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SimPowerSystems

Modeling Electrical Power Systems

SimPowerSystems provides libraries for modeling electric machines, transformers, and power converters. You can connect components, such as generators, transmission lines, breakers, and motors, to model electrical power systems. Application-specific libraries are also provided, enabling you to model electric drives, aircraft power networks, and renewable energy systems. Connecting these systems with control systems modeled in Simulink lets you test integrated electrical power systems in a single environment.

In addition to the traditional input-output or signal flow connections used in Simulink, SimPowerSystems uses physical connections that permit the flow of power in any direction. Models of electrical power systems built using physical connections (or acausal models) closely resemble the network they represent, and are easy to understand and share.

You can define your three-phase connections using individual connections for each phase, enabling you to perform tests such as injecting a single-line-to-ground fault. You can also create single-line diagrams, where the three phases are represented by a single line, making the diagram easy to read. SimPowerSystems components are parameterized using the per-unit system, which is widely used in the power system industry and simplifies the parameterization and analysis of your system.

SimPowerSystems model of a permanent magnet synchronous motor and inverter sized for use in a typical hybrid vehicle.
SimPowerSystems model (left) of a permanent magnet synchronous motor and inverter sized for use in a typical hybrid vehicle. The model includes the electrical connections (single-phase and three-phase) and signal flow connections, and the scope (right) shows the stator currents in the PMSM.
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Aircraft Power Network Development with Model-Based Design

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