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单极性SPWM逆变电路仿真分析一.电路原理图图7-4工作原理二．控制信号设置1．V1和V2互补V1正半周导通V2负半周导通2.V3和V4互补SPWM波调制波：正弦波50Hz载波：三角波频率1000Hz三、电路仿真分析1.系统仿真模型2.负载参数设置ContinuouspowerguiSineWaveScope2Scope1ScopeRepeatingSequence1RepeatingSequence=RelationalOperatorRL2MultimeterNOTLogicalOperator1NOTLogicalOperatorgmCEIGBT4gmCEIGBT3gmCEIGBT2gmCEIGBT1makDiode4makDiode3makDiode2makDiode1100V3.输出电压和电流波形4.结论