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首页> 外文期刊>IEEE Transactions on Power Electronics >Current-clamped, modified series resonant DC-link power converter for a general purpose induction motor drive
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Current-clamped, modified series resonant DC-link power converter for a general purpose induction motor drive

机译：用于通用感应电动机驱动的电流钳位，改进的串联谐振直流母线功率转换器

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摘要

A new AC/AC power converter topology, in which all the switches operate in a resonant fashion to reduce switching losses, is proposed. The topology enables conduction-period control of individual current pulses, whereby pulse-width modulation (PWM) could be achieved to a fair degree of accuracy with the associated controller. The scheme implements current peak (resonant) limiting by a simple diode clamp. Improved switch utilization (voltage /spl times/ current) and reduced part-count could be cited as the merits of the circuit over the previous soft-switched current-sourced AC/AC configurations. It is experimentally verified that the output PWM controller could be used to implement constant V/F operation, and the results are presented. In-depth design criteria for the topology that gives optimized voltage stresses are presented. A charge-based, line current feed-forward, mode-controller is introduced at the input and digitally verified. Feasibility of the simultaneous control over both input power-factor and smooth input-output line currents are studied and the digital verification is presented.
机译：提出了一种新的AC / AC电源转换器拓扑，其中所有开关均以谐振方式工作以减少开关损耗。该拓扑结构可以对各个电流脉冲进行传导周期控制，从而可以通过关联的控制器以相当高的精度实现脉宽调制（PWM）。该方案通过一个简单的二极管钳位来实现电流峰值（谐振）限制。与以前的软开关电流源AC / AC配置相比，改进的开关利用率（电压/ spl次/电流）和减少的零件数量可以作为电路的优点。通过实验验证了输出PWM控制器可用于实现恒定V / F操作，并给出了结果。给出了可提供最佳电压应力的拓扑的深入设计标准。在输入端引入了基于电荷的线电流前馈模式控制器，并进行了数字验证。研究了同时控制输入功率因数和平滑输入输出线路电流的可行性，并提出了数字验证方法。

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