单相和三相逆变器SPWM调制技术的仿真与分析.pdf

第-1-页 共 13 页目录1.引言.-2-2.PWM 控制的基本原理.-2-3.PWM 逆变电路及其控制方法.-3-4.电路仿真及分析 .-4-4.1双极性 SPWM 波形的产生 .-4-4.2三相 SPWM 波形的产生.-6-4.3双极性 SPWM 控制方式单相桥式逆变电路仿真及分析-7-5.双极性 SPWM 控制方式的单相桥式逆变电路和三相逆变电路比较分析 .-12-6.结论.-13-7.参考文献 .-13-第-2-页 共 13 页1.引言PWM 技术的的应用十分广泛，目前中小功率的逆变电路几乎都采用了PWM 技术。它使电力电子装置的性能大大提高，因此它在电力电子技术的发展史上占有十分重要的地位。PWM 控制技术正是有赖于在逆变电路中的成功应用，才确定了它在电力电子技术中的重要地位。常用的PWM 技术包括：正弦脉宽调制（SPWM）、选择谐波调制（SHEPWM）、电流滞环调制（CHPWM）和电压空间矢量调制（SVPWM）。2.PWM 控制的基本原理PWM（Pulse Width Modulation）控制就是对脉冲的宽度进行调制的技术，即通过对一系列脉冲的宽度进行调制，来等效地获得所需要的波形。PWM 控制技术的重要理论基础是面积等效原理，即：冲量相等而形状不同的窄脉冲加在具有惯性的环节上时，其效果基本相同。下面分析如何用一系列等幅不等宽的脉冲来代替一个正弦半波。把正弦半波分成N 等分，就可以把正弦半波看成由N 个彼此相连的脉冲序列所组成的波形。如果把这些脉冲序列用相同数量的等幅不等宽的矩形脉冲代替，使矩形脉冲的中点和相应正弦波部分的中点重合，且使矩形脉冲和相应的正弦波部分面积（冲量）相等，就可得到图1 所示的脉冲序列，这就是PWM 波形。像这种脉冲的宽度按正弦规律变化而和正弦波等效的PWM 波形，也称为 SPWM 波。图 1 单极性 SPWM 控制方式波形上图所示的波形称为单极性SPWM 波形，根据面积等效原理，正弦波还可等效为图 2 中所示的 PWM 波，这种波形称为双极性SPWM 波形，而且这种方式在实际应用中更为广泛。OtUd-Ud文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1第-3-页 共 13 页图 2 双极性 SPWM 控制方式波形3.PWM 逆变电路及其控制方法PWM 逆变电路可分为电压型和电流型两种，目前实际应用的几乎都是电压型电路，因此本节主要分析电压型逆变电路的控制方法。要得到需要的 PWM 波形有两种方法，分别是计算法和调制法。根据正弦波频率、幅值和半周期脉冲数，准确计算PWM 波各脉冲宽度和间隔，据此控制逆变电路开关器件的通断，就可得到所需PWM 波形，这种方法称为计算法。由于计算法较繁琐，当输出正弦波的频率、幅值或相位变化时，结果都要变化。与计算法相对应的是调制法，即把希望调制的波形作为调制信号，把接受调制的信号作为载波，通过信号波的调制得到所期望的PWM 波形。通常采用等腰三角波作为载波，在调制信号波为正弦波时，所得到的就是SPWM 波形。下面具体分析单相和三相逆变电路双极性控制方式。图 3 是采用 IGBT 作为开关器件的单相桥式电压型逆变电路。图 3 单相桥式 PWM 逆变电路OtUd-Ud文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1第-4-页 共 13 页单相桥式逆变电路双极性PWM 控制方式：在 Ur 的半个周期内，三角波载波有正有负，所得PWM 波也有正有负，其幅值只有dU两种电平。同样在调制信号Ur和载波信号Uc的交点时刻控制器件的通断。Ur正负半周，对各开关器件的控制规律相同。当Ur Uc 时，给 V1 和 V4 导通信号，给 V2 和 V3 关断信号。如oi0，V1 和 V4 通，如oi0，VD1 和 VD4 通，oU=dU。当UrUc时，给 V2 和 V3 导通信号，给 V1 和 V4 关断信号。如oi0，VD2 和 VD3 通，oU=-dU。这样就得到图 2 所示的双极性的 SPWM 波形。图 4 是采用 IGBT 作为开关器件的三相桥式电压型逆变电路。图 4 三相 PWM 逆变电路当crUUU时，给 V1 导通信号，给V4 关断信号，2/dUNUU；当crUUU时，给 V4 导通信号，给 V1 关断信号，2/dUNUU。当给 V1(V4)加导通信号时，可能是 V1(V4)导通，也可能是 VD1(VD4)导通。UNU、VNU和WNU的 PWM 波形只有2/dU两种电平。UVU波形可由UNU、VNU得出，当 1 和 6 通时，UVU=Ud，当 3 和 4 通时，UVU=Ud，当 1 和 3 或 4 和 6通时，UVU=0。VWU、WUU的波形可同理得出。4.电路仿真及分析4.1 双极性 SPWM 波形的产生：仿真电路图如图5 所示。在 Simulink 的“Source”库中选择“Clock”模块，以提供仿真时间t,乘以rf2后再通过一个“sin”模块即为 sint，乘以调制比 m 后可得到所需的文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1第-5-页 共 13 页正弦波调制信号。三角载波信号由“Source”库中的“Repeating Sequence”模块产生,参数设置为【0 1/cf/4 3/cf/4 1/cf】和【0 1-1 0】，便可生成频率为cf的三角载波。将调制波和载波通过一些运算与比较，即可得出图 6 所示的双极性 SPWM 触发脉冲波形。图 5 双极性 PWM 逆变器触发脉冲发生电路图 6 双极性 SPWM 波形从上图可以看出，对于双极性SPWM 控制方式，在正弦调制波半个周期内，三角载波在正负极性之间连续变化，SPWM 波也是在正负之间变化。文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1第-6-页 共 13 页4.2三相 SPWM 波形的产生：仿真图如下所示。图 7 三相 SPWM 逆变器触发脉冲发生电路本文中采用单三角载波和三个幅值、频率相同相位互差120 度的三相交流波形作为调制波。同上，在Simulink 的“Source”库中选择“Clock”模块，以提供仿真时间t,乘以rf2后再通过一个“sin”模块即为 sin t，乘以调制比m 后可得到所需的正弦波调制信号，通过设置即可产生三相正弦波信号。三角载波信号由“Source”库中的“Repeating Sequence”模块产生,参数设置为【0 1/cf/4 2/cf/4 1/cf】和【-1 0 1-1】，便可生成频率为cf的三角载波。将调制波和载波通过一些运算与比较，即可得出三相SPWM 触发脉冲波形。三角载波与调制波的波形如图8 所示：文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1第-7-页 共 13 页图 8 三相调制波与三角载波波形4.3双极性 SPWM 控制方式的单相桥式逆变电路仿真及分析双极性 SPWM 方式下的单相桥式逆变电路主电路图如下图所示：图 9 单相桥式 PWM 逆变器主电路图为了使仿真界面简洁，仿真参数易于修改，通用桥（Universal Bridge）的触发脉冲是图5 所示部分封装成的子模块。对于单相SPWM 控制方式的逆变电路，有如下重要参数：载波比 N载波频率cf与调制信号频率rf之比，即 N=cf/rf。调制度 m调制波幅值rA与载波幅值cA之比，即 mrA/cA。文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1文档编码:CO10K1T1R8L3 HV2C9I7H7A9 ZF1B4G7Y3Y1第-8-页 共 13 页输出电压基波幅值m1dU=dmU，其中，dU为直流侧电源电压。将调制度 m 设置为 0.9，调制波频率设为50Hz，载波频率设为基波的30 倍（载波比 N=30），即 1500Hz，仿真时间设为 0.04s，在 powergui 中设置为离散仿真模式，采样时间设为1e-006s，运行后可得仿真结果，建立m文件，程序如下所示：（示波器名称设置为inv）subplot(2,1,1);plot(inv.time,inv.signals(1).values);title(输出电压波形);subplot(2,1,2);plot(inv.time,inv.