LOW FREQUENCY CHARACTERIZATION OF PWM CONVERTERS.

被引：33

作者：

Ngo, Khai D.T. ^{[1
]}

机构：

[1] GE, Schenectady, NY, USA, GE, Schenectady, NY, USA

来源：

IEEE Transactions on Power Electronics | 1986年 / PE-1卷 / 04期

关键词：

ELECTRIC CONVERTERS; FREQUENCY - Components - MATHEMATICAL TECHNIQUES - State Space Methods - PULSE WIDTH MODULATION - Mathematical Models;

D O I：

10.1109/TPEL.1986.4766314

中图分类号：

学科分类号：

摘要：

The describing state-space equation is discussed as a technique to characterize low-frequency behavior of pulse-width modulation (PWM) dc and ac converters, inverters, rectifiers, and cycloconverters. The two-terminal basic switching elements (or throws) in a converter are grouped into multiple-throw switches and assigned switching functions. Switching (state-space) equations are obtained by using switching functions and inspecting the topology, without having to analyze all switched circuits one by one. Describing equations result from switching equations when switching functions are replaced by the respective duty ratios, and exact variables (excitations, states, and outputs) are replaced by respective low-frequency components. Describing equations of ac converters are transformed to rotating coordinates so that they are time-invariant (as those of dc converters).

引用

页码：223 / 230