CN105429452A - Common-mode rejection dual-Boost bridgeless PFC converter - Google Patents
Common-mode rejection dual-Boost bridgeless PFC converter Download PDFInfo
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
- H02M1/4208—Arrangements for improving power factor of AC input
- H02M1/4233—Arrangements for improving power factor of AC input using a bridge converter comprising active switches
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
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- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
本发明公开一种共模抑制双Boost无桥PFC变换器，包括两个电感、两个IGBT、四个二极管和三个电容，第一电感一端与输入电压一端、第一电容的一端连接，第一电感另一端与第一IGBT的集电极、第二IGBT的发射极、第一二极管阳极、第三二极管阴极连接；第二电感的一端与输入电压另一端、第二电容一端连接，第二电感的另一端与第一IGBT的发射极、第二IGBT的集电极、第二二极管阳极、第四二极管阴极连接；第三电容正极与第一二极管阴极、第二二极管阴极、负载一端连接，第三电容负极与第三二极管阳极、第四二极管阳极、第一电容的另一端、第二电容的另一端、负载的另一端连接。本发明电路结构简单，损耗低、效率高。
The invention discloses a common mode suppression double Boost bridgeless PFC converter, which comprises two inductors, two IGBTs, four diodes and three capacitors, one end of the first inductor is connected to one end of the input voltage and one end of the first capacitor, and the second The other end of an inductor is connected to the collector of the first IGBT, the emitter of the second IGBT, the anode of the first diode, and the cathode of the third diode; one end of the second inductor is connected to the other end of the input voltage and one end of the second capacitor , the other end of the second inductor is connected to the emitter of the first IGBT, the collector of the second IGBT, the anode of the second diode, and the cathode of the fourth diode; the anode of the third capacitor is connected to the cathode of the first diode, the cathode of the second The cathodes of the two diodes are connected to one end of the load, and the cathode of the third capacitor is connected to the anode of the third diode, the anode of the fourth diode, the other end of the first capacitor, the other end of the second capacitor, and the other end of the load. The invention has simple circuit structure, low loss and high efficiency.
Description
技术领域 technical field
本发明涉及AC/DC变换领域，尤其涉及一种共模抑制双Boost无桥功率因数校正电路。 The invention relates to the field of AC/DC conversion, in particular to a common mode suppression dual Boost bridgeless power factor correction circuit.
背景技术 Background technique
目前大量的使用桥式不控整流不仅给电网造成了严重的谐波污染，而且交流侧功率因数的偏低也造成了电能的浪费。功率因数校正技术能够实现交流侧电流跟踪交流侧电压，可以提高交流侧的功率因数。 At present, a large number of uncontrolled bridge rectifiers have not only caused serious harmonic pollution to the power grid, but also caused a waste of electric energy due to the low power factor of the AC side. The power factor correction technology can realize the AC side current to track the AC side voltage, and can improve the power factor of the AC side.
传统的Boost型PFC电路由于整流桥的存在造成整机的效率偏低。为了提高转换效率，PFC已经从传统的有桥PFC发展到无桥PFC。但目前广泛研究的无桥PFC电路通常共模干扰比较大，而且效率也不是非常高。 Due to the existence of the rectifier bridge in the traditional Boost PFC circuit, the efficiency of the whole machine is low. In order to improve conversion efficiency, PFC has been developed from traditional bridged PFC to bridgeless PFC. But the bridgeless PFC circuit widely studied at present usually has relatively large common-mode interference, and the efficiency is not very high.
为了解决上述的问题，本发明提出了一种共模抑制双Boost无桥PFC变换器。 In order to solve the above problems, the present invention proposes a common-mode suppression dual Boost bridgeless PFC converter.
发明内容 Contents of the invention
针对现有PFC电路功率损耗大、效率偏低及现有无桥PFC电路共模干扰大等问题，本发明的目的在于一种共模抑制双Boost无桥PFC变换器，能降低电路损耗，抑制共模干扰。 Aiming at problems such as large power loss and low efficiency of the existing PFC circuit and large common-mode interference of the existing bridgeless PFC circuit, the purpose of the present invention is a common-mode suppressed dual Boost bridgeless PFC converter, which can reduce circuit loss and suppress common mode interference.
为了达到以上所述目的，本发明采用如下技术方案。 In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions.
一种共模抑制双Boost无桥PFC变换器，由两个电感、两个不带反并联二极管的IGBT、四个二极管、三个电容组成：第一电感的一端分别与输入交流电压源的一端、第一电容的一端连接，第一电感的另一端分别与第一IGBT的集电极、第二IGBT的发射极、第一二极管的阳极、第三二极管的阴极连接；第二电感的一端分别与输入交流电压源的另一端、第二电容的一端连接，第二电感的另一端分别与第一IGBT的发射极、第二IGBT的集电极、第二二极管的阳极、第四二极管的阴极连接；第三电容的正极分别与第一二极管的阴极、第二二极管的阴极、负载的一端连接，第三电容的负极分别与第三二极管的阳极、第四二极管的阳极、第一电容的另一端、第二电容的另一端、负载的另一端连接。 A common-mode suppression dual Boost bridgeless PFC converter, consisting of two inductors, two IGBTs without anti-parallel diodes, four diodes, and three capacitors: one end of the first inductor is connected to one end of the input AC voltage source , one end of the first capacitor is connected, and the other end of the first inductor is respectively connected to the collector of the first IGBT, the emitter of the second IGBT, the anode of the first diode, and the cathode of the third diode; the second inductor One end of the input AC voltage source is connected to the other end of the second capacitor, and the other end of the second inductor is respectively connected to the emitter of the first IGBT, the collector of the second IGBT, the anode of the second diode, and the second capacitor. The cathodes of the four diodes are connected; the anode of the third capacitor is respectively connected to the cathode of the first diode, the cathode of the second diode, and one end of the load, and the cathode of the third capacitor is respectively connected to the anode of the third diode. , the anode of the fourth diode, the other end of the first capacitor, the other end of the second capacitor, and the other end of the load are connected.
本发明采用不带反并联二极管的IGBT，可以进一步减少损耗。第一电容和第二电容均为无极性电容，用于消除电路的共模干扰，并不影响电路的结构。输入交流电压源的两侧与功率地之间分别增加第一电容和第二电容，第一电容和第二电容在功率地与输入交流电压源之间增加了一路高频电路通道，消弱了共模干扰。第三电容为有极性电容且足够大，能够稳定第三电容两端的直流电压，输出直流电压等于第三电容两端的直流电压。 The invention adopts the IGBT without the anti-parallel diode, which can further reduce the loss. Both the first capacitor and the second capacitor are non-polar capacitors, which are used to eliminate common-mode interference of the circuit without affecting the structure of the circuit. The first capacitor and the second capacitor are respectively added between the two sides of the input AC voltage source and the power ground. The first capacitor and the second capacitor add a high-frequency circuit channel between the power ground and the input AC voltage source, weakening the common mode interference. The third capacitor is polarized and large enough to stabilize the DC voltage at both ends of the third capacitor, and the output DC voltage is equal to the DC voltage at both ends of the third capacitor.
当输入交流电压源在正半周时，第一IGBT的集电极和发射极之间承受正向电压，通过给定栅极信号可以控制它的导通和关断，而第二IGBT的集电极和发射极之间承受反向电压而关断；当工作在交流正半周期时，交流电压源、第一电感、第二电感、第一IGBT、第一二极管和第四二极管、第三电容共同组成一个Boost电路。 When the input AC voltage source is in the positive half cycle, the collector and emitter of the first IGBT bear a forward voltage, and its turn-on and turn-off can be controlled by a given gate signal, while the collector and emitter of the second IGBT The emitters are turned off by receiving reverse voltage; when working in the positive half cycle of AC, the AC voltage source, the first inductor, the second inductor, the first IGBT, the first diode and the fourth diode, the first The three capacitors together form a Boost circuit.
当输入交流电压源在负半周时，第二IGBT的集电极和发射极之间承受正向电压，通过给定栅极信号可以控制它的导通和关断，而第一IGBT的集电极和发射极之间承受反向电压而关断；当工作在交流负半周期时，交流电压源、第一电感、第二电感、第二IGBT、第二二极管和第三二极管、电容共同组成另一个Boost电路。 When the input AC voltage source is in the negative half cycle, the collector and emitter of the second IGBT bear a forward voltage, and its turn-on and turn-off can be controlled by a given gate signal, while the collector and emitter of the first IGBT The emitters are turned off due to reverse voltage; when working in the negative half cycle of AC, the AC voltage source, the first inductor, the second inductor, the second IGBT, the second diode and the third diode, and the capacitor Together they form another Boost circuit.
与现有技术相比，本发明具有如下优点和有益效果： Compared with the prior art, the present invention has the following advantages and beneficial effects:
1、电路结构简单 1. The circuit structure is simple
本发明采用两个不带反并联二极管的IGBT分别工作在输入交流电压源的正负半周，每个半周可以视为一个Boost电路。 The present invention adopts two IGBTs without anti-parallel diodes to respectively work on the positive and negative half cycles of the input AC voltage source, and each half cycle can be regarded as a Boost circuit.
2、损耗低、效率高 2. Low loss and high efficiency
本发明采用不带反并联二极管的IGBT，在电感充电回路中只有一个开关器件导通，省去了整流桥等，都降低或减少了损耗，提升了整机传输效率。 The present invention adopts the IGBT without the anti-parallel diode, only one switch device is turned on in the inductance charging circuit, and the rectifier bridge and the like are omitted, and the loss is reduced, and the transmission efficiency of the whole machine is improved.
3、共模干扰抑制效果好 3. Good common mode interference suppression effect
本发明与传统的无桥BoostPFC电路相比，在输入交流电压源的两侧与功率地之间分别增加一个电容，使功率地与输入电源之间增加了一路高频电路通道，消弱了共模干扰。 Compared with the traditional bridgeless BoostPFC circuit, the present invention adds a capacitor between both sides of the input AC voltage source and the power ground, so that a high-frequency circuit channel is added between the power ground and the input power source, and the common Mode interference.
附图说明 Description of drawings
图1是本发明的一种共模抑制双Boost无桥PFC变换器结构图； Fig. 1 is a kind of common mode suppression double Boost bridgeless PFC converter structural diagram of the present invention;
图2a、图2b分别是图1所示电路在输入交流电压正半周时第一IGBT管开通和关断时的工作示意图； Fig. 2a and Fig. 2b are the working schematic diagrams of the circuit shown in Fig. 1 when the first IGBT tube is turned on and turned off when the input AC voltage is in the positive half cycle;
图3a、图3b分别是图1所示电路在输入交流电压负半周时第二IGBT管开通和关断时的工作示意图； Fig. 3a and Fig. 3b are schematic diagrams of the circuit shown in Fig. 1 when the second IGBT tube is turned on and turned off when the input AC voltage is in the negative half cycle;
图4是仿真得到交流侧输入交流电压与电流的波形图； Fig. 4 is the waveform diagram of the input AC voltage and current of the AC side obtained by simulation;
图5是仿真得到直流侧输出直流电压的波形图。 FIG. 5 is a waveform diagram of the output DC voltage of the DC side obtained through simulation.
具体实施方式 detailed description
以下结合实施例及附图对本发明作进一步详细的描述说明，但本发明的实施方式不限于此。需指出的是，以下若有未特别详细说明之过程或参数，均是本领域技术人员可参照现有技术实现的。 The present invention will be described in further detail below in conjunction with the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto. It should be pointed out that, if there are any processes or parameters that are not specifically described in detail below, those skilled in the art can refer to the prior art.
如图1所示，一种共模抑制双Boost无桥PFC变换器由两个电感(L1-L2)、两个不带反并联二极管的IGBT(S1-S2)、四个二极管(D1-D4)、三个电容(C1-C3)组成：第一电感L1的一端分别与输入交流电压源Vin的一端、第一电容C1的一端连接，第一电感L1的另一端分别与第一IGBTS1的集电极、第二IGBTS2的发射极、第一二极管D1的阳极、第三二极管D3的阴极连接；第二电感L2的一端分别与输入交流电压源Vin的另一端、第二电容C2的一端连接，第二电感L2的另一端分别与第一IGBTS1的发射极、第二IGBTS2的集电极、第二二极管D2的阳极、第四二极管D4的阴极连接；第三电容C3的正极分别与第一二极管D1的阴极、第二二极管D2的阴极、负载R的一端连接，第三电容C3的负极分别与第三二极管D3的阳极、第四二极管D4的阳极、第一电容C1的另一端、第二电容C2的另一端、负载R的另一端连接。 As shown in Figure 1, a common mode suppression dual Boost bridgeless PFC converter consists of two inductors (L1-L2), two IGBTs without anti-parallel diodes (S1-S2), four diodes (D1-D4 ), three capacitors (C1-C3): one end of the first inductor L1 is respectively connected to one end of the input AC voltage source Vin and one end of the first capacitor C1, and the other end of the first inductor L1 is respectively connected to the set of the first IGBTS1 electrode, the emitter of the second IGBTS2, the anode of the first diode D1, and the cathode of the third diode D3; one end of the second inductance L2 is connected to the other end of the input AC voltage source Vin and the One end is connected, and the other end of the second inductor L2 is respectively connected to the emitter of the first IGBTS1, the collector of the second IGBTS2, the anode of the second diode D2, and the cathode of the fourth diode D4; the third capacitor C3 The anode is respectively connected to the cathode of the first diode D1, the cathode of the second diode D2, and one end of the load R, and the cathode of the third capacitor C3 is respectively connected to the anode of the third diode D3 and the fourth diode D4 The anode, the other end of the first capacitor C1, the other end of the second capacitor C2, and the other end of the load R are connected.
如图2a~2b，当输入交流电压源Vin工作在正半周时，第一IGBTS1的集电极和发射极之间承受正向电压，通过给定栅极信号可以控制它的导通和关断，而第二IGBTS2的集电极和发射极之间承受反向电压而关断；当工作在交流正半周期时，交流电压源Vin、第一电感L1、第二电感L2、第一IGBTS1、第一二极管D1和第四二极管D4、第三电容C3共同组成一个Boost电路。当控制第一IGBT管S1导通时，输入交流电压源Vin对第一电感L1和第二电感L2正向进行充电储能，第三电容C3对负载R放电。当控制第一IGBT管S1关断时，输入交流电压源Vin、第一电感L1、第二电感L2、第一二极管D1和第四二极管D4、第三电容C3和负载R形成一个回路，此时第三电容C3进行充电。根据输出直流电压U0的要求调整第一IGBT管S1的导通和关断时间。 As shown in Figure 2a~2b, when the input AC voltage source Vin is working in the positive half cycle, the collector and emitter of the first IGBTS1 bear a forward voltage, and its turn-on and turn-off can be controlled by a given gate signal. The collector and emitter of the second IGBTS2 are turned off due to the reverse voltage; when working in the AC positive half cycle, the AC voltage source Vin, the first inductor L1, the second inductor L2, the first IGBTS1, the first The diode D1, the fourth diode D4 and the third capacitor C3 together form a Boost circuit. When the first IGBT tube S1 is controlled to be turned on, the input AC voltage source Vin charges and stores energy in the forward direction of the first inductor L1 and the second inductor L2, and the third capacitor C3 discharges the load R. When controlling the first IGBT tube S1 to turn off, the input AC voltage source Vin, the first inductor L1, the second inductor L2, the first diode D1 and the fourth diode D4, the third capacitor C3 and the load R form a At this time, the third capacitor C3 is charged. The turn-on and turn-off times of the first IGBT tube S1 are adjusted according to the requirements of the output DC voltage U0.
如图3a~3b，当输入交流电压源Vin工作在负半周时，第二IGBTS2的集电极和发射极之间承受正向电压，通过给定栅极信号可以控制它的导通和关断，而第一IGBTS1的集电极和发射极之间承受反向电压而关断；当工作在交流负半周期时，交流电压源Vin、第一电感L1、第二电感L2、第二IGBTS2、第二二极管D2和第三二极管D3、第三电容C3共同组成另一个Boost电路。当控制第二IGBTS2导通时，输入交流电压源Vin对第一电感L1和第二电感L2反向进行充电储能，第三电容C3对负载R放电。当控制第二IGBT管S2关断时，输入交流电压源Vin、第一电感L1、第二电感L2、第二二极管D2和第三二极管D3、第三电容C3和负载R形成一个回路，此时第三电容C3进行充电。根据输出直流电压U0的要求调整第二IGBTS2的导通和关断时间。 As shown in Figure 3a~3b, when the input AC voltage source Vin is working in the negative half cycle, the collector and emitter of the second IGBTS2 bear a forward voltage, and its turn-on and turn-off can be controlled by a given gate signal, The collector and emitter of the first IGBTS1 are turned off due to the reverse voltage; when working in the negative half cycle of AC, the AC voltage source Vin, the first inductor L1, the second inductor L2, the second IGBTS2, the second The diode D2, the third diode D3 and the third capacitor C3 jointly form another Boost circuit. When the second IGBTS2 is controlled to be turned on, the input AC voltage source Vin reversely charges the first inductor L1 and the second inductor L2 to store energy, and the third capacitor C3 discharges the load R. When the second IGBT tube S2 is controlled to turn off, the input AC voltage source Vin, the first inductor L1, the second inductor L2, the second diode D2 and the third diode D3, the third capacitor C3 and the load R form a At this time, the third capacitor C3 is charged. The turn-on and turn-off times of the second IGBTS2 are adjusted according to the requirements of the output DC voltage U0.
如图4，仿真参数为：输入交流电源Vin=220V/50HZ，电感L1=L2=1.5mH，输出功率Pout=1kW，第三电容C3=1000μF，第一电容C1=第二电容C2=3.5nF，输出直流电压Uo=400V，IGBT开关频率fs=50HZ，IGBT选用英飞凌的FGW40N120H。实验验证本发明交流侧输入电流跟踪输入电压，可实现单位功率因数运行，电流谐波小。 As shown in Figure 4, the simulation parameters are: input AC power Vin=220V/50HZ, inductance L1=L2=1.5mH, output power Pout=1kW, third capacitor C3=1000μF, first capacitor C1=second capacitor C2=3.5nF , Output DC voltage Uo=400V, IGBT switching frequency fs=50HZ, IGBT uses FGW40N120H of Infineon. Experiments verify that the input current on the AC side of the invention tracks the input voltage, can realize unit power factor operation, and has small current harmonics.
如图5，在同样的实验参数下，得到直流侧输出电压稳定，纹波小。 As shown in Figure 5, under the same experimental parameters, the DC side output voltage is stable and the ripple is small.
本领域技术人员可以在不违背本发明的原理和实质的前提下对本具体实施例做出各种修改或补充或者采用类似的方式替代，但是这些改动均落入本发明的保护范围。因此本发明技术范围不局限于上述实施例。 Those skilled in the art can make various modifications or supplements to this specific embodiment or replace it in a similar manner without departing from the principle and essence of the present invention, but these modifications all fall within the protection scope of the present invention. Therefore, the technical scope of the present invention is not limited to the above-mentioned embodiments.
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| CN111669066A (en) * | 2020-04-16 | 2020-09-15 | 山西大学 | A bridgeless dual-boost power factor correction rectifier optimized for freewheeling in auxiliary loop |
| CN111934568A (en) * | 2020-04-16 | 2020-11-13 | 山西大学 | Bridgeless double-Boost power factor correction rectifier capable of alternately assisting current conversion up and down |
| CN111934567A (en) * | 2020-04-16 | 2020-11-13 | 山西大学 | Bridgeless double-Boost power factor correction rectifier for left-right alternate auxiliary commutation |
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| CN101635528A (en) * | 2009-08-28 | 2010-01-27 | 南京航空航天大学 | Forward single-stage isolated inverter |
| CN102751861A (en) * | 2011-04-21 | 2012-10-24 | 艾默生网络能源系统北美公司 | Bridgeless power factor correction circuit |
| CN205212694U (en) * | 2015-12-20 | 2016-05-04 | 华南理工大学 | Two boost of common mode rejection do not have bridge PFC converter |
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| CN102751861A (en) * | 2011-04-21 | 2012-10-24 | 艾默生网络能源系统北美公司 | Bridgeless power factor correction circuit |
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| CN111669066A (en) * | 2020-04-16 | 2020-09-15 | 山西大学 | A bridgeless dual-boost power factor correction rectifier optimized for freewheeling in auxiliary loop |
| CN111934568A (en) * | 2020-04-16 | 2020-11-13 | 山西大学 | Bridgeless double-Boost power factor correction rectifier capable of alternately assisting current conversion up and down |
| CN111934567A (en) * | 2020-04-16 | 2020-11-13 | 山西大学 | Bridgeless double-Boost power factor correction rectifier for left-right alternate auxiliary commutation |
| CN111934568B (en) * | 2020-04-16 | 2021-11-19 | 山西大学 | Bridgeless double-Boost power factor correction rectifier capable of alternately assisting current conversion up and down |
| CN111934567B (en) * | 2020-04-16 | 2021-11-19 | 山西大学 | Bridgeless double-Boost power factor correction rectifier for left-right alternate auxiliary commutation |
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