TY - GEN
T1 - Third-Harmonic Injection PWM Based Control Strategy for A Five-Phase Six-Leg Voltage Source Inverter with Unbalanced Loads
AU - Jiang, Shiqi
AU - Wang, Panbao
AU - Wang, Wei
AU - Wei, Wei
AU - Xu, Dianguo
N1 - Publisher Copyright:
© 2021 KIEE & EMECS.
PY - 2021
Y1 - 2021
N2 - Compared to conventional n-phase topologies, the n-phase (n+1)-leg inverters are able to work under unbalanced loading conditions. This paper investigates the control strategy of a five-phase six-leg inverter system with unbalanced loads. Based on the third-harmonic injection pulse-width modulation (PWM) method, a double-closed loop control scheme with inner current loop and outer voltage loop is applied. Compared to an open five-phase five-leg inverter system, the designed system can balance the output multi-phase voltage with unbalanced loads, then realizing the required power distribution of different phases. Meanwhile, the generalized Park transformation is utilized in the controller to convert the referenced coordinate system to a rotating one from a natural coordinate system, which contributes to make the control system have a satisfied performance. Finally, the PLECS-based simulation verifies the designed strategy.
AB - Compared to conventional n-phase topologies, the n-phase (n+1)-leg inverters are able to work under unbalanced loading conditions. This paper investigates the control strategy of a five-phase six-leg inverter system with unbalanced loads. Based on the third-harmonic injection pulse-width modulation (PWM) method, a double-closed loop control scheme with inner current loop and outer voltage loop is applied. Compared to an open five-phase five-leg inverter system, the designed system can balance the output multi-phase voltage with unbalanced loads, then realizing the required power distribution of different phases. Meanwhile, the generalized Park transformation is utilized in the controller to convert the referenced coordinate system to a rotating one from a natural coordinate system, which contributes to make the control system have a satisfied performance. Finally, the PLECS-based simulation verifies the designed strategy.
KW - Double closed-loop control
KW - Five-phase six-leg inverter
KW - Generalized Park transformation
KW - Third-harmonic injection PWM
KW - Unbalanced loads
UR - https://www.scopus.com/pages/publications/85123952276
U2 - 10.23919/ICEMS52562.2021.9634641
DO - 10.23919/ICEMS52562.2021.9634641
M3 - 会议稿件
AN - SCOPUS:85123952276
T3 - ICEMS 2021 - 2021 24th International Conference on Electrical Machines and Systems
SP - 2065
EP - 2069
BT - ICEMS 2021 - 2021 24th International Conference on Electrical Machines and Systems
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 24th International Conference on Electrical Machines and Systems, ICEMS 2021
Y2 - 31 October 2021 through 3 November 2021
ER -