AN 995: Three-phase Boost Bidirectional AC-DC and LLC DC-DC Converter for EV Charging Design Example

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ID 784593
Date 9/15/2023
Public
Document Table of Contents
Document Table of Contents x
1. About the Three-phase Boost Bidirectional AC-DC and LLC DC-DC Converter for Electric Vehicle (EV) Charging Design Example 2. Getting started with the Design Example 3. Functional Description 4. Top-level VHDL Wrapper 5. Simulink Simulation Results 6. Document Revision History for AN 995: Three-phase Boost Bidirectional AC-DC and LLC DC-DC Converter for EV Charging Design Example
1. About the Three-phase Boost Bidirectional AC-DC and LLC DC-DC Converter for Electric Vehicle (EV) Charging Design Example x
1.1. FPGA Resource Usage
2. Getting started with the Design Example x
2.1. Software Requirements 2.2. Hardware Requirements 2.3. Downloading the Design 2.4. Installing the Design Example Templates 2.5. Programming the Board with the Design 2.6. Generating HDL Code with MATLAB and HDL Coder
2.5. Programming the Board with the Design x
2.5.1. Running the Design
2.6. Generating HDL Code with MATLAB and HDL Coder x
2.6.1. Generating HDL and QPF Using MATLAB Scripts 2.6.2. Generating HDL and QPF Using MATLAB GUI Tools
3. Functional 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. AC-DC Converter Controller 3.2.2. Power Electronics 3.2.3. Source Voltage Generator Block 3.2.4. LLC DC-DC Converter
3.2.1. AC-DC Converter Controller x
3.2.1.1. PWM Controller 3.2.1.2. PLL 3.2.1.3. Sample and Hold Block 3.2.1.4. Clarke and Park Transforms
3.2.2. Power Electronics x
3.2.2.1. Six-switch Power Converter 3.2.2.2. Inductors 3.2.2.3. Output Capacitor
1. About the Three-phase Boost Bidirectional AC-DC and LLC DC-DC Converter for Electric Vehicle (EV) Charging Design Example
2. Getting started with the Design Example
3. Functional Description
4. Top-level VHDL Wrapper
5. Simulink Simulation Results
6. Document Revision History for AN 995: Three-phase Boost Bidirectional AC-DC and LLC DC-DC Converter for EV Charging Design Example

5. Simulink Simulation Results

The simulation results for the Three-phase Boost Bidirectional AC-DC and LLC DC-DC Converter for EV Charging design example are from the bidir_rectifier_dcdc.slx model that is in the matlab/Simulink directory.
Figure 26. Load Changes in Simulink SimulationThe figure shows how the variation in the output load immediately gives variation in the load current. By changing the output load, you can evaluate the system response. In this simulation, the load current constantly changes from ~40 A to ~200 A to evaluate the output voltage response time.
Figure 27. AC-DC Converter Output Voltage ResponseThe figure shows how the AC-DC and LLC DC-DC converter keeps the output voltage around 800 V, as specified for the LLC DC-DC 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 design controls well with variations in the output load with reduced overshot and fast settling time.
Level Two Title