AC-DC voltage conversion module, output voltage regulation method thereof and application circuit

Abstract

The invention discloses an AC-DC voltage conversion module, an output voltage regulation method thereof and an application circuit, and the AC-DC voltage conversion module has a forward basic structure and a reverse basic structure, and each of the AC-DC voltage conversion modules comprises two diodes, one inductor, one capacitor and at least one AC voltage module, and also comprises three ports. The AC-DC forward voltage conversion module and the AC-DC backward voltage conversion module have the capability of being connected with a plurality of power supplies, voltage boosting or voltage reducing can be achieved, output voltage adjusting methods are diversified, and various application circuits can be obtained through module combination.

Description

Technical Field

[0001] This invention relates to voltage conversion modules, and more particularly to AC-DC voltage conversion modules, their output voltage regulation methods, and application circuits constructed therefrom. Background Technology

[0002] A voltage multiplier circuit is a typical AC-DC boost module. Cascading it can achieve higher gain, and it can be used in applications requiring high DC output, such as electrostatic generators, high-voltage (pulse) power supplies, and dual-pulse testing devices. Both voltage multiplier circuits and their cascaded forms consist of capacitors and diodes, offering the advantage of simple structure, but also exhibiting significant drawbacks such as high current stress and low efficiency, currently limiting its application to low-current situations. Furthermore, voltage multiplier circuits and their cascaded forms are single-supply inputs and cannot connect to multiple power sources to achieve higher output voltages. Additionally, voltage multiplier circuits lack the ability to step down voltage. Summary of the Invention

[0003] To overcome the shortcomings of existing voltage multiplier circuits, such as high current stress, low efficiency, single power supply input, and inability to step down voltage, this invention proposes an AC-DC voltage conversion module, which includes two basic structures: forward and reverse. The output voltage is adjustable, and it can achieve voltage boost or buck, and can be used to construct various application circuits.

[0004] A first AC-DC forward voltage conversion module according to an embodiment of the present invention includes two diodes, one inductor, one capacitor, and one AC voltage module, and also includes three ports, wherein:

[0005] The first diode has its anode connected to the first port and its cathode connected to one end of the AC voltage module.

[0006] The second diode has its anode connected to the second port and its cathode connected to the other end of the AC voltage module.

[0007] One end of the inductor is connected to the other end of the AC voltage module, and the other end is connected to the third port;

[0008] The capacitor has one end connected to the third port and the other end connected to the second port;

[0009] The first port is the AC input terminal, the second port is both the AC input terminal and the DC output terminal, and the third port is the DC output terminal;

[0010] The AC voltage module outputs AC power from one end to the other.

[0011] The first type of AC-DC forward voltage conversion module has a third port voltage that is higher than the second port voltage.

[0012] A second AC-DC forward voltage conversion module according to an embodiment of the present invention includes two diodes, one inductor, one capacitor, and one AC voltage module, and also includes three ports, wherein:

[0013] The first diode has its anode connected to the first port and its cathode connected to one end of the AC voltage module.

[0014] The second diode has its anode connected to the second port and its cathode connected to the other end of the AC voltage module.

[0015] The inductor has one end connected to one end of the AC voltage module and the other end connected to the third port.

[0016] The capacitor has one end connected to the third port and the other end connected to the second port;

[0017] The first port is the AC input terminal, the second port is both the AC input terminal and the DC output terminal, and the third port is the DC output terminal;

[0018] The AC voltage module outputs AC power from one end to the other.

[0019] The second type of AC-DC forward voltage conversion module has a third port voltage that is higher than the second port voltage.

[0020] The third AC-DC forward voltage conversion module according to an embodiment of the present invention includes two diodes, one inductor, one capacitor, and two AC voltage modules, and also includes three ports, wherein:

[0021] The first diode has its anode connected to the first port and its cathode connected to one end of the first AC voltage module.

[0022] The second diode has its anode connected to the second port and its cathode connected to the other end of the second AC voltage module.

[0023] The inductor has one end connected to both the other end of the first AC voltage module and one end of the second AC voltage module, and its other end connected to the third port.

[0024] The capacitor has one end connected to the third port and the other end connected to the second port;

[0025] The first port is the AC input terminal, the second port is both the AC input terminal and the DC output terminal, and the third port is the DC output terminal;

[0026] The first AC voltage module outputs AC power from one end to the other, and the second AC voltage module outputs AC power from one end to the other.

[0027] The third type of AC-DC forward voltage conversion module has a third port voltage that is higher than the second port voltage.

[0028] The first AC-DC reverse voltage conversion module according to an embodiment of the present invention includes two diodes, one inductor, one capacitor, and one AC voltage module, and also includes three ports, wherein:

[0029] The first diode has its cathode connected to the first port and its anode connected to one end of the AC voltage module.

[0030] The second diode has its cathode connected to the second port and its anode connected to the other end of the AC voltage module.

[0031] One end of the inductor is connected to the other end of the AC voltage module, and the other end is connected to the third port;

[0032] The capacitor has one end connected to the third port and the other end connected to the second port;

[0033] The first port is the AC input terminal, the second port is both the AC input terminal and the DC output terminal, and the third port is the DC output terminal;

[0034] The AC voltage module outputs AC power from one end to the other.

[0035] In the first type of AC-DC reverse voltage conversion module, the voltage at the third port is lower than the voltage at the second port.

[0036] The second AC-DC reverse voltage conversion module according to an embodiment of the present invention includes two diodes, one inductor, one capacitor, and one AC voltage module, and also includes three ports, wherein:

[0037] The first diode has its cathode connected to the first port and its anode connected to one end of the AC voltage module.

[0038] The second diode has its cathode connected to the second port and its anode connected to the other end of the AC voltage module.

[0039] The inductor has one end connected to one end of the AC voltage module and the other end connected to the third port.

[0040] The capacitor has one end connected to the third port and the other end connected to the second port;

[0041] The first port is the AC input terminal, the second port is both the AC input terminal and the DC output terminal, and the third port is the DC output terminal;

[0042] The AC voltage module outputs AC power from one end to the other.

[0043] The voltage at the third port of the second type of AC-DC reverse voltage conversion module is lower than that at the second port.

[0044] The third AC-DC reverse voltage conversion module according to an embodiment of the present invention includes two diodes, one inductor, one capacitor, and two AC voltage modules, and also includes three ports, wherein:

[0045] The first diode has its cathode connected to the first port and its anode connected to one end of the first AC voltage module;

[0046] The second diode has its cathode connected to the second port and its anode connected to the other end of the second AC voltage module.

[0047] The inductor has one end connected to both the other end of the first AC voltage module and one end of the second AC voltage module, and its other end connected to the third port.

[0048] The capacitor has one end connected to the third port and the other end connected to the second port;

[0049] The first port is the AC input terminal, the second port is both the AC input terminal and the DC output terminal, and the third port is the DC output terminal;

[0050] The first AC voltage module outputs AC power from one end to the other, and the second AC voltage module outputs AC power from one end to the other.

[0051] The third type of AC-DC reverse voltage conversion module has a third port voltage that is lower than the second port voltage.

[0052] Any AC voltage module in the AC-DC forward or reverse voltage conversion module according to an embodiment of the present invention includes a transformer, wherein:

[0053] The transformer includes a primary winding and a secondary winding. The first and second ports of the primary winding are both AC input terminals. The first port of the secondary winding is connected to one end of the AC voltage module, and the second port of the secondary winding is connected to the other end of the AC voltage module.

[0054] The first and second ends of the primary winding of the transformer can be connected to either end of any AC power source.

[0055] In the third type of AC-DC forward or reverse voltage conversion module according to an embodiment of the present invention, the first AC voltage module and the second AC voltage module share one transformer, wherein:

[0056] The transformer includes a primary winding, a first secondary winding, and a second secondary winding. The first and second ports of the primary winding are both AC input terminals. The first port of the first secondary winding is connected to one end of the first AC voltage module, and the second port of the first secondary winding is connected to the other end of the first AC voltage module. The first port of the second secondary winding is connected to one end of the second AC voltage module, and the second port of the second secondary winding is connected to the other end of the second AC voltage module.

[0057] The first and second ends of the primary winding of the transformer can be connected to either end of any AC power source.

[0058] According to an embodiment of the present invention, the output voltage regulation method of the above-described AC-DC voltage conversion module includes any combination of the following steps:

[0059] Step 1: Change the parameters of the first AC power supply connected to the AC input terminal of the AC-DC voltage conversion module, including amplitude, frequency, phase, and waveform;

[0060] Step 2: Change the parameters of any or all of the AC voltage modules in the AC-DC voltage conversion module, including the amplitude, frequency, phase and waveform of the output voltage;

[0061] Step 3: If the AC voltage module in the AC-DC voltage conversion module contains a transformer, then change the transformer parameters, including the same-name terminal relationship and the turns ratio;

[0062] Step 4: If the AC voltage module in the AC-DC voltage conversion module is connected to other AC power sources, change the parameters of the AC power source connected to the AC voltage module, including amplitude, frequency, phase, and waveform.

[0063] According to embodiments of the present invention, the application circuit includes at least two AC-DC voltage conversion modules, for example: at least one AC-DC forward voltage conversion module and / or at least one AC-DC reverse voltage conversion module. The connection configurations of multiple AC-DC voltage conversion modules include: cascading, input parallel / output parallel, input series / output parallel, input parallel / output series, input series / output series, etc.

[0064] In the above application circuit, each AC-DC voltage conversion module can share an AC voltage module with other AC-DC voltage conversion modules. Alternatively, any AC voltage module of each AC-DC voltage conversion module can share a transformer with any AC voltage module of other AC-DC voltage conversion modules.

[0065] In some embodiments, the diodes described above can be replaced by controllable switching devices (e.g., synchronous rectifier MOSFETs); the AC power supply connected to the AC input terminal of the AC-DC voltage conversion module can be AC ​​power of any waveform, such as: sine wave, square wave, multi-level pulse, triangular wave, etc., and is also allowed to contain DC components; any AC voltage module in the AC-DC voltage conversion module can output arbitrary AC power, and is allowed to contain DC components.

[0066] The beneficial effects of this invention are mainly reflected in the following: the AC-DC forward and reverse voltage conversion modules according to embodiments of this invention both have the advantages of low current stress and high efficiency. Because they all include an AC voltage module, the aforementioned AC-DC voltage conversion modules are capable of connecting to multiple power sources, enabling voltage boosting or bucking, and offering diverse output voltage adjustment methods. Various application circuits can be obtained through module combinations. Attached Figure Description

[0067] Figure 1 This is the circuit diagram of the first AC-DC forward voltage conversion module of the present invention.

[0068] Figure 2 This is a bar chart of the output voltage of Embodiment 1 of the present invention.

[0069] Figure 3 This is the circuit diagram of the second type of AC-DC forward voltage conversion module of the present invention.

[0070] Figure 4 This is a bar chart of the output voltage of Embodiment 2 of the present invention.

[0071] Figure 5 This is the circuit diagram of the third type of AC-DC forward voltage conversion module of the present invention.

[0072] Figure 6 This is a bar chart of the output voltage in Embodiment 3 of the present invention.

[0073] Figure 7 This is the circuit diagram of the first AC-DC reverse voltage conversion module of the present invention.

[0074] Figure 8 This is the circuit diagram of the second type of AC-DC reverse voltage conversion module of the present invention.

[0075] Figure 9 This is the circuit diagram of the third type of AC-DC reverse voltage conversion module of the present invention.

[0076] Figure 10 This is the circuit diagram of the first AC voltage module of the present invention.

[0077] Figure 11 This is the circuit diagram of the second AC voltage module of the present invention.

[0078] Figure 12 This is a cascaded application circuit diagram of the present invention.

[0079] Figure 13 This is an application circuit diagram of the present invention, showing parallel input / series output.

[0080] Figure 14 This is an application circuit diagram of the present invention, showing an input series / output series connection. Detailed Implementation

[0081] The present invention will now be further described with reference to the accompanying drawings. It should be noted that the embodiments described herein are for illustrative purposes only and are not intended to limit the invention. In the following description, numerous specific details are set forth to facilitate a thorough understanding of the invention. However, those skilled in the art will understand that these specific details are not essential for carrying out the invention. Furthermore, in some embodiments, well-known circuits, materials, or methods are not specifically described to avoid obscuring the invention.

[0082] Throughout this specification, references to "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in connection with that embodiment or example is included in at least one embodiment of the invention. Therefore, the phrases "in an embodiment," "in an embodiment," "an example," or "an example" appearing in various places throughout the specification do not necessarily refer to the same embodiment or example. Furthermore, specific features, structures, or characteristics can be combined in one or more embodiments or examples in any suitable combination and / or sub-combination. Moreover, those skilled in the art will understand that the accompanying drawings provided herein are for illustrative purposes, with the same reference numerals indicating the same elements. It should be understood that when an element is referred to as "connected to" or "coupled" to another element, it can be a direct connection or coupling to the other element, or there may be intermediate elements present.

[0083] Example 1

[0084] refer to Figure 1 and Figure 10 The AC-DC forward voltage conversion module A provided in this embodiment j Including diode D aj_1 Diode D aj_2 Inductor L aj Capacitor C aj and AC voltage module M aj_1 It also includes port a j_1 Port a j_2 and port a j_3 Diode D aj_1 Its anode and port a j_1Connected, its cathode is connected to AC voltage module M aj_1 One end is connected; diode D aj_2 Its anode and port a j_2 Connected, its cathode is connected to AC voltage module M aj_1 The other end is connected; inductor L aj One end of it is connected to AC voltage module M aj_1 One end is connected to the other end, and the other end is connected to port a. j_3 Connected; Capacitor C aj One end of it is connected to port a j_3 Connected, its other end is connected to port a j_2 Connected.

[0085] AC voltage module M aj_1 The system outputs alternating current from one end to the other, including transformer T. gaj_1 Transformer T gaj_1 It includes a primary winding and a secondary winding. The first and second ports of the primary winding are both AC input terminals. The first port of the secondary winding is connected to the AC voltage module M. aj_1 One end is connected to the AC voltage module M, and the second port of its secondary winding is connected to the AC voltage module M. aj_1 The other end is connected.

[0086] Assume A j port a j_1 and port a j_2 Connect to AC power V ac port a j_3 and port a j_2 Connect the load RL; AC voltage module M aj_1 The two AC input terminals are connected to an AC power supply. gaj_1 via transformer T gaj_1 After transformation, AC voltage module M aj_1 The output voltage is v Maj_1 .

[0087] For simplicity, let's further assume the AC power supply is v ac and v gaj_1 Both are square wave AC power supplies with the same frequency and phase, and amplitudes of V respectively. ac and V gaj_1 Capacitor C aj Large enough, capacitor voltage v Caj The ripple is negligible; D aj_1 and D aj_2 For ideal devices. Inductance (L) aj In continuous current mode, a steady-state operating process in Example 1 can be divided into two stages, as follows:

[0088] (1) Phase 1: A jAC input voltage V aj >0 and v aj -v Maj_1 >0

[0089] D aj_1 Conduction, D aj_2 As of now, v ac D aj_1 M aj_1 L aj C aj Together with RL, they form a circuit, and the inductor current i Laj Rise, L aj Energy storage;

[0090] (2) Phase 2: A j AC input voltage V aj <0 and v aj -v Maj_1 <0

[0091] D aj_1 As of the deadline, D aj_2 On, L aj C aj RL and D aj_2 Forming a circuit, the inductor current i Laj Decrease, L aj Release energy.

[0092] When T gaj_1 When the first port of the primary winding and the first port of the secondary winding are of the same name, stage 1: v aj =V ac v Maj_1 =N gaj_1 ·V gaj_1 Phase 2: v aj =-V ac v Maj_1 =-N gaj_1 ·V gaj_1 Among them, N gaj_1 For T gaj_1 The number of turns ratio.

[0093] According to the principle of inductor volt-second balance, we can obtain:

[0094]

[0095] As can be seen from equation (1), Example 1 exhibits a pressure reduction working characteristic.

[0096] When T gaj_1 When the first port of the primary winding and the first port of the secondary winding are opposite-named terminals, stage 1: v aj =V ac v Maj_1 =-N gaj_1·V gaj_1 Phase 2: v aj =-V ac v Maj_1 =N gaj_1 ·V gaj_1 Among them, N gaj_1 For T gaj_1 The number of turns ratio.

[0097] According to the principle of inductor volt-second balance, we can obtain:

[0098]

[0099] From equation (2), we can see that when N gaj_1 ·V gaj_1 >V ac At that time, the output voltage (i.e., capacitor voltage) v of Example 1 Caj >V ac It exhibits boost voltage operation characteristics; when N gaj_1 ·V gaj_1 <V ac At that time, the output voltage (i.e., capacitor voltage) v of Example 1 Caj <V ac It exhibits voltage reduction operating characteristics.

[0100] Given the AC power supply v ac and v gaj_1 Both can be any AC power supply and AC voltage module M. aj_1 It can output arbitrary alternating currents, with varying amplitudes, frequencies, phases, and waveforms. The corresponding steady-state operating processes include continuous, critical, and discontinuous current modes, which those skilled in the art can analyze independently based on the above description; further details are omitted here.

[0101] AC power supply v ac Parameters, AC voltage module M aj_1 Parameters (e.g., transformer T) gaj_1 The relationship between the same terminal and the number of turns ratio N gaj_1 ) and AC power supply v gaj_1 The parameters all affect the output voltage of Example 1. For example: taking L... aj =500μH, C aj =1μF, RL=25Ω. Figure 2 The output voltage block diagrams for Example 1 are given in the following four cases. (a) Case 1: AC power supply V ac Parameters: amplitude 100V, frequency 100kHz, initial phase 0°, waveform square wave; transformer T gaj_1 The first port of the primary winding and the first port of the secondary winding are of the same name, and the turns ratio N gaj_1 =2; AC power supply Vgaj_1 The parameters are: amplitude 20V, frequency 100kHz, initial phase 0°, and waveform square wave. (b) Case 2: AC power supply V ac Parameters: amplitude 100V, frequency 100kHz, initial phase 0°, waveform square wave; transformer T gaj_1 The first port of the primary winding and the first port of the secondary winding are of the same name, and the turns ratio N gaj_1 =2; AC power supply V gaj_1 The parameters are: amplitude 40V, frequency 100kHz, initial phase 0°, and waveform square wave. (c) Case 3: AC power supply V ac Parameters: amplitude 100V, frequency 100kHz, initial phase 0°, waveform square wave; transformer T gaj_1 The first port of the primary winding and the first port of the secondary winding are of the same name, and the turns ratio N gaj_1 =2; AC power supply V gaj_1 The parameters are: amplitude 20V, frequency 50kHz, initial phase 0°, and waveform square wave. (d) Case 4: AC power supply V ac Parameters: amplitude 100V, frequency 100kHz, initial phase 0°, waveform square wave; transformer T gaj_1 The first port of the primary winding and the first port of the secondary winding are of the same name, and the turns ratio N gaj_1 =2; AC power supply V gaj_1 The parameters are: amplitude of 20V, frequency of 100kHz, initial phase of 180°, and waveform of square wave.

[0102] Based on the above characteristics, the output voltage regulation method applicable to Embodiment 1 includes any combination of the following steps:

[0103] Step 1: Change the AC power supply V ac The parameters include amplitude, frequency, phase, and waveform; Step 2: Change the AC voltage module M aj_1 The parameters, including transformer T gaj_1 The relationship between the same terminal and the number of turns ratio N gaj_1 ;

[0104] Step 3: Change the AC power supply V gaj_1 The parameters include amplitude, frequency, phase, and waveform.

[0105] Example 2

[0106] refer to Figure 3 The AC-DC forward voltage conversion module B provided in this embodiment j Including diode D bj_1 Diode Dbj_2 Inductor L bj Capacitor C bj and AC voltage module M bj_1 It also includes port b j_1 Port b j_2 and port b j_3 Diode D bj_1 Its anode and port b j_1 Connected, its cathode is connected to AC voltage module M bj_1 One end is connected; diode D bj_2 Its anode and port b j_2 Connected, its cathode is connected to AC voltage module M bj_1 The other end is connected; inductor L bj One end of it is connected to AC voltage module M bj_1 One end is connected to port b, and the other end is connected to port b. j_3 Connected; Capacitor C bj One end of it is connected to port b j_3 Connected, its other end is connected to port b j_2 Connected.

[0107] AC voltage module M bj_1 It can output any AC power, and its output voltage parameters include amplitude, frequency, phase, and waveform.

[0108] Assume B j port b j_1 and port b j_2 Connect to AC power V ac port b j_3 and port b j_2 Connect the load RL; AC voltage module M bj_1 The output voltage is v Mbj_1 .

[0109] For simplicity, let's further assume the AC power supply is v ac and AC voltage module M bj_1 Both are square wave AC power supplies with the same frequency but opposite phase, and their amplitudes are V respectively. ac and V Mbj_1 Capacitor C bj Large enough, capacitor voltage v Cbj The ripple is negligible; D bj_1 and D bj_2 For ideal devices. Inductance (L) bj In continuous current mode, the steady-state operation process of Example 2 can be divided into two stages, as follows:

[0110] (1) Phase 1: B j AC input voltage V bj =V ac vMbj_1 =-V Mbj_1

[0111] D bj_1 Conduction, D bj_2 As of now, v ac D bj_1 L bj C bj Together with RL, they form a loop, with V as the apparent value. ac The size of the inductor current i Lbj Whether it rises or falls, L bj It can either store or release energy;

[0112] (2) Phase 2: B j AC input voltage V bj =-V ac v Mbj_1 =V Mbj_1

[0113] D bj_1 As of the deadline, D bj_2 On, L bj C bj , RL, D bj_2 and M bj_1 Forming a loop, depending on V Mbj_1 The size of the inductor current i Lbj Whether it decreases or increases, L bj It can either release or store energy.

[0114] According to the principle of inductor volt-second balance, we can obtain:

[0115]

[0116] From equation (3), it can be seen that when V Mbj_1 >V ac At that time, the output voltage (i.e., capacitor voltage) v in Example 2 Cbj >V ac It exhibits boost voltage operating characteristics; when V Mbj_1 <V ac At that time, the output voltage (i.e., capacitor voltage) v in Example 2 Cbj <V ac It exhibits voltage reduction operating characteristics.

[0117] Given the AC power supply v ac and AC voltage module M bj_1 These can all be any AC power source, and their amplitude, frequency, phase, and waveform parameters can all differ. The corresponding steady-state operating processes include continuous current, critical, and discontinuous current modes, which those skilled in the art can analyze themselves based on the above description, and will not be elaborated further.

[0118] AC power supply vac Parameters and AC voltage module M aj_1 The parameters all affect the output voltage of Example 2. For example: taking L... bj =500μH, C bj =1μF, RL=25Ω. Figure 4 The output voltage block diagrams for Example 2 are given in the following four cases. (a) Case 1: AC power supply V ac The parameters are: amplitude 100V, frequency 100kHz, initial phase 0°, and waveform square wave; AC voltage module M. bj_1 The parameters are: amplitude 120V, frequency 100kHz, initial phase 180°, and waveform square wave. (b) Case 2: AC power supply V ac The parameters are: amplitude 100V, frequency 100kHz, initial phase 0°, and waveform square wave; AC voltage module M. bj_1 The parameters are: amplitude 60V, frequency 100kHz, initial phase 180°, and waveform square wave. (c) Case 3: AC power supply V ac The parameters are: amplitude 100V, frequency 100kHz, initial phase 0°, and waveform square wave; AC voltage module M. bj_1 The parameters are: amplitude 120V, frequency 50kHz, initial phase 0°, and waveform square wave. (d) Case 4: AC power supply V ac The parameters are: amplitude 100V, frequency 100kHz, initial phase 0°, and waveform square wave; AC voltage module M. bj_1 The parameters are: amplitude 120V, frequency 100kHz, initial phase 0°, and waveform square wave.

[0119] Based on the above characteristics, the output voltage regulation method applicable to Embodiment 2 includes any combination of the following steps:

[0120] Step 1: Change the AC power supply V ac The parameters include amplitude, frequency, phase, and waveform; Step 2: Change the AC voltage module M aj_1 The parameters include the amplitude, frequency, phase, and waveform of the output voltage.

[0121] Example 3

[0122] refer to Figure 5 and Figure 11 The AC-DC forward voltage conversion module C provided in this embodiment j Including diode D cj_1 Diode D cj_2 Inductor L cj Capacitor C cjAC voltage module M cj_1 and AC voltage module M cj_2 It also includes port c j_1 Port c j_2 and port c j_3 Diode D cj_1 Its anode and port c j_1 Connected, its cathode is connected to AC voltage module M cj_1 One end is connected; diode D cj_2 Its anode and port c j_2 Connected, its cathode is connected to AC voltage module M cj_2 The other end is connected; inductor L cj One end of it is simultaneously connected to AC voltage module M cj_1 The other end and AC voltage module M cj_2 One end is connected, and the other end is connected to port c. j_3 Connected; Capacitor C cj One end of it is connected to port c j_3 Connected, its other end is connected to port c j_2 Connected.

[0123] AC voltage module M cj_1 AC voltage module M outputs AC power from one end to the other. cj_2 It also outputs AC power from one end to the other. AC voltage module M cj_1 and AC voltage module M cj_2 There is a magnetic coupling relationship, and they share a transformer T. hcj Transformer T hcj It includes a primary winding, a first secondary winding, and a second secondary winding. The first and second ports of the primary winding are both AC input terminals, and the first port of the first secondary winding is connected to the AC voltage module M. cj_1 One end of the secondary winding has its second port connected to the AC voltage module M. cj_1 At the other end, the first port of its secondary second winding is connected to the AC voltage module M. cj_2 One end of the secondary winding has its second port connected to the AC voltage module M. cj_2 The other end.

[0124] Assume C j port c j_1 and port c j_2 Connect to AC power V ac port c j_3 and port c j_2 Connect the load RL; Transformer T hcj The first and second ports of the primary winding are connected to the AC power supply V. hcj via transformer T hcj After transformation, AC voltage module Mcj_1 The output voltage is v Mcj_1 AC voltage module M cj_2 The output voltage is v Mcj_2 .

[0125] For simplicity, let's further assume the AC power supply is v ac and v hcj Both are square wave AC power supplies with the same frequency and phase, and amplitudes of V respectively. ac and V hcj Capacitor C cj Large enough, capacitor voltage v Ccj The ripple is negligible; D cj_1 and D cj_2 For ideal devices. Inductance (L) cj In the continuous current mode, the steady-state operation process of Example 3 can be divided into two stages, as follows: (1) Stage 1: C j AC input voltage V cj >0 and v cj -v Mcj_1 -v Mcj_2 >0

[0126] D cj_1 Conduction, D cj_2 As of now, v ac D cj_1 M cj_1 L cj C cj Together with RL, they form a circuit, and the inductor current i Lcj Rise, L cj Energy storage;

[0127] (2) Stage 2: C j AC input voltage V cj <0 and v cj -v Mcj_1 -v Mcj_2 <0

[0128] D cj_1 As of the deadline, D cj_2 On, L cj C cj , RL, D cj_2 and M cj_2 Forming a circuit, the inductor current i Lcj Decrease, L cj Release energy.

[0129] When T hcj When the first port of the primary winding is the same as the first port of the secondary first winding and the first port of the secondary second winding, stage 1: v cj =V ac vMcj_1 =N hcj_1 ·V hcj v Mcj_2 =N hcj_2 ·V hcj Phase 2: v cj =-V ac v Mcj_1 =-N hcj_1 ·V hcj v Mcj_2 =-N hcj_2 ·V hcj Among them, N hcj_1 and N hcj_2 All are T hcj The number of turns ratio.

[0130] According to the principle of inductor volt-second balance, we can obtain:

[0131]

[0132] As can be seen from equation (4), Example 3 exhibits a pressure reduction working characteristic.

[0133] When T hcj When the first port of the primary winding is the same as the first port of the secondary winding and the second port of the secondary winding, stage 1: v cj =V ac v Mcj_1 =N hcj_1 ·V hcj v Mcj_2 =-N hcj_2 ·V hcj Phase 2: v cj =-V ac v Mcj_1 =-N hcj_1 ·V hcj v Mcj_2 =N hcj_2 ·V hcj Among them, N hcj_1 and N hcj_2 All are T hcj The number of turns ratio.

[0134]

[0135] From equation (5), we can see that: when (N) hcj_2 -N hcj_1 )·V hcj >V ac At that time, the output voltage (i.e., capacitor voltage) v of Example 3 Ccj >V ac It exhibits boost voltage operation characteristics; when (N hcj_2 -N hcj_1 )·Vhcj <V ac At that time, the output voltage (i.e., capacitor voltage) v of Example 3 Ccj <V ac It exhibits voltage reduction operating characteristics.

[0136] When T hcj When the first port of the primary winding and the second port of the first secondary winding and the first port of the second secondary winding are of the same name, stage 1: v cj =V ac v Mcj_1 =-N hcj_1 ·V hcj v Mcj_2 =N hcj_2 ·V hcj Phase 2: v cj =-V ac v Mcj_1 =N hcj_1 ·V hcj v Mcj_2 =-N hcj_2 ·V hcj Among them, N hcj_1 and N hcj_2 All are T hcj The number of turns ratio.

[0137]

[0138] From equation (6), we can see that: when (N) hcj_1 -N hcj_2 )·V hcj >V ac At that time, the output voltage (i.e., capacitor voltage) v of Example 3 Ccj >V ac It exhibits boost voltage operation characteristics; when (N hcj_1 -N hcj_2 )·V hcj <V ac At that time, the output voltage (i.e., capacitor voltage) v of Example 3 Ccj <V ac It exhibits voltage reduction operating characteristics.

[0139] When T hcj When the first port of the primary winding and the second port of the first secondary winding and the second port of the second secondary winding are of the same name, stage 1: v cj =V ac v Mcj_1 =-N hcj_1 ·V hcj v Mcj_2 =-N hcj_2 ·V hcj Phase 2: v cj=-V ac v Mcj_1 =N hcj_1 ·V hcj v Mcj_2 =N hcj_2 ·V hcj Among them, N hcj_1 and N hcj_2 All are T hcj The number of turns ratio.

[0140]

[0141] From equation (7), we can see that: when (N) hcj_1 +N hcj_2 )·V hcj >V ac At that time, the output voltage (i.e., capacitor voltage) v of Example 3 Ccj >V ac It exhibits boost voltage operation characteristics; when (N hcj_1 +N hcj_2 )·V hcj <V ac At that time, the output voltage (i.e., capacitor voltage) v of Example 3 Ccj <V ac It exhibits voltage reduction operating characteristics.

[0142] Given the AC power supply v ac and v hcj Both can be any AC power supply and AC voltage module M. hcj_1 and M hcj_2 All of them can output arbitrary alternating current, and their amplitude, frequency, phase, and waveform parameters can all be different. The corresponding steady-state operating processes include continuous current, critical, and discontinuous current modes, which those skilled in the art can analyze themselves by referring to the above, and will not be elaborated further.

[0143] AC power supply v ac Parameters, AC voltage module M hcj_1 and M hcj_2 Parameters (e.g., transformer T) hcj The relationship between the same terminal and the number of turns ratio N hcj_1 and N hcj_2 ) and AC power supply v hcj The parameters all affect the output voltage of Example 3. For example: taking L... cj =500μH, C cj =1μF, RL=25Ω. Figure 6 The output voltage block diagrams for Example 3 are given in the following four cases. (a) Case 1: AC power supply V ac Parameters: amplitude 100V, frequency 100kHz, initial phase 0°, waveform square wave; transformer Thcj The first port of the primary winding is related to the first port of the secondary winding and the second port of the secondary winding by the same name. The turns ratio N hcj_1 =1 and N hcj_2 =2; AC power supply V hcj The parameters are: amplitude 20V, frequency 100kHz, initial phase 0°, and waveform square wave. (b) Case 2: AC power supply V ac Parameters: amplitude 100V, frequency 100kHz, initial phase 0°, waveform square wave; transformer T hcj The first port of the primary winding is related to the first port of the secondary winding and the second port of the secondary winding by the same name. The turns ratio N hcj_1 =1 and N hcj_2 =2; AC power supply V hcj The parameters are: amplitude 40V, frequency 100kHz, initial phase 0°, and waveform square wave. (c) Case 3: AC power supply V ac Parameters: amplitude 100V, frequency 100kHz, initial phase 0°, waveform square wave; transformer T hcj The first port of the primary winding is related to the first port of the secondary winding and the second port of the secondary winding by the same name. The turns ratio N hcj_1 =1 and N hcj_2 =2; AC power supply V hcj The parameters are: amplitude 20V, frequency 50kHz, initial phase 0°, and waveform square wave. (d) Case 4: AC power supply V ac Parameters: amplitude 100V, frequency 100kHz, initial phase 0°, waveform square wave; transformer T hcj The first port of the primary winding is related to the first port of the secondary winding and the second port of the secondary winding by the same name. The turns ratio N hcj_1 =1 and N hcj_2 =2; AC power supply V hcj The parameters are: amplitude of 20V, frequency of 100kHz, initial phase of 180°, and waveform of square wave.

[0144] Based on the above characteristics, the output voltage regulation method applicable to Embodiment 3 includes any combination of the following steps:

[0145] Step 1: Change the AC power supply V ac The parameters include amplitude, frequency, phase, and waveform; Step 2: Change the AC voltage module M cj_1 and M cj_2 The parameters, including transformer T hcj The relationship between the same terminal and the number of turns ratio N hcj_1 and Nhcj_2 ;

[0146] Step 3: Change the AC power supply V hcj The parameters include amplitude, frequency, phase, and waveform.

[0147] Example 4

[0148] refer to Figure 7 and Figure 10 The AC-DC reverse voltage conversion module D provided in this embodiment j Including diode D dj_1 Diode D dj_2 Inductor L dj Capacitor C dj and AC voltage module M dj_1 It also includes port d j_1 Port d j_2 and port d j_3 Diode D dj_1 Its cathode and port d j_1 Connected, its anode is connected to AC voltage module M dj_1 One end is connected; diode D dj_2 Its cathode and port d j_2 Connected, its anode is connected to AC voltage module M dj_1 The other end is connected; inductor L dj One end of it is connected to AC voltage module M dj_1 One end is connected to the other end, and the other end is connected to port d. j_3 Connected; Capacitor C dj One end of it is connected to port d j_3 Connected, its other end is connected to port d j_2 Connected.

[0149] AC voltage module M dj_1 The system outputs alternating current from one end to the other, including transformer T. gdj_1 Transformer T gdj_1 It includes a primary winding and a secondary winding. The first and second ports of the primary winding are both AC input terminals. The first port of the secondary winding is connected to the AC voltage module M. dj_1 One end is connected to the AC voltage module M, and the second port of its secondary winding is connected to the AC voltage module M. dj_1 The other end is connected.

[0150] Example 4 is similar in structure and working principle to Example 1, and uses the same output voltage regulation method. The difference lies in: D in Example 4. dj_1 and D dj_2 The cathode and anode connection method is the same as in Example 1, D. aj_1 and D aj_2The cathode and anode connections are exactly opposite; the output voltage v in Example 4 Cdj The output voltage v of Example 1 Caj The polarities are opposite. That is, port d in Example 4. j_3 Voltage lower than port d j_2 Voltage, while port a of Example 1 j_3 Voltage higher than port a j_2 Voltage. Those skilled in the art can analyze this themselves by referring to Example 1, and it will not be described in detail here.

[0151] Example 5

[0152] refer to Figure 8 The AC-DC reverse voltage conversion module E provided in this embodiment j Including diode D ej_1 Diode D ej_2 Inductor L ej Capacitor C ej and AC voltage module M ej_1 It also includes port e j_1 Port e j_2 and port e j_3 Diode D ej_1 Its cathode and port e j_1 Connected, its anode is connected to AC voltage module M ej_1 One end is connected; diode D ej_2 Its cathode and port e j_2 Connected, its anode is connected to AC voltage module M ej_1 The other end is connected; inductor L ej One end of it is connected to AC voltage module M ej_1 One end is connected, and the other end is connected to port e. j_3 Connected; Capacitor C ej One end of it is connected to port e j_3 Connected, its other end is connected to port e j_2 Connected.

[0153] AC voltage module M ej_1 It can output any AC power, and its output voltage parameters include amplitude, frequency, phase, and waveform.

[0154] Example 5 is similar in structure and working principle to Example 2, and uses the same output voltage regulation method. The difference lies in: In Example 5, D... ej_1 and D ej_2 The cathode and anode connection method is the same as in Example 2, D. bj_1 and D bj_2 The cathode and anode connections are exactly opposite; the output voltage v in Example 5 Cej and the output voltage v of Example 2 CbjThe polarities are opposite. That is, port e in Example 5 j_3 Voltage lower than port e j_2 Voltage, while port b in embodiment 2 j_3 Voltage higher than port b j_2 Voltage. Those skilled in the art can analyze this themselves by referring to Example 2, and it will not be described in detail here.

[0155] Example 6

[0156] refer to Figure 9 and Figure 11 The AC-DC reverse voltage conversion module F provided in this embodiment j Including diode D fj_1 Diode D fj_2 Inductor L fj Capacitor C fj AC voltage module M fj_1 and AC voltage module M fj_2 It also includes port f j_1 port f j_2 and port f j_3 Diode D fj_1 Its cathode and port f j_1 Connected, its anode is connected to AC voltage module M fj_1 One end is connected; diode D fj_2 Its cathode and port f j_2 Connected, its anode is connected to AC voltage module M fj_2 The other end is connected; inductor L fj One end of it is simultaneously connected to AC voltage module M fj_1 The other end and AC voltage module M fj_2 One end is connected, and the other end is connected to port f. j_3 Connected; Capacitor C fj One end of it is connected to port f j_3 Connected, its other end is connected to port f j_2 Connected.

[0157] AC voltage module M fj_1 AC voltage module M outputs AC power from one end to the other. fj_2 It also outputs AC power from one end to the other. AC voltage module M fj_1 and AC voltage module M fj_2 There is a magnetic coupling relationship, and they share a transformer T. hfj Transformer T hfj It includes a primary winding, a first secondary winding, and a second secondary winding. The first and second ports of the primary winding are both AC input terminals, and the first port of the first secondary winding is connected to the AC voltage module M. fj_1 One end of the secondary winding has its second port connected to the AC voltage module M.fj_1 At the other end, the first port of its secondary second winding is connected to the AC voltage module M. fj_2 One end of the secondary winding has its second port connected to the AC voltage module M. fj_2 The other end.

[0158] Example 6 is similar in structure and working principle to Example 3, and uses the same output voltage regulation method. The difference lies in: D in Example 6. fj_1 and D fj_2 The cathode and anode connection method is the same as in Example 3, D. cj_1 and D cj_2 The cathode and anode connections are exactly opposite; the output voltage v of Example 6 Cfj and the output voltage v of Example 3 Ccj The polarities are opposite. That is, port f in Example 6 j_3 Voltage lower than port f j_2 Voltage, and port c of embodiment 3 j_3 Voltage higher than port c j_2 Voltage. Those skilled in the art can analyze this themselves by referring to Example 3, and it will not be described in detail here.

[0159] Example 7

[0160] The application circuits provided in this embodiment include cascaded AC-DC forward or reverse voltage conversion modules as described in Embodiments 1 to 6, such as input parallel / output parallel, input series / output parallel, input parallel / output series, and input series / output series.

[0161] (a) Cascaded circuit of front-end AC-DC forward voltage conversion module and rear-end AC-DC forward voltage conversion module

[0162] Post-stage AC-DC forward voltage conversion module (A) j+1 B j+1 Or C j+1 The first port (a) j+1_1 b j+1_1 or c j+1_1 ) and the preceding AC-DC forward voltage conversion module (A j B j Or C j The third port (a) j_3 b j_3 or c j_3 Connected to the subsequent AC-DC forward voltage conversion module (A) j+1 B j+1 Or C j+1 The second port (a) j_2 b j_2 or c j_2) and the preceding AC-DC forward voltage conversion module (A j B j Or C j The first port (a) j_1 b j_1 or c j_1 () are connected, and j is a positive integer.

[0163] (b) Cascaded circuit of front-end AC-DC reverse voltage converter module and rear-end AC-DC reverse voltage converter module

[0164] Post-stage AC-DC inverting voltage conversion module (D) j+1 E j+1 or F j+1 The second port (d) j+1_2 e j+1_2 or f j+1_2 ) and the preceding AC-DC inverting voltage conversion module (D j E j or F j The first port (d) j_1 e j_1 or f j_1 Connected to the subsequent AC-DC inverting voltage converter module (D) j+1 E j+1 or F j+1 The first port (d) j+1_1 e j+1_1 or f j+1_1 ) and the preceding AC-DC inverting voltage conversion module (D j E j or F j The third port (d) j_3 e j_3 or f j_3 () are connected, and j is a positive integer.

[0165] Figure 12 The given module is AC-DC inverted voltage converter module D. j and D j+1 Cascaded application circuits.

[0166] (c) Cascaded circuit of front-stage AC-DC forward voltage converter module and rear-stage AC-DC reverse voltage converter module

[0167] Post-stage AC-DC inverting voltage conversion module (D) j+1 E j+1 or F j+1 The first port (d) j+1_1 e j+1_1 or f j+1_1 ) and the preceding AC-DC forward voltage conversion module (A jB j Or C j The first port (a) j_1 b j_1 or c j_1 Connected to the subsequent AC-DC inverting voltage converter module (D) j+1 E j+1 or F j+1 The second port (d) j+1_2 e j+1_2 or f j+1_2 ) and the preceding AC-DC forward voltage conversion module (A j B j Or C j The third port (a) j_3 b j_3 or c j_3 () are connected, and j is a positive integer.

[0168] (d) Cascaded circuit of front-stage AC-DC reverse voltage converter module and rear-stage AC-DC forward voltage converter module

[0169] Post-stage AC-DC forward voltage conversion module (A) j+1 B j+1 Or C j+1 The first port (a) j+1_1 b j+1_1 or c j+1_1 ) and the preceding AC-DC inverting voltage conversion module (D j E j or F j The first port (d) j_1 e j_1 or f j_1 Connected to the subsequent AC-DC forward voltage conversion module (A) j+1 B j+1 Or C j+1 The second port (a) j+1_2 b j+1_2 or c j+1_2 ) and the preceding AC-DC inverting voltage conversion module (D j E j or F j The third port (d) j_3 e j_3 or f j_3 () are connected, and j is a positive integer.

[0170] (e) Input parallel / output parallel circuit of AC-DC forward voltage converter module or AC-DC reverse voltage converter module

[0171] First AC-DC forward voltage conversion module (A) j Bj Or C j The first port (a) j_1 b j_1 or c j_1 ) and the second AC-DC forward voltage conversion module (A j+1 B j+1 Or C j+1 The first port (a) j+1_1 b j+1_1 or c j+1_1 Connected to the first AC-DC forward voltage converter module (A) j B j Or C j The second port (a) j_2 b j_2 or c j_2 ) and the second AC-DC forward voltage conversion module (A j+1 B j+1 Or C j+1 The second port (a) j+1_2 b j+1_2 or c j+1_2 Connected to the first AC-DC forward voltage converter module (A) j B j Or C j The third port (a) j_3 b j_3 or c j_3 ) and the second AC-DC forward voltage conversion module (A j+1 B j+1 Or C j+1 The third port (a) j+1_3 b j+1_3 or c j+1_3 () are connected, where j is a positive integer;

[0172] Alternatively, the first AC-DC inverting voltage conversion module (D j E j or F j The first port (d) j_1 e j_1 or f j_1 ) and the second AC-DC inverting voltage converter module (D j+1 E j+1 or F j+1 The first port (d) j+1_1 e j+1_1 or f j+1_1 Connected to the first AC-DC reverse voltage converter module (D) j E j or F j The second port (d) j_2 ej_2 or f j_2 ) and the second AC-DC inverting voltage converter module (D j+1 E j+1 or F j+1 The second port (d) j+1_2 e j+1_2 or f j+1_2 Connected to the first AC-DC reverse voltage converter module (D) j E j or F j The third port (d) j_3 e j_3 or f j_3 ) and the second AC-DC inverting voltage converter module (D j+1 E j+1 or F j+1 The third port (d) j+1_3 e j+1_3 or f j+1_3 () are connected, and j is a positive integer.

[0173] (f) Input series / output parallel circuit of AC-DC forward voltage converter module or AC-DC reverse voltage converter module

[0174] First AC-DC forward voltage conversion module (A) j B j Or C j The second port (a) j_2 b j_2 or c j_2 ) and the second AC-DC forward voltage conversion module (A j+1 B j+1 Or C j+1 The second port (a) j+1_2 b j+1_2 or c j+1_2 Connected to the first AC-DC forward voltage converter module (A) j B j Or C j The third port (a) j_3 b j_3 or c j_3 ) and the second AC-DC forward voltage conversion module (A j+1 B j+1 Or C j+1 The third port (a) j+1_3 b j+1_3 or c j+1_3 Connected to the first AC-DC forward voltage converter module (A) j B j Or C j The first port (a)j_1 b j_1 or c j_1 ) and the second AC-DC forward voltage conversion module (A j+1 B j+1 Or C j+1 The first port (a) j+1_1 b j+1_1 or c j+1_1 ) is the AC input terminal, and j is a positive integer.

[0175] Alternatively, the first AC-DC inverting voltage conversion module (D j E j or F j The second port (d) j_2 e j_2 or f j_2 ) and the second AC-DC inverting voltage converter module (D j+1 E j+1 or F j+1 The second port (d) j+1_2 e j+1_2 or f j+1_2 Connected to the first AC-DC reverse voltage converter module (D) j E j or F j The third port (d) j_3 e j_3 or f j_3 ) and the second AC-DC inverting voltage converter module (D j+1 E j+1 or F j+1 The third port (d) j+1_3 e j+1_3 or f j+1_3 Connected to the first AC-DC reverse voltage converter module (D) j E j or F j The first port (d) j_1 e j_1 or f j_1 ) and the second AC-DC inverting voltage converter module (D j+1 E j+1 or F j+1 The first port (d) j+1_1 e j+1_1 or f j+1_1 ) is the AC input terminal, and j is a positive integer.

[0176] (g) Input parallel / output series circuit of AC-DC forward voltage converter module and AC-DC reverse voltage converter module

[0177] AC-DC forward voltage conversion module (Aj B j Or C j The first port (a) j_1 b j_1 or c j_1 ) and AC-DC inverting voltage conversion module (D j E j or F j The first port (d) j_1 e j_1 or f j_1 Connected to the AC-DC forward voltage converter module (A) j B j Or C j The second port (a) j_2 b j_2 or c j_2 ) and AC-DC inverting voltage conversion module (D j E j or F j The second port (d) j_2 e j_2 or f j_2 Connected to the AC-DC forward voltage converter module (A) j B j Or C j The third port (a) j_3 b j_3 or c j_3 The third port (d) of the AC-DC inverting voltage converter module (Dj, Ej, or Fj) j_3 e j_3 or f j_3 () is the DC output terminal;

[0178] Alternatively, an AC-DC forward voltage conversion module (A j B j Or C j The first port of ) (aj_1, b) j_1 or c j_1 ) and AC-DC inverting voltage conversion module (D j E j or F j The second port (d) j_2 e j_2 or f j_2 Connected to the AC-DC forward voltage converter module (A) j B j Or C j The second port (a) j_2 b j_2 or c j_2 ) and AC-DC inverting voltage conversion module (Dj E j or F j The first port (d) j_1 e j_1 or f j_1 Connected to the AC-DC forward voltage converter module (A) j B j Or C j The third port (a) j_3 b j_3 or c j_3 ) and AC-DC inverting voltage conversion module (D j E j or F j The third port (d) j_3 e j_3 or f j_3 () is the AC output terminal.

[0179] Figure 13 The given module is AC-DC forward voltage conversion module B. j AC-DC inverting voltage conversion module E j A circuit with parallel inputs and series outputs.

[0180] (h) Input series / output series circuit of AC-DC forward voltage converter module and AC-DC reverse voltage converter module

[0181] AC-DC forward voltage conversion module (A j B j Or C j The second port (a) j_2 b j_2 or c j_2 ) and AC-DC inverting voltage conversion module (D j E j or F j The second port (d) j_2 e j_2 or f j_2 Connected to the first port (a) of the AC-DC forward voltage conversion module (Aj, Bj, or Cj). j_1 b j_1 or c j_1 ) and AC-DC inverting voltage conversion module (D j E j or F j The first port (d) j_1 e j_1 or f j_1 The AC input terminal is the AC-DC forward voltage converter module (A). j B j Or Cj The third port (a) j_3 b j_3 or c j_3 ) and AC-DC inverting voltage conversion module (D j E j or F j The third port (d) j_3 e j_3 or f j_3 () is the DC output terminal;

[0182] Alternatively, an AC-DC forward voltage conversion module (A j B j Or C j The first port (a) j_1 b j_1 or c j_1 ) and AC-DC inverting voltage conversion module (D j E j or F j The first port (d) j_1 e j_1 or f j_1 Connected to the AC-DC forward voltage converter module (A) j B j Or C j The second port (a) j_2 b j_2 or c j_2 The second port (d) of the AC-DC inverting voltage converter module (Dj, Ej, or Fj) j_2 e j_2 or f j_2 The AC input terminal is the AC-DC forward voltage converter module (A). j B j Or C j The third port (a) j_3 b j_3 or c j_3 ) and AC-DC inverting voltage conversion module (D j E j or F j The third port (d) j_3 e j_3 or f j_3 () is the AC output terminal.

[0183] Figure 14 The given module is AC-DC forward voltage conversion module B. j AC-DC inverting voltage conversion module E j An application circuit with input series connection and output series connection.

[0184] In Example 7, each AC-DC forward or reverse voltage conversion module can share an AC voltage module with other AC-DC forward or reverse voltage conversion modules. Alternatively, any AC voltage module of each AC-DC forward or reverse voltage conversion module can share a transformer with any AC voltage module of other AC-DC forward or reverse voltage conversion modules.

[0185] The steady-state operation of each AC-DC forward or reverse voltage conversion module in Example 7 is similar to that in Examples 1 to 6. Those skilled in the art can refer to it for analysis, and it will not be described again.

[0186] Although diodes are used for rectification or freewheeling in the foregoing embodiments, those skilled in the art will understand that the diodes can also be replaced by controllable switching devices (e.g., synchronous rectifier MOSFETs). Furthermore, the AC power supply in the foregoing embodiments can be an AC-AC, DC-AC, or other power (electronic) device that outputs AC. Moreover, the AC power supply can be multiple independent or a single shared power supply. Related application circuits can also include other combinations, and these variations do not exceed the scope of protection of this invention. The embodiments described in this specification are merely examples of implementations of the inventive concept; the scope of protection of this invention should not be considered limited to the specific forms stated in the embodiments, and the scope of protection of this invention also extends to equivalent technical means that those skilled in the art can conceive of based on the inventive concept.

Claims

1. An AC-DC voltage conversion module, characterized in that, This is a forward voltage conversion module, including two diodes, one inductor, one capacitor, and one AC voltage module. It also includes three ports, among which: The first diode has its anode connected to the first port and its cathode connected to one end of the AC voltage module. The second diode has its anode connected to the second port and its cathode connected to the other end of the AC voltage module. One end of the inductor is connected to the other end of the AC voltage module, and the other end is connected to the third port; The capacitor has one end connected to the third port and the other end connected to the second port; The first port is the AC input terminal, the second port is both the AC input terminal and the DC output terminal, and the third port is the DC output terminal.

2. An AC-DC voltage conversion module, characterized in that, This is a forward voltage conversion module, including two diodes, one inductor, one capacitor, and one AC voltage module. It also includes three ports, among which: The first diode has its anode connected to the first port and its cathode connected to one end of the AC voltage module. The second diode has its anode connected to the second port and its cathode connected to the other end of the AC voltage module. The inductor has one end connected to one end of the AC voltage module and the other end connected to the third port. The capacitor has one end connected to the third port and the other end connected to the second port; The first port is the AC input terminal, the second port is both the AC input terminal and the DC output terminal, and the third port is the DC output terminal.

3. An AC-DC voltage conversion module, characterized in that, This is a forward voltage conversion module, including 2 diodes, 1 inductor, 1 capacitor, and 2 AC voltage modules, as well as 3 ports, of which: The first diode has its anode connected to the first port and its cathode connected to one end of the first AC voltage module. The second diode has its anode connected to the second port and its cathode connected to the other end of the second AC voltage module. The inductor has one end connected to both the other end of the first AC voltage module and one end of the second AC voltage module, and its other end connected to the third port. The capacitor has one end connected to the third port and the other end connected to the second port; The first port is the AC input terminal, the second port is both the AC input terminal and the DC output terminal, and the third port is the DC output terminal.

4. An AC-DC voltage conversion module, characterized in that, This is an inverting voltage converter module, comprising two diodes, one inductor, one capacitor, and one AC voltage module, as well as three ports, wherein: The first diode has its cathode connected to the first port and its anode connected to one end of the AC voltage module. The second diode has its cathode connected to the second port and its anode connected to the other end of the AC voltage module. One end of the inductor is connected to the other end of the AC voltage module, and the other end is connected to the third port; The capacitor has one end connected to the third port and the other end connected to the second port; The first port is the AC input terminal, the second port is both the AC input terminal and the DC output terminal, and the third port is the DC output terminal.

5. An AC-DC voltage conversion module, characterized in that, This is an inverting voltage converter module, comprising two diodes, one inductor, one capacitor, and one AC voltage module, as well as three ports, wherein: The first diode has its cathode connected to the first port and its anode connected to one end of the AC voltage module. The second diode has its cathode connected to the second port and its anode connected to the other end of the AC voltage module. The inductor has one end connected to one end of the AC voltage module and the other end connected to the third port. The capacitor has one end connected to the third port and the other end connected to the second port; The first port is the AC input terminal, the second port is both the AC input terminal and the DC output terminal, and the third port is the DC output terminal.

6. An AC-DC voltage conversion module, characterized in that, This is an inverting voltage converter module, comprising 2 diodes, 1 inductor, 1 capacitor, and 2 AC voltage modules, as well as 3 ports, wherein: The first diode has its cathode connected to the first port and its anode connected to one end of the first AC voltage module; The second diode has its cathode connected to the second port and its anode connected to the other end of the second AC voltage module. The inductor has one end connected to both the other end of the first AC voltage module and one end of the second AC voltage module, and its other end connected to the third port. The capacitor has one end connected to the third port and the other end connected to the second port; The first port is the AC input terminal, the second port is both the AC input terminal and the DC output terminal, and the third port is the DC output terminal.

7. The AC-DC voltage conversion module as described in any one of claims 1 to 6, characterized in that, Any one of the AC voltage modules includes one transformer, wherein: The transformer includes a primary winding and a secondary winding. The first and second ports of the primary winding are both AC input terminals. The first port of the secondary winding is connected to one end of the AC voltage module, and the second port of the secondary winding is connected to the other end of the AC voltage module.

8. The AC-DC voltage conversion module as described in any one of claims 3 and 6, characterized in that, The first AC voltage module and the second AC voltage module share one transformer, wherein: The transformer includes a primary winding, a first secondary winding, and a second secondary winding. The first and second ports of the primary winding are both AC input terminals. The first port of the first secondary winding is connected to one end of the first AC voltage module, and the second port of the first secondary winding is connected to the other end of the first AC voltage module. The first port of the second secondary winding is connected to one end of the second AC voltage module, and the second port of the second secondary winding is connected to the other end of the second AC voltage module.

9. A method for regulating the output voltage of an AC-DC voltage conversion module suitable for any one of claims 1 to 8, characterized in that, Includes any combination of the following steps: Step 1: Change the parameters of the first AC power supply connected to the AC input terminal of the AC-DC voltage conversion module; Step 2: Change the parameters of any or all of the AC voltage modules in the AC-DC voltage conversion module; Step 3: If the AC voltage module in the AC-DC voltage conversion module contains a transformer, then change the transformer parameters. Step 4: If the AC voltage module in the AC-DC voltage conversion module is connected to other AC power sources, then change the parameters of the AC power source connected to the AC voltage module.

10. The application circuit based on the AC-DC voltage conversion module according to claims 1 to 8, characterized in that, It includes at least two AC-DC voltage conversion modules, which may be cascaded, connected in parallel with inputs / parallel with outputs, connected in series with inputs / parallel with outputs, connected in parallel with inputs / series with outputs, or connected in series with inputs / series with outputs.

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