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Grid Connected Inverter MATLAB Simulation

Most use cases of automotive electrification revolve around grid to vehicle applications. This power transfer scheme involves a charger which is connected to the grid that provides high voltage DC to a vehicle.

The following page describes a MATLAB-SIMULINK model of an inverter synced with a utility grid’s fundamental frequency of 60 Hz. Typical applications of this technology include emergency short term residential power, secondary power from nontraditional sources such as automobiles, and grid power factor stability.

Single Phase VFD Controller

In many industrial applications electrical motors are used as a means to transport product or operate processes. Rather than operating the motor in a fully on or off stage a variable frequency drive is used to vary the torque/speed profiles in accordance with the intended load.

This type of drive allows for precise control of a motor by modulating its frequency instead of the motor operating at a fixed frequency/speed. VFDs allow for decreased stress on the motor due to slowed start/stop commands.

Power Protection and Supply Circuit Design

As an EE the ability to protect circuits from unwanted transients and electrical over stress (EOS) is vital. These occurrences of EOS can be generated by a plethora of different stimuli including reverse polarity connections, short circuits, exposure to lighting, and more.

The following page outlines a galvanically isolated power supply circuit that incorporates various circuity for protection against the following:

→ Reverse Voltage

→ Over Voltage/Current: Including ESD and Transients