— SEMIS Simulation Tool Diode Based EV Charging Converters User manual
— INTRODUCTION SEMIS is a web-based semiconductor simulation tool providing a thermal calculation of the semiconductor losses for common converter circuits. The simulation simplifies significantly the selection of the switching device and enables the optimal selection of semiconductors for further investigations. The SEMIS Simulation Tool is a user-friendly online application found on ABB Semiconductors website www.abb.com/semiconductors/semis SEMIS users select from a substantial selection of topologies.
— TABLE OF CONTENTS 1. DIODE BASED EV CHARGING CONVERTERS ................................................................................. 2 2. OVERVIEW .......................................................................................................................................... 3 3. SIMULATION SETTINGS .................................................................................................................... 4 3.2 3.3 3.1.1 Rectifier settings .....................................
— LIST OF FIGURES Figure 1: Page layout of Diode based EV charging converter in the ABB semiconductors website. ................................ 3 Figure 2 Rectifier settings input blocks .............................................................................................................................. 4 Figure 3 Converter settings input blocks ...........................................................................................................................
Diode Based EV Charging Converters 1. DIODE BASED EV CHARGING CONVERTERS Electric vehicle chargers are typical AC-DC converters based on diodes, IGBTs or thyristors at the first stage and DC-DC converters at the second stage to suit the battery charging voltage and to improve the power quality.
Overview 2. OVERVIEW Figure 1: Page layout of Diode based EV charging converter in the ABB semiconductors website.
Simulation settings 3. SIMULATION SETTINGS 3.1.1 Rectifier settings The user can choose between the 2 types of rectifiers that are mentioned in section 3.1.1. The user may input the RMS value of the AC voltage per phase for both 3 phase and 1 phase source. The supply frequency can be changed – this usually is either 50Hz or 60Hz. Figure 2 Rectifier settings input blocks 3.1.2 RECTIFIER TYPE Choose between 1ph diode or 3ph diode bridge Selection AC VOLTAGE PER PHASE AC voltage input Range 230 ..
Simulation settings 3.2 IGBT settings Figure 4 Thermal settings and device selection Heat Sink Thermal Resistance Range 0.0001 .. 0.5 K/W Definition of thermal resistance of the cooling system applied. Remark: The value entered is attributed to each individual switch is shown in the electrical configuration schematic of the IGBT module datasheet.
Simulation settings 3.2.2 Matching Diodes Once the IGBT’s are selected, the user can do the Rectifier Diodes selection for the front end rectifier based on the voltage rating chosen. By clicking on the product code name the user may access the datasheet from the ABB website. Figure 6 Matching Rectifier Diodes for selection 3.
Simulation Results 4. SIMULATION RESULTS The simulation results are displayed in two different ways for all selected articles simulated. To hide curves of selected articles, unselect in the table “Results History” 4.
Simulation Results 4.1.2 Parameters values indication Tabular indication of graphical waveforms values according to the cursor position selected. Values are indicated for each parameter with the corresponding color of the waveform. The third column shows the difference between the two cursors per parameter. Figure 10 Tabular indication of cursor position graph values Remark: The numerical values of Phase Voltage/Current at the position of respective cursors are shown in the Table.
Simulation Results Device Losses & Temperatures Figure 11 Device Losses & Temperatures Switching Loss Single IGBT or Diode Losses during turn on and turn off events (dynamic) Conduction loss Single IGBT or Diode Losses during on state (static) Combined losses Sum of single IGBT or Diode switching and conduction loss. Converter losses Sum of all IGBT and Diode losses % Losses Defined as the (%) ratio of calculated combined converter losses with respect to the total output power and losses i.e.
Simulation Results Figure 12 Definition of Tvj before the last switch AC-DC parameters Figure 13 Converter AC-DC Parameters Real power Active power supplied by the source including the thermal losses Phase Voltage (RMS) AC voltage per phase at the source Phase current (RMS) AC current drawn at the source by the load Input Frequency (Hz) Frequency of the source voltage DC-DC parameters Figure 14 Converter DC-DC Parameters Input DC power Active power supplied by the source including the thermal loss
Alerts & Features 5. ALERTS & FEATURES The system verifies results and generated warning messages in case of limits are violated.
Applied Calculations 6. APPLIED CALCULATIONS 6.1 Input Parameter Definitions VDC Input DC voltage/Rectifier output VOUT Output DC voltage Vph Single phase RMS voltage Pout Load power F_Hz AC side frequency (50/60Hz) Fc_Hz 6.2 Control PWM switching frequency DC output voltage of the Rectifier 𝑉𝐷𝐶 = √2 ∗ 𝑉𝑝ℎ 1 phase diode bridge rectifier: 𝑉𝐷𝐶 = √2 ∗ √3 ∗ 𝑉𝑝ℎ 3 phase diode bridge rectifier: 6.
Applied Calculations For Boost converter: 6.6 1 (1−𝐷)2 𝑉2 ∗ 𝑃 𝐷𝐶 𝑂𝑈𝑇 Design of the inductance for Continuous Conduction Mode (CCM) of the converter For Buck converter: For Boost converter: 6.7 𝑅𝑂𝑈𝑇 = 𝐿𝑏 = 𝐿𝑏 = 𝑅𝑑 ∗(1−𝐷) 2∗𝐹𝑐_𝐻𝑧 𝑅𝑑 ∗𝐷∗(1−𝐷)2 Converter output smoothing capacitor expressions For Buck converter: For Boost converter: SEMIS – ABB Semiconductors 𝐶𝑠 = 𝐶𝑠 = 2∗𝐹𝑐_𝐻𝑧 (1−𝐷) 8∗𝐿𝑏∗0.02∗𝐹𝑐_𝐻𝑧 2 (𝐷) 0.
Validation of PLECS Results with PSCAD 7. VALIDATION OF PLECS RESULTS WITH PSCAD To ensure supplied simulation results are reliable, each of the Diode rectifier models in combination with either buck or boost on the secondary is validated with another simulation platform. The circuit topology is reconstructed in PSCAD to validate the results obtained from the SEMIS web simulation tool.
Validation of PLECS Results with PSCAD Results analysis according settings Topology Tester: Date Device used (.xml) Limit acceptance level Green / Orange / Red SEMIS 25 - 3Ph Diode Rectifier + Buck/Boost Sravan Durga April 8, 2020 Instructions 1. Enter all values according the final results table in the column SEMIS 2. Enter all values according the final results from the PSCAD in the column PSCad 3.
— 8. USER MANUAL REVISION HISTORY Rev. Page Change Description Date / Initial 1.0 all Initial version new design 2020-15-04 PGGI/SD — 9. SIMULATION SOFTWARE RELEASE HISTORY Rev. New topic Fixed defects Tvj influence Date 1.
— Contact ABB Power Grids Switzerland Ltd. Semiconductors Fabrikstrasse 3 5600 Lenzburg, Switzerland Phone: +41 58 586 1419 Fax: +41 58 586 1306 E-Mail: abbsem@ch.abb.com abb.com/semiconductors Note We reserve the right to make technical changes or modify the contents of this document without prior notice. With regard to purchase orders, the agreed particulars shall prevail. ABB does not accept any responsibility whatsoever for potential errors or possible lack of information in this document.
