WO2015106643A1 - 无桥降压apfc电路 - Google Patents

无桥降压apfc电路 Download PDF

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Publication number
WO2015106643A1
WO2015106643A1 PCT/CN2015/070123 CN2015070123W WO2015106643A1 WO 2015106643 A1 WO2015106643 A1 WO 2015106643A1 CN 2015070123 W CN2015070123 W CN 2015070123W WO 2015106643 A1 WO2015106643 A1 WO 2015106643A1
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Prior art keywords
switch tube
inductor
diode
circuit
load
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PCT/CN2015/070123
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English (en)
French (fr)
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翦志强
司徒琴
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深圳市金宏威技术股份有限公司
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Publication of WO2015106643A1 publication Critical patent/WO2015106643A1/zh

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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
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • 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
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
    • H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
    • H02M3/1584—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load with a plurality of power processing stages connected in parallel
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00—Climate change mitigation technologies for sector-wide applications
    • Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier

Definitions

  • the present invention relates to the field of circuit technologies, and in particular, to a bridgeless buck APFC circuit.
  • the low power factor of the load R device increases the loss of the power grid and affects the normal operation of the power grid.
  • Active Power Factor Correction APFC is an advanced technical means to improve the power factor and is obtained in the power equipment. Extensive research and application.
  • the topology of the APFC can be various, such as boost, flyback, forward, etc., and the boost circuit is the most widely used.
  • the APFC circuit of Boost topology includes full-bridge rectification and boost boost circuit. The controller detects the AC side voltage and current. After multiplying, it is used as control information to modulate the PWM waveform of the switching tube output in the boost circuit to achieve voltage regulation and correct power factor. .
  • the boost circuit needs to increase the input voltage, which causes the voltage on the DC side of the back end to be high, which improves the withstand voltage level of the device.
  • the load R at the back end requires a low-voltage DC output, so that a DC-DC conversion has to be added.
  • the traditional APFC circuit requires a full-bridge rectifier circuit, while the full-bridge rectifier circuit requires four rectifier diodes, which increases the cost;
  • the traditional APFC is a two-level structure, which is not conducive to efficiency improvement
  • Embodiments of the present invention provide a bridgeless buck APFC circuit to solve the above various defects of the existing APFC circuit.
  • a bridgeless buck APFC circuit includes: a controller, a switch tube T1, a switch tube T2, a diode D1, a diode D2, an inductor L1, an inductor L2, a capacitor C, and a load R;
  • the input end of the switch tube T1 and the input end of the switch tube T2 respectively serve as positive and negative input terminals of the bridgeless buck APFC circuit, and are connected to the AC side;
  • the output end of the switch tube T1 and the diode D1 respectively The first end is connected to the first end of the inductor L1, and the output end of the switch tube T2 is respectively connected to the first end of the diode D2 and the first end of the inductor L2;
  • the second end is connected to the second end of the inductor L2, and is respectively connected to the first end of the capacitor C and the first end of the load R; the second end of the diode D1 and the second end of the diode D2 Two ends are connected, and are respectively connected to
  • the switch tube T1, the diode D1, and the inductor L1 constitute a first buck circuit
  • the switch tube T2, the diode D2, and the inductor L2 constitute a second buck circuit
  • the system can cancel the single-phase rectifier bridge and realize single-stage PFC and step-down functions to output low-voltage DC power.
  • the technical solution of the present invention can simplify the circuit level, reduce the cost, reduce the volume, and has important application value in the AC-DC conversion low-voltage DC power supply application; and solve the above various defects of the existing APFC circuit.
  • FIG. 1 is a circuit schematic diagram of a bridgeless buck APFC circuit according to an embodiment of the present invention.
  • Embodiments of the present invention provide a bridgeless buck APFC circuit to solve the above various defects of the existing APFC circuit.
  • the technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is an embodiment of the invention, but not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of the present invention.
  • an embodiment of the present invention provides a bridgeless buck APFC circuit, which may include:
  • Controller Controller
  • switch tube T1 switch tube T2, diode D1, diode D2, inductor L1, inductor L2, capacitor C, and load R;
  • the input end of the switch tube T1 and the input end of the switch tube T2 respectively serve as positive and negative input terminals of the bridgeless buck APFC circuit, and are connected to the AC side; the output ends of the switch tube T1 and the diode respectively
  • the first end of the D1 is connected to the first end of the inductor L1
  • the output end of the switch T2 is respectively connected to the first end of the diode D2 and the first end of the inductor L2
  • the second end is connected to the second end of the inductor L2, and is respectively connected to the first end of the capacitor C and the first end of the load R;
  • the second end of the diode D1 and the diode D2 The second ends are connected, and are respectively connected to the second end of the capacitor C and the second end of the load R;
  • the three input ends of the controller are respectively connected to the positive and negative input terminals and the capacitor C
  • the first end is connected, and the output end of the controller is connected to the control end of the switch tube T
  • the alternating current output to the positive and negative input terminals has a voltage of 110V to 220V and a frequency of 50 to 60 Hz.
  • the load R is the power device that causes the power factor to be low
  • T1 and T2 are the switching transistors
  • D1 and D2 are the current storage diodes
  • L1 and L2 are the power inductors of the buck circuit
  • the capacitance C is the voltage regulation across the load.
  • Controller is a single-phase bridgeless buck controller.
  • the system does not have a full-bridge rectifier circuit, and two buck circuits are used in parallel.
  • the switch tube T1, the diode D1, and the inductor L1 constitute a first buck circuit, and the switch tube T2, the diode D2, and the inductor L2.
  • Forming a second buck circuit that operates during a positive half cycle of the voltage The second buck circuit operates in the secondary half cycle of the voltage.
  • the current flow path of the positive half cycle is the switch tube T1, the inductor L1, the capacitor C, the load R, and the diode D2;
  • the current flow path of the sub-half cycle is the switch tube T2, the inductor L2, the capacitor C, the load R, and the diode. D1.
  • the inductors L1 and L2 are designed as two inductors, the volume and cost of the system are increased.
  • two inductor coil windings can be wound on one core, due to the two buck circuits.
  • the half cycle of the positive and negative half waves of the single-phase voltage waveform there is no influence on the magnetic circuit between each other, and it can work normally. In this way, combining the two inductors into one inductor can reduce the size and cost.
  • the controller is configured to output a compensation current command signal to the switch tube T1 and the switch tube T2 according to the grid side voltage and the load R current of the AC side collected through the three input ends,
  • the duty cycle of the pulse width modulation (PWM) signal output by the switching transistor T1 and the switching transistor T2 is adjusted to stabilize the output power and voltage.
  • the controller is configured to collect a network side voltage and a load R current of the AC side, and adjust a range of the network side voltage and the load R current to a working voltage range of the controller chip by using a signal conditioning circuit. Then converting the grid side voltage and the load R current into a digital signal, multiplying the grid side voltage and the load R current digital signal, extracting the phase information of the product as the PFC corrected input information; and collecting the capacitor C
  • the DC side voltage of the first end is used as feedback information of the power output; according to the input information and the feedback information, the required compensation current command signal is calculated, and the corresponding switch pulse control signal is output to the switch tube T1 and the switch Tube T2.
  • the controller uses the digital signal processor DSP as the computing core device, and calculates the required compensation current command signal according to the compensation target of the power factor correction, and according to the required compensation amount and the actual compensation amount.
  • the deviation relationship between the switches outputs a corresponding switch control pulse signal, and the drive unit power-amplifies the switch control pulse signal to drive the first and the switch tube T2, so that the finally obtained compensation current follows the compensation current command signal. In this way, the ideal current waveform is obtained on the mesh side.
  • the embodiment of the present invention proposes a bridgeless buck topology with improved power factor based on the double buck topology, and can directly output a low voltage DC power supply to meet the low voltage requirement of the back end load, and no need for DC-DC. Buck circuit.
  • the embodiment of the present invention provides a bridgeless buck APFC circuit, wherein the switch tube T1, the diode D1, the inductor L1 constitute a first buck circuit, the switch tube T2, the diode D2, and the inductor L2 constitute a second buck circuit;
  • the system can cancel the single-phase rectifier bridge, and achieve a single-stage PFC and buck function, output low-voltage DC power.
  • the technical solution of the invention can simplify the circuit level, reduce the cost, reduce the volume, and has important application value in the low-voltage DC power supply application of the AC-DC conversion.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Rectifiers (AREA)

Abstract

一种无桥降压APFC电路，包括控制器、第一开关管（T1）、第二开关管（T2）、第一二极管（D1）、第二二极管（D2）、第一电感（L1）、第二电感（L2）、电容（C）以及负载（R）。第一开关管、第一二极管以及第一电感构成第一BUCK电路，第二开关管、第二二极管以及第二电感构成第二BUCK电路。通过采用降压的双BUCK电路，实现单级PFC和降压功能，输出低压的直流电源。无桥降压APFC电路应用于AC-DC变换的低压直流电源中，可简化电路级数，降低成本，减少体积。

Description

无桥降压APFC电路 技术领域
本发明涉及电路技术领域，具体涉及一种无桥降压APFC电路。
背景技术
负载R设备过低的功率因数增加了电网的损耗，并且影响电网的正常运行，有源功率因数校正(Active Power Factor Correction，APFC)作为提高功率因数的先进技术手段，在用电设备中得到了广泛研究和应用。
APFC的拓扑可有多种，如boost、反激、正激等结构，其中boost电路得到了最广泛的应用。Boost拓扑的APFC电路包括全桥整流和boost升压电路，控制器检测交流侧电压和电流，相乘后作为控制信息调制boost电路中开关管输出的PWM波形，实现稳压和校正功率因数的目的。
实践发现，现有的Boost拓扑APFC电路存在以下缺陷：
1、boost电路需要升高输入电压，导致后端直流侧电压偏高，提高了器件的耐压等级，而往往后端的负载R需要低压的直流输出，这样不得不再加一级DC-DC变换电路；
2、传统APFC电路需要全桥整流电路，而全桥整流电路需要四只整流二极管，增加了成本；
3、传统APFC为两级结构，不利于效率提升；
4、APFC电路的主电路上没有开关管，交流电源电压直接加到后端负载R上，不利于保护。
对发明的公开
技术问题
本发明实施例提供一种无桥降压APFC电路，以解决现有的APFC电路存在的上述多种缺陷。
问题的解决方案
技术解决方案
本发明实施例提供的一种无桥降压APFC电路，包括：控制器，开关管T1，开关管T2，二极管D1，二极管D2，电感L1，电感L2，电容C，以及负载R；其中，所述开关管T1的输入端和所述开关管T2的输入端分别作为无桥降压APFC电路的正、负极输入端，与交流侧连接；所述开关管T1的输出端分别与所述二极管D1的第一端和所述电感L1的第一端连接，所述开关管T2的输出端分别与所述二极管D2的第一端和所述电感L2的第一端连接；所述电感L1的第二端和所述电感L2的第二端相连，并分别与所述电容C的第一端和所述负载R的第一端相连；所述二极管D1的第二端和所述二极管D2的第二端相连，并分别与所述电容C的第二端和所述负载R的第二端相连；所述控制器的三个输入端分别与所述正、负极输入端以及所述电容C的第一端相连，所述控制器的输出端与所述开关管T1的控制端和所述开关管T2的控制端相连。
发明的有益效果
有益效果
由上可见，本发明实施例技术方案中，开关管T1、二极管D1、电感L1构成第一buck电路，开关管T2、二极管D2、电感L2构成第二buck电路；通过采用降压的双buck电路，系统可以取消单相整流桥，并实现单级的PFC和降压功能，输出低压的直流电源。本发明技术方案在AC-DC变换的低压直流电源应用中，可以简化电路级数，降低成本，减小体积，有重要的应用价值；并解决现有的APFC电路存在的上述多种缺陷。
对附图的简要说明
附图说明
为了更清楚地说明本发明实施例技术方案，下面将对实施例和现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图。
图1是本发明实施例提供的无桥降压APFC电路的电路原理图。
发明实施例
本发明的实施方式
本发明实施例提供一种无桥降压APFC电路，以解决现有的APFC电路存在的上述多种缺陷。为了使本技术领域的人员更好地理解本发明方案，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分的实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都应当属于本发明保护的范围。
请参考图1，本发明实施例提供一种无桥降压APFC电路，可包括：
控制器(Controller)，开关管T1，开关管T2，二极管D1，二极管D2，电感L1，电感L2，电容C，以及负载R；其中，
所述开关管T1的输入端和所述开关管T2的输入端分别作为无桥降压APFC电路的正、负极输入端，与交流侧连接；所述开关管T1的输出端分别与所述二极管D1的第一端和所述电感L1的第一端连接，所述开关管T2的输出端分别与所述二极管D2的第一端和所述电感L2的第一端连接；所述电感L1的第二端和所述电感L2的第二端相连，并分别与所述电容C的第一端和所述负载R的第一端相连；所述二极管D1的第二端和所述二极管D2的第二端相连，并分别与所述电容C的第二端和所述负载R的第二端相连；所述控制器的三个输入端分别与所述正、负极输入端以及所述电容C的第一端相连，所述控制器的输出端与所述开关管T1的控制端和所述开关管T2的控制端相连。
下面进一步详细说明：
如图1，本发明实施例中，交流侧输出到所述正、负极输入端的交流电的电压为110V～220V，频率为50～60Hz。
图1中，负载R是导致功率因数变低的用电设备；T1、T2为开关管，D1、D2为蓄流二极管，L1、L2为buck电路的功率电感，电容C为负载两端的稳压和滤波电容；Controller为单相无桥降压PFC的控制器。
本发明实施例中，系统没有全桥整流电路，使用两个buck电路并联，其中，所述开关管T1、二极管D1、电感L1构成第一buck电路，所述开关管T2、二极管D2、电感L2构成第二buck电路，所述第一buck电路工作在电压的正半周期，所述 第二buck电路工作在电压的副半周期。
并且，正半周期的电流流通路径为开关管T1，电感L1，电容C，负载R，以及二极管D2；副半周期的电流流通路径为开关管T2，电感L2，电容C，负载R，以及二极管D1。
本发明实施例中，电感L1和L2如果设计成两个电感，则会增加系统的体积和成本，在本设计中，可将两个电感线圈绕组缠绕在一个磁芯上，由于两个buck电路分别在单相电压波形的正负半波的半周期内，相互之间磁路上没有影响，可以正常工作。这样，将两个电感合成为一个电感，可以减小体积和成本。
本发明实施例技术方案的工作基本机理为：
所述控制器用于根据通过所述三个输入端采集到的交流侧的网侧电压和负载R电流，通过所述输出端输出补偿电流指令信号给所述开关管T1和所述开关管T2，调节所述开关管T1和所述开关管T2输出的脉冲宽度调制(PWM)信号的占空比，以稳定输出功率和电压。
具体的，所述控制器用于采集交流侧的网侧电压和负载R电流，并经信号调理电路将所述网侧电压和负载R电流的幅值范围调整到控制器芯片的工作电压范围内，然后将所述网侧电压和负载R电流转化为数字信号，将将网侧电压和负载R电流的数字信号相乘，提取乘积的相位信息，作为PFC校正的输入信息；并采集所述电容C第一端的直流侧电压，作为电源输出的反馈信息；根据所述输入信息和反馈信息，计算所需要的补偿电流指令信号，输出相应的开关脉冲控制信号给所述开关管T1和所述开关管T2。
可见，本发明实施例中，所述控制器以数字信号处理器DSP为运算核心器件，根据功率因数校正的补偿目标计算出所需的补偿电流指令信号，并依据所需补偿量与实际补偿量之间的偏差关系，输出相应的开关控制脉冲信号，由驱动单元对该开关控制脉冲信号进行功率放大后，用于驱动第一和开关管T2，使最终得出的补偿电流时刻跟随补偿电流指令信号。这样，网侧就得到了理想的电流波形。
以上，本发明实施例基于双buck拓扑，提出了一种提高功率因数的无桥降压拓扑，能够直接输出低压的直流电源，满足后端负载的低压需求，不必再需要DC-DC 降压电路。
综上，本发明实施例提供了一种无桥降压APFC电路，其中，开关管T1、二极管D1、电感L1构成第一buck电路，开关管T2、二极管D2、电感L2构成第二buck电路；通过采用降压的双buck电路，系统可以取消单相整流桥，并实现单级的PFC和降压功能，输出低压的直流电源。本发明技术方案在AC-DC变换的低压直流电源应用中，可以简化电路级数，降低成本，减小体积，有重要的应用价值。
在上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详细描述的部分，可以参见其它实施例的相关描述。
需要说明的是，对于前述的各方法实施例，为了简单描述，故将其都表述为一系列的动作组合，但是本领域技术人员应该知悉，本发明并不受所描述动作顺序的限制，因为依据本发明，某些步骤可以采用其它顺序或者同时进行。其次，本领域技术人员也应该知悉，说明书中所描述的实施例均属于优选实施例，所涉及的动作和模块并不一定是本发明所必须的。
以上对本发明实施例所提供的一种无桥降压APFC电路进行了详细介绍，但以上实施例的说明只是用于帮助理解本发明的方法及其核心思想，不应理解为对本发明的限制。本技术领域的技术人员，依据本发明的思想，在本发明揭露的技术范围内，可轻易想到的变化或替换，都应涵盖在本发明的保护范围之内。

Claims (7)

  1. 一种无桥降压APFC电路，其特征在于，包括：
    控制器，开关管T1，开关管T2，二极管D1，二极管D2，电感L1，电感L2，电容C，以及负载R；其中，
    所述开关管T1的输入端和所述开关管T2的输入端分别作为无桥降压APFC电路的正、负极输入端，与交流侧连接；
    所述开关管T1的输出端分别与所述二极管D1的第一端和所述电感L1的第一端连接，所述开关管T2的输出端分别与所述二极管D2的第一端和所述电感L2的第一端连接；
    所述电感L1的第二端和所述电感L2的第二端相连，并分别与所述电容C的第一端和所述负载R的第一端相连；
    所述二极管D1的第二端和所述二极管D2的第二端相连，并分别与所述电容C的第二端和所述负载R的第二端相连；
    所述控制器的三个输入端分别与所述正、负极输入端以及所述电容C的第一端相连，所述控制器的输出端与所述开关管T1的控制端和所述开关管T2的控制端相连。
  2. 根据权利要求1所述的无桥降压APFC电路，其特征在于：
    所述控制器用于根据通过所述三个输入端采集到的交流侧的网侧电压和负载R电流，通过所述输出端输出补偿电流指令信号给所述开关管T1和所述开关管T2，调节所述开关管T1和所述开关管T2输出的脉冲宽度调制PWM信号的占空比，以稳定输出功率和电压。
  3. 根据权利要求2所述的无桥降压APFC电路，其特征在于：
    所述控制器具体用于采集交流侧的网侧电压和负载R电流，并经信号调理电路将所述网侧电压和负载R电流的幅值范围调整到控制器芯片的工作电压范围内，然后将所述网侧电压和负载R电流转化为数字信号，将将网侧电压和负载R电流的数字信号相乘，提取乘积的相位信息，作为PFC校正的输入信息；并采集所述电容C第一端的直流侧电压，作为电源输出的反馈信息；根据所述输入信息和 反馈信息，计算所需要的补偿电流指令信号，输出相应的开关脉冲控制信号给所述开关管T1和所述开关管T2。
  4. 根据权利要求1所述的无桥降压APFC电路，其特征在于：
    所述开关管T1、二极管D1、电感L1构成第一buck电路，所述开关管T2、二极管D2、电感L2构成第二buck电路，所述第一buck电路工作在电压的正半周期，所述第二buck电路工作在电压的副半周期。
  5. 根据权利要求5所述的无桥降压APFC电路，其特征在于：
    正半周期的电流流通路径为开关管T1，电感L1，电容C，负载R，以及二极管D2；副半周期的电流流通路径为开关管T2，电感L2，电容C，负载R，以及二极管D1。
  6. 根据权利要求1所述的无桥降压APFC电路，其特征在于：
    交流侧输出到所述正、负极输入端的交流电的电压为110V～220V，频率为50～60Hz。
  7. 根据权利要求1所述的无桥降压APFC电路，其特征在于：
    所述控制器以数字信号处理器DSP为运算核心器件，根据功率因数校正的补偿目标计算出所需的补偿电流指令信号，并依据所需补偿量与实际补偿量之间的偏差关系，输出相应的开关控制脉冲信号，由驱动单元对该开关控制脉冲信号进行功率放大后，用于驱动第一和开关管T2，使最终得出的补偿电流时刻跟随补偿电流指令信号。
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112738948A (zh) * 2020-12-29 2021-04-30 青岛易来智能科技股份有限公司 降压电路、调光电路、发光装置及发光控制方法
CN112953207A (zh) * 2021-04-22 2021-06-11 电子科技大学 变换器、双极直流微网及其变换方法
CN113037074A (zh) * 2021-02-26 2021-06-25 广州金升阳科技有限公司 无桥降压功率因素校正电路
CN113949269A (zh) * 2021-10-22 2022-01-18 西南交通大学 无桥升降压式功率因数校正变换器及控制系统
CN116365900A (zh) * 2023-03-01 2023-06-30 西南交通大学 交流输入非对称式无桥降压型pfc变换器

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103795237A (zh) * 2014-01-16 2014-05-14 深圳市金宏威技术股份有限公司 无桥降压apfc电路
CN104135806B (zh) * 2014-08-18 2017-01-11 上海贝岭股份有限公司 降压式高功率因数恒流驱动电路
CN106998606B (zh) * 2017-05-16 2019-01-04 厦门市爱维达电子有限公司 一种双管单buck LED驱动电源装置及恒流控制方法
CN107294371B (zh) * 2017-08-21 2023-07-25 国网上海市电力公司 一种基于igbt模块的单电感无桥apfc电路
CN110474528A (zh) * 2019-08-16 2019-11-19 杰华特微电子（杭州）有限公司 双电感无桥升压电路的控制电路及控制方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6411535B1 (en) * 2001-03-29 2002-06-25 Emc Corporation Power factor correction circuit with integral bridge function
CN1967994A (zh) * 2006-10-23 2007-05-23 南京航空航天大学 双向交流斩波器
CN102946196A (zh) * 2012-12-03 2013-02-27 杭州士兰微电子股份有限公司 高功率因数恒流驱动电路及恒流装置
CN202906843U (zh) * 2012-11-02 2013-04-24 庹元科 单周控制的双降压式半桥、全桥开关功率放大器
CN103795237A (zh) * 2014-01-16 2014-05-14 深圳市金宏威技术股份有限公司 无桥降压apfc电路

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5932995A (en) * 1998-03-03 1999-08-03 Magnetek, Inc. Dual buck converter with coupled inductors
CN100536306C (zh) * 2007-12-21 2009-09-02 哈尔滨工业大学 输入连续可调的无桥Buck-Boost PFC变换器
JP5337138B2 (ja) * 2010-12-10 2013-11-06 株式会社日立製作所 電源装置及びそれを用いたｌｅｄ照明器具、ハードディスク装置
CN103227574A (zh) * 2013-04-09 2013-07-31 华南理工大学 一种降压和升降压切换工作的无桥pfc变换器
CN103227564A (zh) * 2013-05-07 2013-07-31 杭州电子科技大学 无桥正激功率因素校正装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6411535B1 (en) * 2001-03-29 2002-06-25 Emc Corporation Power factor correction circuit with integral bridge function
CN1967994A (zh) * 2006-10-23 2007-05-23 南京航空航天大学 双向交流斩波器
CN202906843U (zh) * 2012-11-02 2013-04-24 庹元科 单周控制的双降压式半桥、全桥开关功率放大器
CN102946196A (zh) * 2012-12-03 2013-02-27 杭州士兰微电子股份有限公司 高功率因数恒流驱动电路及恒流装置
CN103795237A (zh) * 2014-01-16 2014-05-14 深圳市金宏威技术股份有限公司 无桥降压apfc电路

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"Bridgeless BUCK Topology LED Light Based on BP Series", BEST LED PRODUCTS, vol. 201304, 2 May 2013 (2013-05-02), pages 1 - 2 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112738948A (zh) * 2020-12-29 2021-04-30 青岛易来智能科技股份有限公司 降压电路、调光电路、发光装置及发光控制方法
CN113037074A (zh) * 2021-02-26 2021-06-25 广州金升阳科技有限公司 无桥降压功率因素校正电路
CN112953207A (zh) * 2021-04-22 2021-06-11 电子科技大学 变换器、双极直流微网及其变换方法
CN113949269A (zh) * 2021-10-22 2022-01-18 西南交通大学 无桥升降压式功率因数校正变换器及控制系统
CN113949269B (zh) * 2021-10-22 2023-05-30 西南交通大学 无桥升降压式功率因数校正变换器及控制系统
CN116365900A (zh) * 2023-03-01 2023-06-30 西南交通大学 交流输入非对称式无桥降压型pfc变换器
CN116365900B (zh) * 2023-03-01 2023-11-03 西南交通大学 交流输入非对称式无桥降压型pfc变换器

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