CN112803819A - 一种小功率逆变电源电路 - Google Patents

一种小功率逆变电源电路 Download PDF

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CN112803819A
CN112803819A CN202110052777.2A CN202110052777A CN112803819A CN 112803819 A CN112803819 A CN 112803819A CN 202110052777 A CN202110052777 A CN 202110052777A CN 112803819 A CN112803819 A CN 112803819A
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谢恩来
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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
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/53—Conversion of dc power input into ac power output without possibility of reversal 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
    • H02M7/537—Conversion of dc power input into ac power output without possibility of reversal 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, e.g. single switched pulse inverters
    • H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal 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, e.g. single switched pulse inverters in a bridge configuration
    • H02M7/53871—Conversion of dc power input into ac power output without possibility of reversal 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, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current
    • 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
    • H02M1/14—Arrangements for reducing ripples from dc input or output
    • 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
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/53—Conversion of dc power input into ac power output without possibility of reversal 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
    • H02M7/537—Conversion of dc power input into ac power output without possibility of reversal 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, e.g. single switched pulse inverters
    • H02M7/539—Conversion of dc power input into ac power output without possibility of reversal 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, e.g. single switched pulse inverters with automatic control of output wave form or frequency
    • H02M7/5395—Conversion of dc power input into ac power output without possibility of reversal 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, e.g. single switched pulse inverters with automatic control of output wave form or frequency by pulse-width modulation

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inverter Devices (AREA)

Abstract

本发明公开了一种小功率逆变电源电路，包括直流电源输入，双Boost斩波升压电路，逆变电路，PWM驱动电路，微控制器电路，SPWM驱动电路，变压滤波电路，交流电输出，所述直流电源输入通过锂电池DC进行供电，双Boost斩波升压电路用于升高锂电池提供的电压，逆变电路采用全桥电路的方式，用于直流电转换为交流电，PWM驱动电路产生一个可调制的固定频率脉冲宽度驱动双Boost斩波升压电路，微控制器电路实现单极性SPWM波形的输出经SPWM驱动供给逆变电路使用。本发明小功率逆变电源电路采用双Boost斩波升压电路大大降低了电流的纹波，产品性能提高，选用STC12C5620AD单片机输出SWMP控制信号质量好，抗干扰能力强，稳定性高，电源效率高，结构简单，操作方便。

Description

一种小功率逆变电源电路
技术领域
本发明涉及电源领域，具体是一种小功率逆变电源电路。
背景技术
随着科技的发展，智能数码产品不断的更新换代，他们的对于电源的要求也不断的增高，在需要交流电却只有电池的情况下，则需要逆变器来进行电能的变换，给计算机或者其他电气设备提供可使用的连续交流电源，现有的逆变电源大多效率低，噪音大，电压稳定度不高，抗干扰能力差，并且电能的损耗过高。
发明内容
本发明的目的在于提供一种小功率逆变电源电路，以解决上述背景技术中提出的问题。
为实现上述目的，本发明提供如下技术方案：
一种小功率逆变电源电路，包括直流电源输入，双Boost斩波升压电路，逆变电路，PWM驱动电路，微控制器电路，SPWM驱动电路，变压滤波电路，交流电输出，所述直流电源输入通过锂电池DC进行供电，双Boost斩波升压电路用于升高锂电池提供的电压，逆变电路采用全桥电路的方式，用于直流电转换为交流电，PWM驱动电路产生一个可调制的固定频率脉冲宽度驱动双Boost斩波升压电路，微控制器电路实现单极性SPWM波形的输出经SPWM驱动供给逆变电路使用。
作为本发明的进一步技术方案：所述锂电池DC的正极连接电容C1的正极、电感L1和电感L2，锂电池DC的负极连接电容C1的负极、晶体管N2的发射极、晶体管N1的发射极、二极管D2的阳极、二极管D4的阳极、电容C2的负极、晶体管N4的发射极、二极管D6的阳极、晶体管N6的发射极、二极管D8的阳极、电容C3的负极和地端，电感L1的另一端连接晶体管N1的集电极、二极管D2的阴极和二极管D1的阳极，晶体管N1的门极连接二极管D9的阴极和三极管P1的发射极，三极管P1的集电极通过电阻R1连接三极管P1的基极、二极管D9的阳极和驱动器IC3的引脚9，驱动器IC3的引脚10连接二极管D10的阳极、三极管P2的基极和电阻R2，电阻R2的另一端连接三极管P2的集电极，三极管P2的发射极连接二极管D10的阴极和晶体管N2的门极，晶体管N2的集电极连接二极管D4的阴极、电感L2的另一端和二极管D3的阳极，二极管D3的阴极连接二极管D1 的阴极、电容C2的正极、晶体管N3的集电极、二极管D5的阴极，晶体管N5的集电极、二极管D7的阴极和电容C3的正极，晶体管N3的发射极连接晶体管N4的集电极、二极管D5的阳极、二极管D6的阳极和变压器W的初级绕组，晶体管N5的发射极连接二极管D7的阳极、晶体管N6的集电极、二极管D8的阴极和变压器W初级绕组的另一端，晶体管N3和晶体管N4的门极连接驱动器IC1，晶体管N5和晶体管N6的门极连接驱动器IC2，变压器W的次级绕组通过电感L3连接电容C4的正极和负载RL，变压器W次级绕组的另一端连接电容C4的负极和负载RL的另一端。
作为本发明的进一步技术方案：所述SPWM驱动电路通过驱动器IC1和IC2控制，其中驱动器IC1的7脚通过电阻R3连接晶体管N3的门极，驱动器IC1的5脚连接电容C6的正极、电容C7和二极管D11的阴极，驱动器IC1的6脚连接电容C6的负极、电容C7的另一端、晶体管N3的发射极、二极管D3的阳极、晶体管N4的集电极和二极管D4的阴极，驱动器IC1的3脚连接二极管D11的阳极、+12V电压、电容C8的正极和电容C10，驱动器IC1的2脚连接驱动器IC1的13脚、电容C5、电容C8的负极、电容C10的另一端、晶体管N4的发射极、二极管D4的阳极和地端，驱动器IC1的1脚通过电阻R4连接晶体管N4的门极，晶体管IC1的10脚、12脚分别连接微控制器U1的P1.0脚和P1.1脚，晶体管IC1的9脚连接电容C5的另一端和+5V电压。
作为本发明的进一步技术方案：所述直流电源输入由锂电池DC组成，双Boost斩波升压电路由晶体管N1-N2、电感L1-L2、二极管D1-D4和电容C1-C2组成，逆变电路由晶体管N3-N6、二极管D5-D8组成，PWM驱动电路由驱动器IC3和三极管P1-P2组成，微控制器电路由微控制器U1组成，SPWM驱动电路由驱动器IC1-IC2及其引脚上元件组成，变压滤波电路由变压器W、电感L3和电容C4组成。
作为本发明的进一步技术方案：所述驱动器IC1-IC2选用IR2110驱动芯片，驱动器IC3选用TL494控制芯片。
作为本发明的进一步技术方案：所述微控制器U1选用STC12C5620AD单片机。
作为本发明的进一步技术方案：所述晶体管N1-N6选用N型的IGBT管，三极管P1-P2选用PNP型三极管。
作为本发明的进一步技术方案：所述电容C1、C2、C3、C4、C6和C8为有极性电容。
与现有技术相比，本发明的有益效果是：本发明小功率逆变电源电路采用双Boost斩波升压电路大大降低了电流的纹波，产品性能提高，选用STC12C5620AD单片机输出SWMP控制信号质量好，抗干扰能力强，稳定性高，电源效率高，结构简单，操作方便。
附图说明
图1为本发明实施例的原理方框示意图。
图2为本发明实施例的逆变电源电路结构图。
图3为本发明中SPWM驱动电路的部分电路结构图。
具体实施方式
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，都属于本发明保护的范围。
实施例1：请参阅图1，一种小功率逆变电源电路，包括直流电源输入，双Boost斩波升压电路，逆变电路，PWM驱动电路，微控制器电路，SPWM驱动电路，变压滤波电路，交流电输出，所述直流电源输入通过锂电池DC进行供电，双Boost斩波升压电路用于升高锂电池提供的电压，逆变电路采用全桥电路的方式，用于直流电转换为交流电，PWM驱动电路产生一个可调制的固定频率脉冲宽度驱动双Boost斩波升压电路，微控制器电路实现单极性SPWM波形的输出经SPWM驱动供给逆变电路使用。
实施例2：在实施例1的基础上，请参阅图2，锂电池DC的正极连接电容C1的正极、电感L1和电感L2，锂电池DC的负极连接电容C1的负极、晶体管N2的发射极、晶体管N1的发射极、二极管D2的阳极、二极管D4的阳极、电容C2的负极、晶体管N4的发射极、二极管D6的阳极、晶体管N6的发射极、二极管D8的阳极、电容C3的负极和地端，电感L1的另一端连接晶体管N1的集电极、二极管D2的阴极和二极管D1的阳极，晶体管N1的门极连接二极管D9的阴极和三极管P1的发射极，三极管P1的集电极通过电阻R1连接三极管P1的基极、二极管D9的阳极和驱动器IC3的引脚9，驱动器IC3的引脚10连接二极管D10的阳极、三极管P2的基极和电阻R2，电阻R2的另一端连接三极管P2的集电极，三极管P2的发射极连接二极管D10的阴极和晶体管N2的门极，晶体管N2的集电极连接二极管D4的阴极、电感L2的另一端和二极管D3的阳极，二极管D3的阴极连接二极管D1 的阴极、电容C2的正极、晶体管N3的集电极、二极管D5的阴极，晶体管N5的集电极、二极管D7的阴极和电容C3的正极，晶体管N3的发射极连接晶体管N4的集电极、二极管D5的阳极、二极管D6的阳极和变压器W的初级绕组，晶体管N5的发射极连接二极管D7的阳极、晶体管N6的集电极、二极管D8的阴极和变压器W初级绕组的另一端，晶体管N3和晶体管N4的门极连接驱动器IC1，晶体管N5和晶体管N6的门极连接驱动器IC2，变压器W的次级绕组通过电感L3连接电容C4的正极和负载RL，变压器W次级绕组的另一端连接电容C4的负极和负载RL的另一端。
实施例3：在实施例2的基础上，请参阅图3，SPWM驱动电路通过驱动器IC1和IC2控制，其中驱动器IC1的7脚通过电阻R3连接晶体管N3的门极，驱动器IC1的5脚连接电容C6的正极、电容C7和二极管D11的阴极，驱动器IC1的6脚连接电容C6的负极、电容C7的另一端、晶体管N3的发射极、二极管D3的阳极、晶体管N4的集电极和二极管D4的阴极，驱动器IC1的3脚连接二极管D11的阳极、+12V电压、电容C8的正极和电容C10，驱动器IC1的2脚连接驱动器IC1的13脚、电容C5、电容C8的负极、电容C10的另一端、晶体管N4的发射极、二极管D4的阳极和地端，驱动器IC1的1脚通过电阻R4连接晶体管N4的门极，晶体管IC1的10脚、12脚分别连接微控制器U1的P1.0脚和P1.1脚，晶体管IC1的9脚连接电容C5的另一端和+5V电压。
本发明的工作原理是：直流电源输入电力，电路开始运行，双Boost斩波升压电路由驱动器TL494通过PWM实现控制，驱动器TL494输出一个可调制固定频率的脉冲宽度，其中三极管P1-P2的基极由于驱动器TL494两个内置晶体管而交替导通，实现升压输出，逆变电路为全桥电路，以单片机STC12C5620AD来实现但继续SPWM波形的输出，经过SPWM驱动电路供给逆变电路使用，SPWM驱动电路控制逆变电路IGBT的关断，最终输出的交流电经过变压滤波后，再通过分压电阻采样，将采集信息反馈给STC12C5620AD单片机，进行逆变系统输出电压大小与波形的调节。
对于本领域技术人员而言，显然本发明不限于上述示范性实施例的细节，而且在不背离本发明的精神或基本特征的情况下，能够以其他的具体形式实现本发明。因此，无论从哪一点来看，均应将实施例看作是示范性的，而且是非限制性的，本发明的范围由所附权利要求而不是上述说明限定，因此旨在将落在权利要求的等同要件的含义和范围内的所有变化囊括在本发明内。不应将权利要求中的任何附图标记视为限制所涉及的权利要求。
此外，应当理解，虽然本说明书按照实施方式加以描述，但并非每个实施方式仅包含一个独立的技术方案，说明书的这种叙述方式仅仅是为清楚起见，本领域技术人员应当将说明书作为一个整体，各实施例中的技术方案也可以经适当组合，形成本领域技术人员可以理解的其他实施方式。

Claims (7)

1.一种小功率逆变电源电路，包括直流电源输入，双Boost斩波升压电路，逆变电路，PWM驱动电路，微控制器电路，SPWM驱动电路，变压滤波电路，交流电输出，其特征在于，所述直流电源输入通过锂电池DC进行供电，锂电池DC的正极连接电容C1的正极、电感L1和电感L2，锂电池DC的负极连接电容C1的负极、晶体管N2的发射极、晶体管N1的发射极、二极管D2的阳极、二极管D4的阳极、电容C2的负极、晶体管N4的发射极、二极管D6的阳极、晶体管N6的发射极、二极管D8的阳极、电容C3的负极和地端，电感L1的另一端连接晶体管N1的集电极、二极管D2的阴极和二极管D1的阳极，晶体管N1的门极连接二极管D9的阴极和三极管P1的发射极，三极管P1的集电极通过电阻R1连接三极管P1的基极、二极管D9的阳极和驱动器IC3的引脚9，驱动器IC3的引脚10连接二极管D10的阳极、三极管P2的基极和电阻R2，电阻R2的另一端连接三极管P2的集电极，三极管P2的发射极连接二极管D10的阴极和晶体管N2的门极，晶体管N2的集电极连接二极管D4的阴极、电感L2的另一端和二极管D3的阳极，二极管D3的阴极连接二极管D1 的阴极、电容C2的正极、晶体管N3的集电极、二极管D5的阴极，晶体管N5的集电极、二极管D7的阴极和电容C3的正极，晶体管N3的发射极连接晶体管N4的集电极、二极管D5的阳极、二极管D6的阳极和变压器W的初级绕组，晶体管N5的发射极连接二极管D7的阳极、晶体管N6的集电极、二极管D8的阴极和变压器W初级绕组的另一端，晶体管N3和晶体管N4的门极连接驱动器IC1，晶体管N5和晶体管N6的门极连接驱动器IC2，变压器W的次级绕组通过电感L3连接电容C4的正极和负载RL，变压器W次级绕组的另一端连接电容C4的负极和负载RL的另一端。
2.根据权利要求1所述的一种小功率逆变电源电路，其特征在于，所述SPWM驱动电路通过驱动器IC1和IC2控制，其中驱动器IC1的7脚通过电阻R3连接晶体管N3的门极，驱动器IC1的5脚连接电容C6的正极、电容C7和二极管D11的阴极，驱动器IC1的6脚连接电容C6的负极、电容C7的另一端、晶体管N3的发射极、二极管D3的阳极、晶体管N4的集电极和二极管D4的阴极，驱动器IC1的3脚连接二极管D11的阳极、+12V电压、电容C8的正极和电容C10，驱动器IC1的2脚连接驱动器IC1的13脚、电容C5、电容C8的负极、电容C10的另一端、晶体管N4的发射极、二极管D4的阳极和地端，驱动器IC1的1脚通过电阻R4连接晶体管N4的门极，晶体管IC1的10脚、12脚分别连接微控制器U1的P1.0脚和P1.1脚，晶体管IC1的9脚连接电容C5的另一端和+5V电压。
3.根据权利要求2所述的一种小功率逆变电源电路，其特征在于，所述直流电源输入由锂电池DC组成，双Boost斩波升压电路由晶体管N1-N2、电感L1-L2、二极管D1-D4和电容C1-C2组成，逆变电路由晶体管N3-N6、二极管D5-D8组成，PWM驱动电路由驱动器IC3和三极管P1-P2组成，微控制器电路由微控制器U1组成，SPWM驱动电路由驱动器IC1-IC2及其引脚上元件组成，变压滤波电路由变压器W、电感L3和电容C4组成。
4.根据权利要求3所述的一种小功率逆变电源电路，其特征在于，所述驱动器IC1-IC2选用IR2110驱动芯片，驱动器IC3选用TL494控制芯片。
5.根据权利要求4所述的一种小功率逆变电源电路，其特征在于，所述微控制器U1选用STC12C5620AD单片机。
6.根据权利要求5所述的一种小功率逆变电源电路，其特征在于，所述晶体管N1-N6选用N型的IGBT管，三极管P1-P2选用PNP型三极管。
7.根据权利要求1所述的一种小功率逆变电源电路，其特征在于，所述电容C1、C2、C3、C4、C6和C8为有极性电容。
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