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US 2025/0018808 A1Published application
Multilevel inverter current sensing
AssigneeGM Global Technology Operations LLC
InventorsMuhammad Hussain Alvi, Chandra S. Namuduri, Junghoon Kim, Yilun Luo
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Abstract
A conversion system includes a conversion device including a multilevel inverter configured to generate two alternating current (AC) output currents, a current sensor configured to sample a current through the multilevel inverter, or from the multilevel inverter, during a switching cycle, and a processor configure to estimate both of the two AC output currents based on the sampled current from the current sensor.
Claims20
A conversion system, comprising:
- a conversion device including a multilevel inverter configured to generate two alternating current (AC) output currents;
- a current sensor configured to sample a current through the multilevel inverter, or from the multilevel inverter, during a switching cycle;
- and
- a processor configure to estimate both of the two AC output currents based on the sampled current from the current sensor.
1 more element
A method of transferring electrical power, comprising:
- receiving an input current from a direct current (DC) source at a conversion device including a multilevel inverter;
- converting the input current by the multilevel inverter to generate two alternating current (AC) output currents, wherein the converting includes performing a series of switching cycles;
- sampling a current through the multilevel inverter, or from the multilevel inverter, during a switching cycle by a single current sensor;
- and
- estimating both of the two AC output currents based on the sampled current from the single current sensor.
2 more elements
A vehicle system, comprising:
- a battery system;
- a conversion device connected to the battery system and including a multi-phase inverter module, the multi-phase inverter module including a multilevel inverter configured to output two alternating current (AC) output currents;
- and
- a processor configured to perform a method including:
- converting an input current by the multilevel inverter to generate the two AC output currents, wherein the converting includes performing a series of switching cycles;
- sampling a current through the multilevel inverter, or from the multilevel inverter, during a switching cycle by a single current sensor;
- and
- estimating both of the two AC output currents based on the sampled current from the single current sensor.
5 more elements
Dependencies are inferred from the claim text.