# Simulation and Analysis

Analyze, tabulate, and plot harmonic data using analysis functions and Simscape™ logging variables. Simulate thermal losses due to switching events and conduction losses in semiconductors. Perform a load-flow analysis and use the results to initialize AC steady state simulation.

## Simscape Blocks

Busbar | Load flow analysis busbar connector (Since R2019b) |

Load Flow Source | Three-phase voltage source for performing load flow analysis (Since R2019b) |

## Functions

`ee_calculateFluxPartialDerivatives` | Calculate flux partial derivatives for FEM-Parameterized PMSM block |

`ee_calculateThdPercent` | Compute the total harmonic distortion (THD) percentage |

`ee_comtradeDataset` | Read and extract values from COMTRADE record (Since R2020b) |

`ee_getBillOfMaterials` | Generate report for current model and all subsystems (Since R2020b) |

`ee_getCauerFromFoster` | Get equivalent resistance and capacitance vectors for Cauer Thermal Model block from
Foster Thermal Model block (Since R2022b) |

`ee_getEfficiency` | Calculate efficiency as function of dissipated power losses |

`ee_generateIdealPMSMfluxData` | Generate tabulated flux linkage data for ideal PMSM |

`generateMotorDriveROM` | Generate reduced-order model of motor drive system (Since R2024a) |

`ee_getHarmonics` | Return harmonic orders, magnitudes, and fundamental frequency |

`ee_getNodeDvDtSummary` | Calculate maximum absolute values of terminal voltage time derivatives (dv/dt) based on logged simulation data |

`ee_getNodeDvDtTimeSeries` | Calculate rates-of-change of voltage variables |

`ee_getPowerLossSummary` | Calculate dissipated power losses and switching losses |

`ee_getPowerLossTimeSeries` | Calculate dissipated power losses and switching losses, and return time series data |

`ee_importDeviceParameters` | Import device parameters from XML file to Simscape
Electrical IGBT (Ideal, Switching), MOSFET (Ideal, Switching), and Diode
blocks (Since R2021b) |

`ee_plotHarmonics` | Plot percentage of fundamental magnitude versus harmonic order |

## Analysis Tools

Harmonic Analyzer | Analyze and plot harmonic spectrum of Simscape logging nodes |

Load-Flow Analyzer | Determine steady-state voltage magnitudes and angles and real and reactive power flows for three-phase AC, DC, or mixed AC/DC network |

## Topics

**Examine the Simulation Data Logging Configuration of a Model**Determine if data logging is enabled for your model.

**Choose a Simscape Electrical Function for an Offline Harmonic Analysis**Explore the capabilities of Simscape Electrical™ harmonic analysis functions.

**Perform an Online Harmonic Analysis Using the Simscape Spectrum Analyzer Block**Learn how to analyze harmonic distortion using the Spectrum Analyzer block.

**Perform a Power-Loss Analysis**Calculate power losses for Simscape Electrical semiconductor blocks.

**Perform a Load-Flow Analysis Using Simscape Electrical**Learn how to perform a power-flow, or load-flow, analysis for a three-phase Simscape Electrical network using the Simscape three-phase electrical domain.

**Optimize Block Settings for Simulating with the Partitioning Solver**Avoid simulation errors by configuring models for simulation with the specific solvers by using the

`ee_updateSolver`

function.**Phasor-Mode Simulation Using Simscape Components**Configure your model to use frequency-time equation formulation.