Review and Selection Strategy for High-Accuracy Modeling of PWM Converters in DCM

Table 1

Summary of small signal modeling methods.

Method name	Order	Model type
Conventional state-space averaging (SSA) [1]	Reduced order (low accuracy)	Analytical equation
Converter cell [2]	Reduced order (low accuracy)	Equivalent circuit
Full-order SSA [3, 8, 11, 12, 20]	Full order (high accuracy)	Analytical equation
Circuit averaging (CA) [4, 5, 8–10, 13, 14, 17–19, 21, 22]	Full order (high accuracy)	Equivalent circuit
Improved SSA [6, 7, 15, 16]	Full order (high accuracy)	Analytical equation