AAC-based multi-module voltage source type inverter
A voltage source type and inverter technology, applied in the field of multi-module voltage source type inverters, can solve the problems of difficult integrated design of devices, low circuit work efficiency, and large filter volume, etc., to achieve stable voltage, reduce Current ripple, the effect of improving system efficiency
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[0032] In order to make the objects and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0033] Such as figure 1As shown, the embodiment of the present invention provides an AAC-based multi-module voltage source inverter, including an LC filter and a full-bridge structure composed of at least four AAC bridge arms, and each AAC bridge arm includes a H bridge unit, a bridge arm reactor (Lr1, Lr2, Lr3, Lr4) and a conduction switch (DS1, DS2, DS3, DS4). For the H bridge unit, it consists of a base frequency bridge arm and a high frequency bridge arm. The base frequency bridge arm is composed of two full-control switches with anti-parallel diodes (Db1-Db8, Dh1-Dh8) in series: a full The emitter of the control switch is connected to the...
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