Sliding-Mode Current Control with Exponential Reaching Law for a Three-Phase Induction Machine Fed by a Direct Matrix Converter

The direct matrix converter (DMC) is considered to be an exciting power converter topology option for electric motor drives in industrial applications (elevators, hoists and cranes) and applications where size and weight are critical (e.g., the aerospace industry). Several control techniques have been developed to exploit the DMC's benefits and achieve the desired performance with classic control techniques, such as field-oriented control and direct torque control, and more sophisticated ones, such as model predictive control and sliding mode control (SMC). SMC is attractive due to its robustness and fast response. However, this control strategy suffers from a phenomenon called chattering. Thus, a solution based on the exponential reaching law (ERL) is implemented to resolve this issue. The proposed method was validated using simulation and experimental results from tests on a three-phase induction machine.

Automated summary

The direct matrix converter (DMC) is a popular power converter topology option for electric motor drives in industrial applications and critical size and weight applications, such as the aerospace industry. Various control techniques have been developed to exploit the benefits of DMC, including field-oriented control, direct torque control, model predictive control, and sliding mode control. However, sliding mode control suffers from chattering, which can be resolved using the exponential reaching law (ERL) solution. The proposed method was validated through simulation and experimental tests on a three-phase induction machine.