Apparatus for enabling an inverter to switch between modes and control method thereof

By introducing a mode switching unit and a control unit into the inverter, and utilizing dead time delay and lookup tables, the safety problem of second-order inverters during mode switching is solved, correct mode switching timing synchronization is achieved, and the stable operation of the inverter is ensured.

CN116317640BActive Publication Date: 2026-06-16HYUNDAI AUTOEVER
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HYUNDAI AUTOEVER
Filing Date
2022-12-02
Publication Date
2026-06-16

AI Technical Summary

⚠Technical Problem

Second-order inverters have safety issues when switching between modes, especially since short circuits may occur during mode switching, and it is difficult to achieve correct mode switching timing synchronization in the event of an unexpected interruption.

⚗Method used

By introducing a mode switching unit and a control unit into the inverter, the control unit performs mode switching by synchronizing the correct mode switching time according to the PWM signal output. Safety is ensured by delaying the dead time and using a lookup table, including calculating the dead time during mode switching to avoid short circuits.

🎯Benefits of technology

It achieves safety and correct mode switching timing synchronization when switching between second-order inverter modes, avoids safety issues caused by short circuits and interruptions, and ensures stable operation of the inverter.

✦ Generated by Eureka AI based on patent content.

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Abstract

An apparatus for enabling an inverter to switch between modes and a control method thereof, including: a first inverter unit; a second inverter unit; a load connected between the first inverter unit and the second inverter unit; a mode switching unit connected between the load and the second inverter unit; and a control unit configured to drive the load in a first-order inverter mode or a second-order inverter mode by performing control to turn on or turn off the mode switching unit, wherein the control unit performs mode switching according to correct mode switching timing synchronization for PWM signal output when the inverter switches between modes.
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