Direct power control of grid connected voltage source converters

L. Xu, D. Zhi, L. Yao

Research output: Contribution to conferencePaper

43 Citations (Scopus)

Abstract

This paper proposes a new direct power control (DPC) strategy for grid connected voltage source converters (VSC). Similar to an electrical machine, source and converter flux are defined as the integration of the source and converter voltage respectively. Based on the defined flux, the proposed DPC scheme directly calculates the required converter voltage to eliminate the active and reactive power errors within each fixed time period. Thus, no extra power or current control loops are required, thereby simplifying the system design and improving transient performance. Constant converter switching frequency is achieved using space vector modulation which eases the design of the power converter and the AC harmonic filter. Simulation results for a 2 MW VSC system are provided to demonstrate the effectiveness and robustness of the proposed control strategy during variations of active and reactive power and AC voltage dip.

Conference

Conference IEEE Power Engineering Society General Meeting, 2007.
CountryUnited States
CityTampa
Period24/06/0728/06/07

Fingerprint

Power control
Electric potential
Reactive power
Fluxes
Electric current control
Power converters
Switching frequency
Vector spaces
Systems analysis
Modulation

Keywords

  • direct power control
  • grid connected voltage
  • source converters

Cite this

Xu, L., Zhi, D., & Yao, L. (2007). Direct power control of grid connected voltage source converters. Paper presented at IEEE Power Engineering Society General Meeting, 2007., Tampa, United States. https://doi.org/10.1109/PES.2007.385753
Xu, L. ; Zhi, D. ; Yao, L. / Direct power control of grid connected voltage source converters. Paper presented at IEEE Power Engineering Society General Meeting, 2007., Tampa, United States.6 p.
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abstract = "This paper proposes a new direct power control (DPC) strategy for grid connected voltage source converters (VSC). Similar to an electrical machine, source and converter flux are defined as the integration of the source and converter voltage respectively. Based on the defined flux, the proposed DPC scheme directly calculates the required converter voltage to eliminate the active and reactive power errors within each fixed time period. Thus, no extra power or current control loops are required, thereby simplifying the system design and improving transient performance. Constant converter switching frequency is achieved using space vector modulation which eases the design of the power converter and the AC harmonic filter. Simulation results for a 2 MW VSC system are provided to demonstrate the effectiveness and robustness of the proposed control strategy during variations of active and reactive power and AC voltage dip.",
keywords = "direct power control, grid connected voltage, source converters",
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Xu, L, Zhi, D & Yao, L 2007, 'Direct power control of grid connected voltage source converters' Paper presented at IEEE Power Engineering Society General Meeting, 2007., Tampa, United States, 24/06/07 - 28/06/07, . https://doi.org/10.1109/PES.2007.385753

Direct power control of grid connected voltage source converters. / Xu, L.; Zhi, D.; Yao, L.

2007. Paper presented at IEEE Power Engineering Society General Meeting, 2007., Tampa, United States.

Research output: Contribution to conferencePaper

TY - CONF

T1 - Direct power control of grid connected voltage source converters

AU - Xu, L.

AU - Zhi, D.

AU - Yao, L.

PY - 2007/7/23

Y1 - 2007/7/23

N2 - This paper proposes a new direct power control (DPC) strategy for grid connected voltage source converters (VSC). Similar to an electrical machine, source and converter flux are defined as the integration of the source and converter voltage respectively. Based on the defined flux, the proposed DPC scheme directly calculates the required converter voltage to eliminate the active and reactive power errors within each fixed time period. Thus, no extra power or current control loops are required, thereby simplifying the system design and improving transient performance. Constant converter switching frequency is achieved using space vector modulation which eases the design of the power converter and the AC harmonic filter. Simulation results for a 2 MW VSC system are provided to demonstrate the effectiveness and robustness of the proposed control strategy during variations of active and reactive power and AC voltage dip.

AB - This paper proposes a new direct power control (DPC) strategy for grid connected voltage source converters (VSC). Similar to an electrical machine, source and converter flux are defined as the integration of the source and converter voltage respectively. Based on the defined flux, the proposed DPC scheme directly calculates the required converter voltage to eliminate the active and reactive power errors within each fixed time period. Thus, no extra power or current control loops are required, thereby simplifying the system design and improving transient performance. Constant converter switching frequency is achieved using space vector modulation which eases the design of the power converter and the AC harmonic filter. Simulation results for a 2 MW VSC system are provided to demonstrate the effectiveness and robustness of the proposed control strategy during variations of active and reactive power and AC voltage dip.

KW - direct power control

KW - grid connected voltage

KW - source converters

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Xu L, Zhi D, Yao L. Direct power control of grid connected voltage source converters. 2007. Paper presented at IEEE Power Engineering Society General Meeting, 2007., Tampa, United States. https://doi.org/10.1109/PES.2007.385753