WO2021227407A1 - 一种面向新能源应用的直流电能生成电路 - Google Patents

一种面向新能源应用的直流电能生成电路 Download PDF

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WO2021227407A1
WO2021227407A1 PCT/CN2020/128360 CN2020128360W WO2021227407A1 WO 2021227407 A1 WO2021227407 A1 WO 2021227407A1 CN 2020128360 W CN2020128360 W CN 2020128360W WO 2021227407 A1 WO2021227407 A1 WO 2021227407A1
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circuit
signal
generation circuit
voltage
power generation
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PCT/CN2020/128360
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English (en)
French (fr)
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李庆先
向德
刘良江
朱宪宇
王晋威
熊婕
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湖南省计量检测研究院
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Publication of WO2021227407A1 publication Critical patent/WO2021227407A1/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
    • 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
    • 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
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/06—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode
    • 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
    • H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
    • H02M1/007—Plural converter units in cascade

Definitions

  • This application relates to the fields of power electronics technology and AC/DC conversion, and more specifically, to a DC power generation circuit oriented to new energy applications.
  • DC power generation devices In many new energy applications, such as the power supply of new energy vehicles, AC power needs to be converted into DC power to supply power to the new energy vehicles.
  • DC power generation devices are required to work within the voltage range of 120V-280V.
  • the rectifier bridge is directly used to generate the DC power from the alternating current, but the output voltage range of the rectifier bridge is still very large, and the selection and optimization of the downstream power devices are not used.
  • this application proposes a DC power generation circuit for new energy applications to reduce the output voltage range of the DC power generation circuit, and solves the problem that the large output voltage range of the DC power generation circuit in the prior art is not conducive to Technical issues of the selection and optimization of downstream power devices.
  • This application provides a DC power generation circuit for new energy applications, including: a rectifier circuit, a first switch tube, a second switch tube, a first inductor, a first capacitor, and a control circuit.
  • the rectifier circuit is used to receive input. AC voltage, the output high potential end of the rectifier circuit is connected to the first end of the first switch tube, the second end of the first switch tube is connected to one end of the first inductor, and the other end of the first inductor One end is the output high potential end of the DC power generation circuit, the first end of the second switch tube is connected to the common end of the first switch tube and the first inductor, and the second end of the second switch tube is The terminal is the output low potential terminal of the DC power generation circuit, the first capacitor is coupled to the output terminal of the DC power generation circuit, and the control circuit is used to control the first switch tube and the second switch tube When the input AC voltage is in the high-voltage range, the first switching tube and the second switching tube work in the PWM state, and when the input AC voltage
  • the control circuit includes a first enable circuit, a PWM signal generation circuit, and a first circuit, and the first enable signal is used to generate a first enable signal according to an input voltage sampling signal that characterizes the input AC voltage.
  • An enable signal, the PWM signal generating circuit is used to generate a first PWM signal according to an output voltage sampling signal that characterizes the output voltage of the direct current electric energy generating circuit, the first circuit is used to generate a first signal, and the control circuit is used according to The first enable signal selects the first PWM signal or the first signal to control the working state of the first switch tube and the second switch tube.
  • the PWM signal generating circuit is enabled, and the control signal controls the conduction of the first switching tube and the second switching tube according to the first PWM signal.
  • the first circuit is enabled, and the control circuit controls the on and off of the first switch tube and the second switch tube according to the first signal Off.
  • the first enable signal output by the first enable circuit when the input AC voltage is in the high-voltage range, the first enable signal output by the first enable circuit is valid, and when the input AC voltage is in the low-voltage range, the first enable signal The first enable signal output by the circuit is invalid.
  • the PWM signal generating circuit includes an error amplifier and a comparator, a first input of the error amplifier receives the output voltage sampling signal, a second input of the error amplifier receives a reference signal, and the error amplifier outputs The output terminal of the comparator outputs a compensation signal, the difference between the compensation signal and the ramp signal is input to the positive input terminal of the comparator, the negative input terminal of the comparator receives a current sampling signal representing the inductor current, and the output terminal of the comparator outputs the The first PWM signal.
  • the first switching tube and the second switching tube work in the PWM state
  • the first switching tube and the second switching tube work complementarily.
  • the first signal output by the first circuit is a high-level signal.
  • the first enable signal is valid at a high level, and the first enable signal is invalid at a low level.
  • control circuit includes a first sampling circuit and a second sampling circuit.
  • the first sampling circuit receives the input AC voltage and outputs an input voltage sampling signal
  • the second sampling circuit receives the DC power. It can generate the output voltage of the circuit and output the output voltage sampling signal.
  • the rectifier circuit is a full-bridge rectifier circuit and a half-bridge rectifier circuit.
  • the DC power generation circuit further includes a driving circuit for driving the first switch tube and the second switch according to the first PWM signal or the first signal, respectively Tube.
  • the technical solution of the present application has the following advantages: the DC power generation circuit for new energy applications of the present application, when the input AC voltage is in the high-voltage range, the first switch tube and the second switch tube The two switching tubes work in the PWM state.
  • the first switching tube, the second switching tube, the first inductor, and the first capacitor form a buck topology, and the output voltage of the rectifier circuit is reduced to obtain the The output voltage of the DC power generation circuit; when the input AC voltage is in the low voltage range, the first switch tube is turned on, the second switch tube is turned off, and the output voltage of the rectifier circuit is directly used as DC power generation
  • the output voltage of the circuit is such that when the input AC voltage is in the high-voltage range and in the low-voltage range, the output voltage of the AC-DC voltage is close.
  • the DC power generation circuit described in the present application reduces the output voltage range of the DC power generation circuit, facilitates optimization and selection of downstream power devices, and solves the problem that the large output voltage range of the prior art DC power generation circuit is not conducive to There are obvious advantages in the selection and optimization of the power device of the later stage, especially in the application of new energy.
  • FIG. 1 is a circuit diagram of an embodiment of a DC power generation circuit for new energy applications in this application
  • Fig. 2 is a circuit diagram of an embodiment of the control circuit of the application
  • Fig. 3 is a circuit diagram of an embodiment of a PWM signal generating circuit of the present application.
  • Fig. 1 illustrates a circuit diagram of an embodiment of a DC power generation circuit for new energy applications in the present application.
  • the DC power generation circuit for new energy applications includes a rectifier circuit 1, a first switch tube M1, a second switch tube M2, a first inductor L1, a first capacitor C1, and a control circuit 2.
  • the rectifier circuit 1 is used for receiving Input AC voltage Vin, the output high potential end of the rectifier circuit 1 is connected to the first end of the first switch tube M1, and the second end of the first switch tube M1 is connected to one end of the first inductor L1, so The other end of the first inductor L1 is the output high potential end of the DC power generation circuit, and the first end of the second switch tube M2 is connected to the common end of the first switch tube M1 and the first inductor L1 , The second terminal of the second switch tube M2 is the output low potential terminal of the DC power generation circuit, the first capacitor C1 is coupled to the output terminal of the DC power generation circuit, and the control circuit 2 uses To control the switching states of the first switching tube M1 and the second switching tube M2, so that: when the input AC voltage Vin is in the high-voltage range, the first switching tube M1 and the second switching tube M2 work In the PWM state, when the input AC voltage Vin is in the low voltage range, the first switching tube M1 is turned on, and the second switching tube
  • the high voltage range is the input AC voltage Vin in the range of 200V-280V, and the voltage range is the input AC voltage Vin in the range of 100V-200V.
  • the output terminal of the DC power generation circuit is connected to an isolation converter to drive a power supply or electrical equipment for isolation.
  • the rectifier circuit is a full-bridge rectifier circuit and a half-bridge rectifier circuit.
  • the first switching tube M1 and the second switching tube M2 work in the PWM state.
  • the The first switching tube M1, the second switching tube M2, the first inductor L1, and the first capacitor C1 form a buck topology, and the output voltage of the rectifier circuit is reduced to obtain the output of the DC power generation circuit Voltage Vout;
  • the first switch tube M1 is turned on, the second switch tube M2 is turned off, and the output voltage of the rectifier circuit is directly used as the direct current power generation circuit
  • the output voltage Vout is such that when the input AC voltage Vin is in the high voltage range and the low voltage range, the output voltage Vout of the AC-DC voltage is close.
  • the DC power generation circuit described in the present application reduces the output voltage range of the DC power generation circuit, facilitates optimization and selection of downstream power devices, and solves the problem that the large output voltage range of the prior art DC power generation circuit is not conducive to Technical issues of the selection and optimization of downstream power devices.
  • Fig. 2 is a circuit diagram of an embodiment of the control circuit of the present application.
  • the control circuit includes a first enabling circuit, a PWM signal generating circuit, and a first circuit.
  • the first enabling signal is used to generate a first enabling signal Ven1 according to an input voltage sampling signal Vs that characterizes the input AC voltage Vin.
  • the PWM signal generating circuit is used to generate the first PWM signal V11 according to the output voltage sampling signal V FB that characterizes the output voltage Vout of the direct current electric energy generating circuit, the first circuit is used to generate the first signal V22, and the control The circuit selects the first PWM signal V11 or the first signal V22 according to the first enable signal Ven1 to control the working states of the first switch tube M1 and the second switch tube M2.
  • control circuit includes a first sampling circuit and a second sampling circuit, the first sampling circuit receives the input AC voltage Vin and outputs an input voltage sampling signal Vs, and the second sampling circuit receives the DC power Generate the output voltage Vout of the circuit, and output the output voltage sampling signal V FB .
  • the first enable signal Ven1 output by the first enabling circuit when the input AC voltage Vin is in the high-voltage range, the first enable signal Ven1 output by the first enabling circuit is valid, and when the input AC voltage Vin is in the low-voltage range, the first enable signal Ven1 is valid.
  • the first enabling signal Ven1 output by an enabling circuit is invalid.
  • the PWM signal generation circuit is enabled, and the control signal controls the first switching tube M1 and the second switching tube M2 according to the first PWM signal V11. Turn on and turn off.
  • the first circuit is enabled, and the control circuit controls the conduction of the first switch tube and the second switch tube according to the first signal V22. On and off.
  • the first enable signal Ven1 output by the first enabling circuit when the input AC voltage Vin is in the high-voltage range, the first enable signal Ven1 output by the first enabling circuit is invalid, and when the input AC voltage Vin is in the low-voltage range, the The first enable signal Ven1 output by the first enable circuit is valid.
  • the PWM signal generating circuit is enabled, and the control signal controls the conduction and sum of the first switching tube M1 and the second switching tube M2 according to the first PWM signal V11.
  • the control circuit controls the on and off of the first switch tube and the second switch tube according to the first signal V22 This application does not limit this.
  • the first signal V22 or the first PWM signal V11 controls the turning on and off of the first switching tube M1, and the second switching tube M2 and the first switching tube M1 work in opposite states. It is not completely complementary work, and there may be a dead zone to prevent the first switching tube M1 and the second switching tube M2 from being turned on at the same time.
  • the first signal output by the first circuit is a high-level signal for controlling the first switching tube M1 to be turned on and the second switching tube M2 to be turned off.
  • the first signal V22 or the first PWM signal V11 controls the turning on and off of the second switching tube M2, and the first switching tube M1 and the second switching tube M2 are The opposite state works.
  • the first enable signal Ven1 is valid at a high level, and the first enable signal Ven1 is invalid at a low level. In other embodiments, the first enable signal Ven1 is valid at a low level, and the first enable signal Ven1 is invalid at a high level, which is not limited in this application.
  • Fig. 3 is a circuit diagram of an embodiment of a PWM signal generating circuit of the present application.
  • the PWM signal generating circuit includes an error amplifier and a comparator comp1.
  • a first input terminal of the error amplifier receives the output voltage sampling signal V FB
  • a second input terminal receives a reference signal Vref
  • the error amplifier output terminal outputs Compensation signal Vc
  • the difference between the compensation signal Vc and the ramp signal Vrtl is input to the positive input terminal of the comparator comp1
  • the negative input terminal of the comparator comp1 receives the current sampling signal V iL representing the inductor current
  • the comparator The output terminal of the output terminal outputs the first PWM signal V11. Increasing the ramp signal can increase the stability of the circuit.
  • the output voltage of the AC-DC signal can be reduced to an arbitrary value, which can meet the requirements of many occasions, which is beneficial to further optimize the downstream power devices.
  • the PWM signal generating circuit may be in other forms in other embodiments, and this application does not limit this.
  • the DC power generation circuit further includes a driving circuit for driving the first switch tube and the second switch according to the first PWM signal or the first signal, respectively Tube.
  • the first switching tube M1 and the second switching tube M2 work in the PWM state.
  • the first switching tube M1, The second switch tube M2, the first inductor L1, and the first capacitor C1 form a buck topology, and the output voltage of the rectifier circuit is reduced to obtain the output voltage Vout of the DC power generation circuit;
  • the first switching tube M1 is turned on, and the second switching tube M2 is turned off, and the output voltage of the rectifier circuit is directly used as the output voltage Vout of the DC power generation circuit, so that When the input AC voltage Vin is in the high-voltage range and the low-voltage range, the output voltage Vout of the AC-DC voltage is close.

Abstract

一种面向新能源应用的直流电能生成电路，当所述输入交流电压（Vin）在高压范围时，将整流电路（1）的输出电压降低后得到所述直流电能生成电路的输出电压（Vout）；当所述输入交流电压（Vin）在低压范围时，将所述整流电路（1）的输出电压直接作为直流电能生成电路的输出电压（Vout），以使得所述输入交流电压（Vin）在高压范围和在低压范围时，所述交流-直流电压的输出电压（Vout）接近。减小了所述直流电能生成电路的输出电压范围，有利于优化和选择后级功率器件，尤其在新能源应用方面有明显的优势。

Description

一种面向新能源应用的直流电能生成电路
相关申请的交叉引用
本申请要求于2020年5月9日提交的申请号为202010384296.7，发明名称为“一种面向新能源应用的直流电能生成电路”的中国专利申请的优先权，其通过引用方式全部并入本文。
技术领域
本申请涉及电力电子技术和交直流变换领域，更具体的说，涉及一种面向新能源应用的直流电能生成电路。
背景技术
随着电力电子工业的进一步发展和对电源产品要求的进一步提高，特别是当今高电压超级电容动力电池与日俱增的应用，对直流电能生成装置提出了更高的要求。在很多新能源的应用场合，如新能源汽车的供电电源，需要将交流电转换为直流电进而对新能源的汽车进行供电，一般要求直流电能生成装置能在120V-280V的电压范围内工作，由于直流电能生成装置的后级还有功率器件，若直流电能生成电路的输出信号的范围较大，则后级功率器件的抗压等能力要求很高。
现有技术中直接利用整流桥将交流电生成直流电能，但整流桥输出电压的范围依然很大，不利用后级功率器件的选择和优化。
发明内容
有鉴于此，本申请提出一种面向新能源应用的直流电能生成电路，以减小所述直流电能生成电路的输出电压范围，解决了现有技术直流电能生成电路的输出电压范围较大不利于后级功率器件的选择和优化的技术问题。
本申请提供了一种面向新能源应用的直流电能生成电路，包括：整流电路、第一开关管、第二开关管、第一电感、第一电容和控制电路，所述整流电路用于接收输入交流电压，所述整流电路的输出高电位端连接所述第一开关管的第一端，所述第一开关管的第二端连接所述第一电感的一端， 所述第一电感的另一端为所述直流电能生成电路的输出高电位端，所述第二开关管的第一端连接所述第一开关管和所述第一电感的公共端，所述第二开关管的第二端为所述直流电能生成电路的输出低电位端，所述第一电容耦接在所述直流电能生成电路的输出端，所述控制电路用于控制所述第一开关管和第二开关管的开关状态，以使得：当所述输入交流电压在高压范围时，所述第一开关管和所述第二开关管工作在PWM状态，当所述输入交流电压在低压范围时，所述第一开关管导通，所述第二开关管关断。
在一个实施例中，所述控制电路包括第一使能电路、PWM信号生成电路和第一电路，所述第一使能信号用以根据表征所述输入交流电压的输入电压采样信号生成第一使能信号，所述PWM信号生成电路用以根据表征所述直流电能生成电路输出电压的输出电压采样信号生成第一PWM信号，所述第一电路用以生成第一信号，所述控制电路根据第一使能信号选择所述第一PWM信号或所述第一信号控制所述第一开关管和第二开关管的工作状态。
在一个实施例中，在第一使能信号有效期间，所述PWM信号生成电路被使能，所述控制信号根据所述第一PWM信号控制所述第一开关管和第二开关管的导通和关断，在第一使能信号无效期间，所述第一电路被使能，所述控制电路根据所述第一信号控制所述第一开关管和第二开关管的导通和关断。
在一个实施例中，当所述输入交流电压在高压范围时，所述第一使能电路输出的第一使能信号有效，当所述输入交流电压在低压范围时，所述第一使能电路输出的所述第一使能信号无效。
在一个实施例中，所述PWM信号生成电路包括误差放大器和比较器，所述误差放大器的第一输入端接收所述输出电压采样信号，其第二输入端接收参考信号，所述误差放大器输出端输出补偿信号，将所述补偿信号和斜坡信号作差后输入比较器的正输入端，所述比较器的负输入端接收表征电感电流的电流采样信号，所述比较器的输出端输出所述第一PWM信号。
在一个实施例中，当所述第一开关管和所述第二开关管工作在PWM状态时，所述第一开关管和所述第二开关管互补工作。
在一个实施例中，所述第一电路输出的所述第一信号为高电平信号。
在一个实施例中，所述第一使能信号有效为高电平，所述第一使能信号无效为低电平。
在一个实施例中，所述控制电路包括第一采样电路和第二采样电路，所述第一采样电路接收所述输入交流电压，输出输入电压采样信号，所述第二采样电路接收所述直流电能生成电路的输出电压，输出输出电压采样信号。
在一个实施例中，所述整流电路为全桥整流电路和半桥整流电路。
在一个实施例中，所述直流电能生成电路还包括驱动电路，所述驱动电路用以分别根据所述第一PWM信号或所述第一信号驱动所述第一开关管和所述第二开关管。
与现有技术相比，本申请之技术方案具有以下优点：本申请的面向新能源应用的直流电能生成电路，当所述输入交流电压在高压范围时，所述第一开关管和所述第二开关管工作在PWM状态，所述第一开关管、所述第二开关管、所述第一电感和所述第一电容组成buck拓扑，将所述整流电路的输出电压降低后得到所述直流电能生成电路的输出电压；当所述输入交流电压在低压范围时，所述第一开关管导通，所述第二开关管关断，将所述整流电路的输出电压直接作为直流电能生成电路的输出电压，以使得所述输入交流电压在高压范围和在低压范围时，所述交流-直流电压的输出电压接近。本申请所述的直流电能生成电路减小了所述直流电能生成电路的输出电压范围，有利于优化和选择后级功率器件，解决了现有技术直流电能生成电路的输出电压范围较大不利于后级功率器件的选择和优化的技术问题，尤其在新能源应用方面有明显的优势。
附图说明
图1为本申请面向新能源应用的直流电能生成电路的实施例电路图；
图2为本申请控制电路的实施例电路图；
图3为本申请PWM信号生成电路的实施例电路图。
具体实施方式
以下结合附图对本申请的优选实施例进行详细描述，但本申请并不仅仅限于这些实施例。本申请涵盖任何在本申请的精神和范围上做的替代、 修改、等效方法以及方案。
为了使公众对本申请有彻底的了解，在以下本申请优选实施例中详细说明了具体的细节，而对本领域技术人员来说没有这些细节的描述也可以完全理解本申请。
在下列段落中参照附图以举例方式更具体地描述本申请。需说明的是，附图均采用较为简化的形式且均使用非精准的比例，仅用以方便、明晰地辅助说明本申请实施例的目的。
图1示意了本申请面向新能源应用的直流电能生成电路的实施例电路图。所述面向新能源应用的直流电能生成电路包括整流电路1、第一开关管M1、第二开关管M2、第一电感L1、第一电容C1和控制电路2，所述整流电路1用于接收输入交流电压Vin，所述整流电路1的输出高电位端连接所述第一开关管M1的第一端，所述第一开关管M1的第二端连接所述第一电感L1的一端，所述第一电感L1的另一端为所述直流电能生成电路的输出高电位端，所述第二开关管M2的第一端连接所述第一开关管M1和所述第一电感L1的公共端，所述第二开关管M2的第二端为所述直流电能生成电路的输出低电位端，所述第一电容C1耦接在所述直流电能生成电路的输出端，所述控制电路2用于控制所述第一开关管M1和第二开关管M2的开关状态，以使得：当所述输入交流电压Vin在高压范围时，所述第一开关管M1和所述第二开关管M2工作在PWM状态，当所述输入交流电压Vin在低压范围时，所述第一开关管M1导通，所述第二开关管M2关断。
当所述第一开关管和所述第二开关管工作在PWM状态时，所述第一开关管和所述第二开关管互补工作。
在一个实施例中，所述高压范围为输入交流电压Vin在200V-280V区间，所述电压范围为输入交流电压Vin在100V-200V区间。
在一个实施例中，所述直流电能生成电路的输出端连接隔离型变换器，进而驱动电源或者电器设备，用以进行隔离。
在一个实施例中，所述整流电路为全桥整流电路和半桥整流电路。
本申请的面向新能源应用的直流电能生成电路，当所述输入交流电压Vin在高压范围时，所述第一开关管M1和所述第二开关管M2工作在 PWM状态，此时，所述第一开关管M1、所述第二开关管M2、所述第一电感L1和所述第一电容C1组成buck拓扑，将所述整流电路的输出电压降低后得到所述直流电能生成电路的输出电压Vout；当所述输入交流电压Vin在低压范围时，所述第一开关管M1导通，所述第二开关管M2关断，将所述整流电路的输出电压直接作为直流电能生成电路的输出电压Vout，以使得所述输入交流电压Vin在高压范围和在低压范围时，所述交流-直流电压的输出电压Vout接近。本申请所述的直流电能生成电路减小了所述直流电能生成电路的输出电压范围，有利于优化和选择后级功率器件，解决了现有技术直流电能生成电路的输出电压范围较大不利于后级功率器件的选择和优化的技术问题。
图2为本申请控制电路的实施例电路图。所述控制电路包括第一使能电路、PWM信号生成电路和第一电路，所述第一使能信号用以根据表征所述输入交流电压Vin的输入电压采样信号Vs生成第一使能信号Ven1，所述PWM信号生成电路用以根据表征所述直流电能生成电路输出电压Vout的输出电压采样信号V FB生成第一PWM信号V11，所述第一电路用以生成第一信号V22，所述控制电路根据第一使能信号Ven1选择所述第一PWM信号V11或所述第一信号V22控制所述第一开关管M1和第二开关管M2的工作状态。
进一步的，所述控制电路包括第一采样电路和第二采样电路，所述第一采样电路接收所述输入交流电压Vin，输出输入电压采样信号Vs，所述第二采样电路接收所述直流电能生成电路的输出电压Vout，输出输出电压采样信号V FB。
在一个实施例中，当所述输入交流电压Vin在高压范围时，所述第一使能电路输出的第一使能信号Ven1有效，当所述输入交流电压Vin在低压范围时，所述第一使能电路输出的所述第一使能信号Ven1无效。
进一步的，在第一使能信号Ven1有效期间，所述PWM信号生成电路被使能，所述控制信号根据所述第一PWM信号V11控制所述第一开关管M1和第二开关管M2的导通和关断，在第一使能信号Ven1无效期间，所述第一电路被使能，所述控制电路根据所述第一信号V22控制所述第一开关管和第二开关管的导通和关断。
在其他的实施例中，当所述输入交流电压Vin在高压范围时，所述第一使能电路输出的第一使能信号Ven1无效，当所述输入交流电压Vin在低压范围时，所述第一使能电路输出的所述第一使能信号Ven1有效。在第一使能信号Ven1无效期间，所述PWM信号生成电路被使能，所述控制信号根据所述第一PWM信号V11控制所述第一开关管M1和第二开关管M2的导通和关断，在第一使能信号Ven1有效期间，所述第一电路被使能，所述控制电路根据所述第一信号V22控制所述第一开关管和第二开关管的导通和关断，本申请不对此进行限制。
具体的，所述第一信号V22或所述第一PWM信号V11控制第一开关管的M1导通和关断，所述第二开关管M2和所述第一开关管M1以相反状态工作。并非完全的互补工作，可能存在死区，以防止第一开关管M1和第二开关管M2同时导通。在一个实施例中，所述第一电路输出的所述第一信号为高电平信号，用以控制所述第一开关管M1导通，所述第二开关管M2关断。
在其他的实施例中，所述第一信号V22或所述第一PWM信号V11控制第二开关管的M2导通和关断，所述第一开关管M1和所述第二开关管M2以相反状态工作。
在一个实施例中，所述第一使能信号Ven1有效为高电平，所述第一使能信号Ven1无效为低电平，在其他的实施例中，所述所述第一使能信号Ven1有效为低电平，所述第一使能信号Ven1无效为高电平，本申请不对此进行限制。
图3为本申请PWM信号生成电路的实施例电路图。所述PWM信号生成电路包括误差放大器和比较器comp1，所述误差放大器的第一输入端接收所述输出电压采样信号V FB，其第二输入端接收参考信号Vref，所述误差放大器输出端输出补偿信号Vc，将所述补偿信号Vc和斜坡信号Vrtl作差后输入比较器comp1的正输入端，所述比较器comp1的负输入端接收表征电感电流的电流采样信号V iL，所述比较器的输出端输出所述第一PWM信号V11。增加斜坡信号可以增加电路的稳定性。
通过改变参考信号Vref的值，可以使得所述交流-直流信号的输出电压降为任意值，能够达到很多场合的要求，有利于进一步优化后级功率器 件。
所述PWM信号生成电路在其他的实施例中可以为其他的形式，本申请不对此进行限制。
在一个实施例中，所述直流电能生成电路还包括驱动电路，所述驱动电路用以分别根据所述第一PWM信号或所述第一信号驱动所述第一开关管和所述第二开关管。
本申请的直流电能生成电路当所述输入交流电压Vin在高压范围时，所述第一开关管M1和所述第二开关管M2工作在PWM状态，此时，所述第一开关管M1、所述第二开关管M2、所述第一电感L1和所述第一电容C1组成buck拓扑，将所述整流电路的输出电压降低后得到所述直流电能生成电路的输出电压Vout；当所述输入交流电压Vin在低压范围时，所述第一开关管M1导通，所述第二开关管M2关断，将所述整流电路的输出电压直接作为直流电能生成电路的输出电压Vout，以使得所述输入交流电压Vin在高压范围和在低压范围时，所述交流-直流电压的输出电压Vout接近。
虽然以上将实施例分开说明和阐述，但涉及部分共通之技术，在本领域普通技术人员看来，可以在实施例之间进行替换和整合，涉及其中一个实施例未明确记载的内容，则可参考有记载的另一个实施例。
以上所述的实施方式，并不构成对该技术方案保护范围的限定。任何在上述实施方式的精神和原则之内所作的修改、等同替换和改进等，均应包含在该技术方案的保护范围之内。

Claims (11)

  1. 一种面向新能源应用的直流电能生成电路，其特征在于，包括：整流电路、第一开关管、第二开关管、第一电感、第一电容和控制电路，所述整流电路用于接收输入交流电压，所述整流电路的输出高电位端连接所述第一开关管的第一端，所述第一开关管的第二端连接所述第一电感的一端，所述第一电感的另一端为所述直流电能生成电路的输出高电位端，所述第二开关管的第一端连接所述第一开关管和所述第一电感的公共端，所述第二开关管的第二端为所述直流电能生成电路的输出低电位端，所述第一电容耦接在所述直流电能生成电路的输出端，所述控制电路用于控制所述第一开关管和第二开关管的开关状态，以使得：当所述输入交流电压在高压范围时，所述第一开关管和所述第二开关管工作在PWM状态，当所述输入交流电压在低压范围时，所述第一开关管导通，所述第二开关管关断。
  2. 根据权利要求1所述的面向新能源应用的直流电能生成电路，其特征在于：所述控制电路包括第一使能电路、PWM信号生成电路和第一电路，所述第一使能信号用以根据表征所述输入交流电压的输入电压采样信号生成第一使能信号，所述PWM信号生成电路用以根据表征所述直流电能生成电路输出电压的输出电压采样信号生成第一PWM信号，所述第一电路用以生成第一信号，所述控制电路根据第一使能信号选择所述第一PWM信号或所述第一信号控制所述第一开关管和第二开关管的工作状态。
  3. 根据权利要求2所述的面向新能源应用的直流电能生成电路，其特征在于：在第一使能信号有效期间，所述PWM信号生成电路被使能，所述控制信号根据所述第一PWM信号控制所述第一开关管和第二开关管的导通和关断，在第一使能信号无效期间，所述第一电路被使能，所述控制电路根据所述第一信号控制所述第一开关管和第二开关管的导通和关断。
  4. 根据权利要求3所述的面向新能源应用的直流电能生成电路，其特征在于：当所述输入交流电压在高压范围时，所述第一使能电路输出的第一使能信号有效，当所述输入交流电压在低压范围时，所述第一使能电路输出的所述第一使能信号无效。
  5. 根据权利要求2所述的面向新能源应用的直流电能生成电路，其特征在于：所述PWM信号生成电路包括误差放大器和比较器，所述误差放大器的第一输入端接收所述输出电压采样信号，其第二输入端接收参考信号，所述误差放大器输出端输出补偿信号，将所述补偿信号和斜坡信号作差后输入比较器的正输入端，所述比较器的负输入端接收表征电感电流的电流采样信号，所述比较器的输出端输出所述第一PWM信号。
  6. 根据权利要求1所述的面向新能源应用的直流电能生成电路，其特征在于：当所述第一开关管和所述第二开关管工作在PWM状态时，所述第一开关管和所述第二开关管互补工作。
  7. 根据权利要求2所述的面向新能源应用的直流电能生成电路，其特征在于：所述第一电路输出的所述第一信号为高电平信号。
  8. 根据权利要求3所述的面向新能源应用的直流电能生成电路，其特征在于：所述第一使能信号有效为高电平，所述第一使能信号无效为低电平。
  9. 根据权利要求2所述的面向新能源应用的直流电能生成电路，其特征在于：所述控制电路包括第一采样电路和第二采样电路，所述第一采样电路接收所述输入交流电压，输出输入电压采样信号，所述第二采样电路接收所述直流电能生成电路的输出电压，输出输出电压采样信号。
  10. 根据权利要求1所述的面向新能源应用的直流电能生成电路，其特征在于：所述整流电路为全桥整流电路和半桥整流电路。
  11. 根据权利要求2所述的面向新能源应用的直流电能生成电路，其特征在于：所述直流电能生成电路还包括驱动电路，所述驱动电路用以分别根据所述第一PWM信号或所述第一信号驱动所述第一开关管和所述第二开关管。
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101728947A (zh) * 2008-10-29 2010-06-09 三美电机株式会社 Dc-dc转换器
JP2016123272A (ja) * 2016-03-23 2016-07-07 東芝ライテック株式会社 力率改善回路及び電源装置
CN108696105A (zh) * 2018-07-09 2018-10-23 杰华特微电子（张家港）有限公司 开关电源控制电路及开关电源
CN110190761A (zh) * 2019-06-14 2019-08-30 矽力杰半导体技术(杭州)有限公司 交流-直流转换电路和方法
CN110247563A (zh) * 2019-04-03 2019-09-17 矽力杰半导体技术(杭州)有限公司 交流-直流转换电路和方法以及充电器
CN111541371A (zh) * 2020-05-09 2020-08-14 湖南省计量检测研究院 一种面向新能源应用的直流电能生成电路

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010183723A (ja) * 2009-02-05 2010-08-19 Mitsumi Electric Co Ltd Ｄｃ−ｄｃコンバータおよびスイッチング制御回路
US9467051B2 (en) * 2014-01-16 2016-10-11 Micrel, Inc. Switching regulator using adaptive slope compensation with DC correction
CN109067209A (zh) * 2018-09-30 2018-12-21 严添明 一种大功率宽范围可调直流线性稳压电源

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101728947A (zh) * 2008-10-29 2010-06-09 三美电机株式会社 Dc-dc转换器
JP2016123272A (ja) * 2016-03-23 2016-07-07 東芝ライテック株式会社 力率改善回路及び電源装置
CN108696105A (zh) * 2018-07-09 2018-10-23 杰华特微电子（张家港）有限公司 开关电源控制电路及开关电源
CN110247563A (zh) * 2019-04-03 2019-09-17 矽力杰半导体技术(杭州)有限公司 交流-直流转换电路和方法以及充电器
CN110190761A (zh) * 2019-06-14 2019-08-30 矽力杰半导体技术(杭州)有限公司 交流-直流转换电路和方法
CN111541371A (zh) * 2020-05-09 2020-08-14 湖南省计量检测研究院 一种面向新能源应用的直流电能生成电路

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