PLECS: LLC Variable Frequency Resonant Converter 1 概述(Overview) 本演示展示了在频率控制下运行的隔离直流/直流谐振变换器。变换器的输出电压通过改变半导体的开关频率来控制。零电压开关(ZVS)用于减少开关损耗,允许变流器在更高的开关频率下运行。 图1:LLC变频谐振变换器 注意:此模型包含可从以下位置访问的模型初始...
3 变频PWM信号生成/Frequency Variable PWM Signal Generation 可以在STM32 TSP支持的所有目标上生成变频PWM信号。您可以在“变频PWM”子系统中找到四个特定于目标的子系统。 图2:生成变频PWM信号的顶级示意图 每个子系统包括一个模型,用于通过使用STM32目标组件库中的标准PWM块或HRTIM块来生成变频PWM信号。 3.1 PWM...
Question: Which analysis tool should you use for this model's loop gain analysis? Answer: Since the controller generates variable frequency PWM carriers, the system period is unknown before analysis. In this case, steady-state analysis cannot converge, and AC scanning cannot be used. The multi-...
PWM Generation - Variable phase shift and frequency? pwm,variable-phase 4691September 18, 2024 Thermal modeling of a transformer thermal-model,transformer 1136September 12, 2024 Question about thermal simulation thermal 1135September 12, 2024
Also, the high-fidelity MCU peripheral modules, discussed in [1], allow engineers to easily implement variable-frequency PWM generators. In this article the design of a full-bridge LLC converter with variable-frequency operation is discussed. Simulation results representing converter operation under ...
For a high fidelity PWM model, with a full duty cycle resolution, we either need a fixed-step solver with a step size de- fined by the counter period or a variable-step solver and the ability to invoke a solver step at every pe- riodic and dynamic event. The features required for ...
4. ms Sine Wave Amplitude: 1 Frequency: 60 Symmetrical PWM fc: 20e3 Phase: [0 0.5] Units: Hertz, p.u. > 0 < 0 + a V: 350 V -b Ref L: 2.5e-3 A Am1 L: 2.5e-3 Figure 8: A circuit using the Model Reference block Scope V: 340 w: 2*pi*60 Your Task: 1 Open a ...
aerodynamics of the wind turbine and the me-chanical dynamics of the induction machine are in-cluded to extend the use of the model to simulating system operation under variable wind speed con-ditions.For longer simulations that include these slower mechanical and wind dynamics,an averaged PWM ...
This does not only involve parameters tied to the application, such as the control frequency or the PWM phase-shifts, but also hardware-related quantities, like the computation time of the algorithm or the conversion delay of the ADCs. Hover to find out more. SYSTEM MODEL The control model,...
栅极信号由PWM组件生成,其中左腿和右腿占空比是PWM块的输入。占空比在[0,1]范围内,用于生成栅极信号。可以从PWM块参数窗口的“Main”选项卡配置 “Carrier type, Carrier frequency and Blanking time”参数。请注意,ePWM模块的输入会产生互补的PWM对,即ePWMxA和ePWMxB将极性相反,不包括消隐时间。