三电平双有源桥变换器的电容电压平衡与直流偏置抑制增强方法

Three-level dual active bridge converters based on neutral point clamped legs reduce the voltage stress of power devices compared to two level. However, maintaining the capacitor voltages balanced in a wide operating range is the critical issue of this converter. To mitigate this problem, a PI feedback loop of voltage error is known, but it results in poor dynamic performances. Complementary switc...