Circuit outputting 50Hz single-phase 220V and three-phase 380V high-power alternating currents at same time on basis of IPM

Abstract

The invention provides a circuit outputting 50Hz single-phase 220V and three-phase 380V high-power alternating currents at the same time on the basis of an IPM. Any phase and a center line are led out from three-phase four lines for obtaining the 50Hz single-phase 220V alternating currents. A center line of the output end is connected with neutral points (the connecting point C1 and the connecting point C2) in a 650V direct-current circuit through a fourth inductor L4. On one hand, the requirement for phase voltage deviation when loads are asymmetrical is met, and on the other hand, electromagnetic interference on a digital control circuit and external power utilization equipment from an IPM circuit is effectively restrained. According to the circuit, on one hand, the 50Hz single-phase 220V and three-phase 380V high-power alternating currents (single-phase 4kW and three-phase 12kW) can be output at the same time, and on the other hand, the quality of an output power source meets the requirement of the national army standard. The circuit can meet the power supply needs on the condition that single-phase equipment and three-phase equipment exist at the same time and on the condition without mains supply in the military and civilian fields, and has already been successfully applied to research and development of vehicle-mounted electricity-generating equipment of a certain type guided missile launching vehicle.

Description

technical field [0001] The invention relates to an IPM-based high-power AC circuit that simultaneously outputs 50Hz single-phase 220V and three-phase 380V, and belongs to the field of three-phase inverter circuits. Background technique [0002] At this stage, the power supply systems of special vehicles such as emergency communication vehicles, explosion-proof command vehicles, RVs, and combat command vehicles widely used in the military and civilian fields mainly include fuel power generation power supply systems and power generation power supply systems. Among them, the fuel-fired power generation system is gradually replaced by the power generation system in the selection of power supply systems for some small special vehicles due to its high noise and large size. Power generation systems currently on the market can only output single-phase 220V AC. As the functions of special vehicles become more and more complex, there are more types of equipment on the vehicle, includ...

AI Technical Summary

Problems solved by technology

Secondly, it solves the problem of excessive phase voltage deviation under the condition of asymmetrical load at the output end of the three-phase four-wire system

Secondly, it solves the problem of electromagnetic interference to its own digital control circuit and external electrical equipment when the IPM circuit is working, and meets the situation where single-phase equipment and three-phase equipment exist at the same time in the field in the military and civilian fields or in other environments where the mains power cannot be used. Power requirements under

Images