AN 973: Three-phase Boost Bidirectional AC/DC Converter for Electric Vehicle (EV) Charging

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ID 733436
Date 6/23/2022
Public
Document Table of Contents
Document Table of Contents x
1. Three-phase Boost Bidirectional AC/DC Converter for Electric Vehicle (EV) Charging Design Example Overview 2. Downloading and Installing the Design Example 3. Model Description 4. FPGA Resource Use Comparison 5. Locating Top-level VHDL Wrapper 6. Generating HDL Code with MATLAB and HDL Coder 7. Simulink Simulation Results 8. Document Revision History for AN 973: Three-phase Boost Bidirectional AC/DC Converter for EV Charging
2. Downloading and Installing the Design Example x
2.1. Software Requirements 2.2. Hardware Requirements 2.3. Downloading and Installing the Design
3. Model Description x
3.1. Simscape* Model 3.2. Simulink* Model 3.3. HDL Inputs, Outputs, and Parameters
3.2. Simulink* Model x
3.2.1. Controller Block 3.2.2. Power Electronics Block Model 3.2.3. Source Voltage Generator Block
3.2.1. Controller Block x
3.2.1.1. Pulse Width Modulation (PWM) Controller 3.2.1.2. Phase-locked Loop (PLL) 3.2.1.3. Sampling Circuit 3.2.1.4. Clarke and Park Transforms
3.2.2. Power Electronics Block Model x
3.2.2.1. Six-switch Power Converter 3.2.2.2. Inductors 3.2.2.3. Output Capacitor
6. Generating HDL Code with MATLAB and HDL Coder x
6.1. Generating HDL and QPF Using MATLAB Scripts 6.2. Generating HDL and QPF Using MATLAB GUI Tools
1. Three-phase Boost Bidirectional AC/DC Converter for Electric Vehicle (EV) Charging Design Example Overview
2. Downloading and Installing the Design Example
3. Model Description
4. FPGA Resource Use Comparison
5. Locating Top-level VHDL Wrapper
6. Generating HDL Code with MATLAB and HDL Coder
7. Simulink Simulation Results
8. Document Revision History for AN 973: Three-phase Boost Bidirectional AC/DC Converter for EV Charging

7. Simulink Simulation Results

This section shows the simulation results from the bidir_rectifier.slx model that you can find inside the matlab/Simulink directory.

The following figure shows how the variation in the output load immediately results in variation in the load current. By constantly changing the output load, you can evaluate the system response. This change is equivalent to having different vehicles connected to the charging station unit. In this simulation, the load current constantly changes from ~30 A to ~125 A to evaluate the output voltage response time.

Figure 23. Load Changes in Simulink Simulation

The following figure shows how the AC/DC converter keeps the output voltage around 800 V, as specified for the input reference voltage. Every time the load changes, the controller compensates for the changes and adjusts to meet the target reference voltage of 800 V. It shows that the three-phase boost bidirectional AC/DC converter for EV charger is well controlled when there is variation in the output load with reduced overshot and fast settling time.

Figure 24. AC/DC Converter Output Voltage Response
Level Two Title