Sine wave output inverter power supply

一种正弦波输出的逆变电源

Abstract

本发明涉及一种正弦波输出的逆变电源,其特征是:它至少包括:直流电压端、H桥逆变电路和控制电路,H桥逆变电路包括四个功率管Q1~Q4和四个二极管D1~D4,四个功率管Q1~Q4采用IGBT管,其中Q1和Q2作为上半桥电路,Q3和Q4作为下半桥电路,上半桥电路的两只IGBT管集电极接电源正极,上半桥电路的IGBT管Q1和Q2发射极分别与下半桥电路的IGBT管Q3和Q4集电极分别电连接,Q1和Q3的电连接点与Q2和Q3的电连接点分别与变压器T初极端电连接,下半桥电路的IGBT管Q3和Q4发射极接电源地。本发明是一种安全可靠,性高的正弦波输出的逆变电源。
The invention relates to a sine wave output inverter power supply. The sine wave output inverter power supply is characterized by at least comprising a direct current voltage end, an H bridge inverter circuit and a control circuit. The H bridge inverter circuit comprises four power tubes Q1-Q4 and four diodes D1-D4, and insulated gate bipolar translator (IGBT) tubes are adopted as the four power tubes Q1-Q4, wherein the Q1 and the Q2 serve as upper half-bridge circuits, and the Q3 and the Q4 serve as lower half-bridge circuits. Collector electrodes of two IGBT tubes of the upper half-bridge circuits are connected with a power source anode, emitting electrodes of the IGBT tubes Q1 and Q2 of the upper half-bridge circuits are respectively electrically connected with the IGBT tubes Q3 and Q4 of the lower half-bridge circuits, an electric connection point of the Q1 and the Q3 and an electric connection point of the Q2 and the Q4 are respectively electrically connected with a primary electrode end of a transformer T, and emitting electrodes of the IGBT tubes Q3 and Q4 of the lower half-bridge circuits are connected with power ground. The sine wave output inverter power supply is safe, reliable and high in performance.

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