2a 、v _ac1 Warp beam T _1a And L _d3 、D _d3 、L _1a 、D _1c DC bus or load, D _2C 、L _2A Forming a 3 rd loop; (d) D _a3 Is conducted until the voltage is from v _AC1 Warp beam T _2A 、v _ac1 Warp beam T _1a And L _a3 、D _a3 、L _1a 、D _1c DC bus or load, D _2C 、L _2A Current i in the 4 th loop _a3 Is zero; (e) D _b3 Is conducted until the voltage is from v _AC1 Warp beam T _2A 、v _ac1 Warp beam T _1a And L _b3 、D _b3 、L _1a 、D _1c DC bus or load, D _2C 、L _2A Current i in the 5 th loop _b3 Is zero; (f) D _c3 Is conducted until the voltage is from v _AC1 Warp beam T _2A 、v _ac1 Warp beam T _1a And L _c3 、D _c3 、L _1a 、D _1c DC bus or load, D _2C 、L _2A Current i in the 6 th loop _c3 Is zero.

(6) And 6: v. of _AC1 ＝-V _AC1 &v _ac1 ＝0

At this time, T _1a The secondary side is equivalent to a short circuit;

in the additional module J1: d _c3 And D _d3 On, D _a3 And D _b3 Cut-off, (c) v _AC1 Warp beam T _2A And L _c3 、D _c3 、L _1a 、D _1c DC bus or load, D _2C 、L _2A Forming a 3 rd loop; (d) v. of _AC1 Warp beam T _2A And L _d3 、D _d3 、L _1a 、D _1c DC bus or load, D _2C 、L _2A Constituting the 4 th loop.

(7) And (7) stage: v. of _AC1 ＝0&v _ac1 ＝-V _AC1

At this time, T _2A The secondary side is equivalent to a short circuit;

in the additional module J1: d _a3 And D _c3 On, D _b3 Cut-off, (c) v _ac1 Warp beam T _1a And L _a3 、D _a3 、L _1a 、D _1c DC bus or load, D _2C 、L _2A Forming a 3 rd loop; (d) v. of _ac1 Warp beam T _1a And L _c3 、D _c3 、L _1a 、D _1c DC bus or load, D _2C 、L _2A Forming a 4 th loop; (e) D _d3 Is conducted until the voltage is from v _ac1 Warp beam T _1a And L _d3 、D _d3 、L _1a 、D _1c DC bus or load, D _2C 、L _2A Current i in the 5 th loop _d3 Is zero.

(8) And (8): v. of _AC1 ＝0&v _ac1 ＝0

It can be seen from the above working process that when the master power module M1, the slave power module S1 and the additional module J1 work cooperatively, the electric energy of 2 ac power sources is converted and supplied to the dc bus or the load in an interlaced manner or in a combined manner.

The working process of the series branch circuit of the inductor and the diode in the J1 is 1 to 3, which is similar to that described above and is not described again. To facilitate understanding of the effect of the additional module J1 on the output characteristics (mainly output power and output current ripple) of the full-wave rectifier circuit of the overall multi-input source, assume: v _AC1 ＝20V，v _AC1 Period T of ₁ ＝90μs，v _AC1 Is + V _AC1 Pulse width of T ₁ /4，v _AC1 Of (a) to (V) _AC1 Pulse width also T ₁ /4，T _2A And T _1a The original secondary turn ratio is 1 _o =20V. Take 2 cases for further explanation. Case 1: a =2; case 2: a =1.

Taking L _a3 ＝L _b3 ＝L _c3 ＝L _d3 ＝L _2A ＝L _1a Fig. 7 shows an output power behavior of example 3 of the present invention in the above 2 cases, and fig. 8 shows an output current ripple behavior of example 3 of the present invention in the above 2 cases. As can be seen from fig. 7 and 8, (i) the presence and absence of the additional module J1 (corresponding to the case where the number of its internal series branches of inductors and diodes is 0) has an effect on both the output power and the output current ripple of example 3; (ii) The number of the series branches of the inductor and the diode inside the additional module J1 has an influence on both the output power and the output current ripple of embodiment 3; (iii) AC power supply v _AC1 And v _ac1 Also, the frequency difference or the period difference of (2) has an influence on both the output power and the output current ripple of embodiment 3.

In addition, the inductance value of the internal inductance of the additional module also has an influence on the output characteristics (including output power and output current ripple) of the full-wave rectifying circuit of the whole multi-input source.

With the above features, the adjustment method of embodiment 3 is applicable, including any combination of the following steps:

step 1: increasing or decreasing the number of additional modules J1 (0 to 1);

step 2: increasing or decreasing the number of series branches of inductors and diodes in the additional module (0 to 4);

step 3: changing the inductance (L) of the inductance inside the add-on module _a3 And/or L _b3 And/or L _c3 And/or L _d3 )；

Step 4: varying the AC power supply v connected to the main power module M1 _AC1 Frequency or period (T) ₁ )；

Step 5: varying the AC power supply v connected to the slave power module S1 _ac1 Frequency or period (T) ₁ /a)。

Example 4

A multi-input source full-wave rectification circuit comprises at least 1 main power module, at least 1 slave power module and at least 1 additional module.

The main power module M1 is the same as that of embodiment 1.

The slave power module S1 is the same as that of embodiment 2.

The additional module J1 is the same as in embodiment 3.

Structurally, example 4 and example 3 can be viewed as reciprocal relationships. The working principles of the two are equivalent, the effects are equivalent, and the description is omitted.

The same adjustment method as that applied to example 3 is also applied to example 4.

Further, the same additional module as in embodiment 1 or embodiment 2 can be used in embodiment 4.

As described above, the master power module and the slave power module each have 2 configurations, and the additional module also has 3 configurations (see additional modules of embodiment 1, embodiment 2, and embodiment 3). Only simple permutation combinations can form at least 12 embodiments. Exemplary embodiments 1 to 4 are selected for illustration and explanation, and the other embodiments are not repeated because the operation principles are substantially similar.

Although diodes are used for freewheeling and energy transfer on the secondary side of each transformer in the above embodiments, it will be understood by those skilled in the art that the diodes may be replaced by controllable switching devices (e.g., synchronous rectifier MOSFETs). Further, the alternating-current power source in the foregoing embodiments may be an electric power (electronic) device that outputs alternating current, such as AC-AC, DC-AC, or the like; they may be of the same or different origin. The parameters of the transformer (such as the number of turns of the primary side and the secondary side, the excitation inductance, the relation of homonymous terminals, the position of a middle tap and the like) in the master power module and the slave power module can be the same or different. The number of the series branches of the inductor and the diode in the additional module, the component composition and the component connection mode can be selected and adjusted according to specific applications. In addition to the series connection of the inductor and the diode, the aforementioned series branch of the inductor and the diode may additionally comprise other types of components or combinations of components, without departing from the scope of the present invention. The embodiments described in this specification are merely illustrative of implementations of the inventive concept and the scope of the present invention should not be considered limited to the specific forms set forth in the embodiments but rather by the equivalents thereof as may occur to those skilled in the art upon consideration of the present inventive concept.

Claims

1. A full-wave rectification circuit with multiple input sources comprises a master power module, a slave power module and an additional module; wherein:

the main power module includes:

two ports and middle taps of a secondary winding of the first transformer are respectively a first middle port, a second middle port and a third middle port of the main power module;

the cathode of the first diode is connected with the first middle port of the main power module, and the anode of the first diode is used for being connected with the negative end of the direct current bus or the second end of the load;

the cathode of the second diode is connected with the second middle port of the main power module, and the anode of the second diode is used for being connected with the negative end of the direct current bus or the second end of the load; and

the current input end of the series branch circuit is connected with the third middle port of the main power module, and the current output end of the series branch circuit is used for being connected with the positive end of the direct current bus or the first end of the load;

the slave power module includes:

two ports of a primary winding of the second transformer are used for being connected with a second alternating current power supply, and two ports and a middle tap of a secondary winding of the second transformer are respectively a first middle port, a second middle port and a third middle port of the secondary power module;

a fourth diode, the cathode of which is connected with the first middle port of the slave power module, and the anode of which is used for being connected with the negative end of the direct current bus or the second end of the load;

a fifth diode, the cathode of which is connected with the second middle port of the slave power module, and the anode of which is used for being connected with the negative end of the direct current bus or the second end of the load; and

the current input end of the series branch circuit is connected with the third middle port of the slave power module, and the current output end of the series branch circuit is used for being connected with the positive end of the direct current bus or the first end of the load;

the additional module comprises at least one inductor and diode series branch, wherein:

the current input end of the inductor and the diode are connected with the third middle port of the main power module, and the current output end of the inductor and the diode are connected with the first middle port or the second middle port of the slave power module;

or, the inductor and the diode are connected in series with a branch circuit, a current input end of the branch circuit is connected with a first middle port or a second middle port of the master power module, and a current output end of the branch circuit is connected with a third middle port of the slave power module;

or, the inductor and the diode are connected in series with each other, a current input end of the inductor and the diode is connected with the first intermediate port or the second intermediate port of the master power module, and a current output end of the inductor and the diode is connected with the first intermediate port or the second intermediate port of the slave power module.

2. The multi-input source rectifier circuit of claim 1, wherein the additional module comprises a first inductor and diode series branch and a second inductor and diode series branch, wherein current inputs of the first inductor and diode series branch and the second inductor and diode series branch are connected to the third intermediate port of the master power module, a current output of the first inductor and diode series branch is connected to the first intermediate port of the slave power module, and a current output of the second inductor and diode series branch is connected to the second intermediate port of the slave power module.

3. A full-wave rectification circuit with multiple input sources comprises a master power module, a slave power module and an additional module; wherein:

the main power module includes:

the anode of the first diode is connected with the first middle port of the main power module, and the cathode of the first diode is used for being connected with the positive end of the direct current bus or the first end of the load;

the anode of the second diode is connected with the second middle port of the main power module, and the cathode of the second diode is used for being connected with the positive end of the direct current bus or the first end of the load; and

the current output end of the series branch circuit is connected with a third middle port of the main power module, and the current input end of the series branch circuit is used for being connected with the negative end of the direct current bus or the second end of the load;

the slave power module includes:

the anode of the fourth diode is connected with the first middle port of the slave power module, and the cathode of the fourth diode is used for being connected with the positive end of the direct current bus or the first end of the load;

the anode of the fifth diode is connected with the second middle port of the slave power module, and the cathode of the fifth diode is used for being connected with the positive end of the direct current bus or the first end of the load; and

the current output end of the series branch circuit is connected with the third middle port of the slave power module, and the current input end of the series branch circuit is used for being connected with the negative end of the direct current bus or the second end of the load;

the current input end of the inductor and the diode are connected with the first middle port or the second middle port of the master power module, and the current output end of the inductor and the diode are connected with the third middle port of the slave power module;

or, the inductor and the diode are connected in series with each other, a current input end of the inductor and the diode is connected with a third middle port of the master power module, and a current output end of the inductor and the diode is connected with a first middle port or a second middle port of the slave power module;

4. The multi-input source rectifier circuit of claim 3, wherein the additional module comprises a first inductor and diode series branch and a second inductor and diode series branch, wherein a current input terminal of the first inductor and diode series branch is connected to the first intermediate port of the master power module, a current input terminal of the second inductor and diode series branch is connected to the second intermediate port of the master power module, and a current output terminal of the first inductor and diode series branch and the second inductor and diode series branch is connected to the third intermediate port of the slave power module.

5. A full-wave rectification circuit with multiple input sources comprises a master power module, a slave power module and an additional module; wherein:

the main power module includes:

a second diode having an anode connected to the second intermediate port of the main power module,

the cathode of the direct current bus is used for being connected with the positive end of the direct current bus or the first end of the load; and

the slave power module includes:

the current input end of the inductor and the diode are connected with the first middle port or the second middle port of the master power module, and the current output end of the inductor and the diode are connected with the first middle port or the second middle port of the slave power module;

or, the inductor and the diode are connected in series with a branch circuit, a current input end of the branch circuit is connected with a third middle port of the master power module, and a current output end of the branch circuit is connected with a first middle port or a second middle port of the slave power module.

6. The multi-input source full wave rectification circuit of claim 5, wherein the additional module comprises a first inductor and diode series branch, a second inductor and diode series branch, a third inductor and diode series branch, and a fourth inductor and diode series branch, wherein current input terminals of the first inductor and diode series branch and the second inductor and diode series branch are connected to a first intermediate port of the master power module, current input terminals of the third inductor and diode series branch and the fourth inductor and diode series branch are connected to a second intermediate port of the master power module, current output terminals of the first inductor and diode series branch and the third inductor and diode series branch are connected to a first intermediate port of the slave power module, and current output terminals of the second inductor and diode series branch and the fourth inductor and diode series branch are connected to a second intermediate port of the slave power module.

7. A full-wave rectification circuit with multiple input sources comprises a master power module, a slave power module and an additional module; wherein:

the main power module includes:

the slave power module includes:

or, the inductor and the diode are connected in series to form a branch, a current input end of the branch is connected with the third intermediate port of the master power module, and a current output end of the branch is connected with the first intermediate port or the second intermediate port of the slave power module.

8. The multi-input source full-wave rectification circuit as claimed in any one of claims 1 to 7, wherein some or all of the diodes are replaced by controllable switching devices.

9. The multi-input source full-wave rectification circuit as claimed in any one of claims 1 to 7, wherein the parameters of the first transformer and the second transformer are the same.

10. The regulation method of the full-wave rectification circuit of the multi-input source according to any one of claims 1 to 7, comprising any combination of the following steps:

step 0: changing the kind of the additional module;

step 1: increasing or decreasing the number of additional modules;

and 4, step 4: changing an operating parameter of a first AC power source connected to a main power module;

and 5: changing an operating parameter of a second ac power source connected to the slave power module.