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首页> 外文会议>2015 International Conference on Energy Systems and Applications >THD reduction in high power V/F drives by using hybrid synchronized Space Vector Pulse Width Modulation
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THD reduction in high power V/F drives by using hybrid synchronized Space Vector Pulse Width Modulation

机译：通过使用混合同步空间矢量脉冲宽度调制来降低大功率V / F驱动器的THD

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In modern power converters the PWM strategy shows the major concern in reduction of switching losses and Total Harmonic Distortion (THD). In high power traction drives, the switching frequency has to be reduced to limit the switching losses, as it becomes difficult to arrange cooling for the inverter if the switching losses are huge. Usually the maximum switching frequency is limited. There are many PWM techniques available to reduce the THD in inverter output among them Space Vector Pulse Width Modulation (SVPWM) gives better performance than any other techniques. Due to flexibility in the choice of switching state in SVPWM, there can be possibility of the six different SVPWM strategies, each having good performance at particular range of modulation index. By using all six strategies a new hybrid SVPWM strategy has been developed and the performance is compared with other PWM techniques for v/f drive of maximum switching frequency 450HZ with MATLAB13a
机译：在现代功率转换器中，PWM策略主要表现在降低开关损耗和总谐波失真（THD）。在大功率牵引驱动中，必须降低开关频率以限制开关损耗，因为如果开关损耗很大，则很难为逆变器安排冷却。通常，最大开关频率是有限的。有许多PWM技术可用于降低逆变器输出中的THD，其中空间矢量脉冲宽度调制（SVPWM）提供的性能优于任何其他技术。由于SVPWM中切换状态选择的灵活性，可能存在六种不同的SVPWM策略，每种策略在特定的调制指数范围内都具有良好的性能。通过使用所有六种策略，开发了一种新的混合SVPWM策略，并将其性能与其他PWM技术进行了比较，以使用MATLAB13a对最大开关频率为450HZ的v / f驱动

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