DC fast charging topology in Power Electronics - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to identify the main component used in DC fast charging topology.

Power Electronics

main_component = "[1]"

Drag options to blanks, or click blank then click option'

ADC-DC Converter

BTransformer

CAC Inductor

DRectifier

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing Transformer which is mainly for AC voltage conversion.

Selecting Rectifier which converts AC to DC, not used here as main component.

The main component in DC fast charging topology is the DC-DC converter, which converts the input DC voltage to the required output voltage for charging.

2fill in blank

medium

Complete the code to specify the typical voltage range for DC fast charging.

Power Electronics

voltage_range = "[1] V"

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A100-200

B450-900

C200-450

D900-1200

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing too low voltage range like 100-200 V which is insufficient for fast charging.

Selecting voltage above 900 V which is uncommon for standard fast chargers.

DC fast charging typically operates in the voltage range of 450 to 900 volts to enable rapid charging of electric vehicles.

3fill in blank

hard

Fix the error in the code to correctly represent the power flow direction in DC fast charging topology.

Power Electronics

power_flow = "[1]"

Drag options to blanks, or click blank then click option'

ADC to DC

BDC to AC

CAC to DC

DAC to AC

Attempts:

3 left

💡 Hint

Common Mistakes

Selecting AC to DC which is typical for AC chargers, not DC fast chargers.

Choosing DC to AC which is incorrect for charging EV batteries.

In DC fast charging topology, power flows from DC source to DC load, so the correct direction is DC to DC.

4fill in blank

hard

Fill both blanks to complete the description of the two main stages in DC fast charging topology.

Power Electronics

stage1 = "[1]"; stage2 = "[2]"

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AAC-DC Rectification

BDC-DC Conversion

CAC-AC Conversion

DBattery Management

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing AC-AC conversion which is not part of DC fast charging.

Selecting Battery Management as a main power stage instead of control.

The two main stages are AC-DC rectification to convert AC grid power to DC, followed by DC-DC conversion to adjust voltage for battery charging.

5fill in blank

hard

Fill all three blanks to complete the dictionary representing key parameters of DC fast charging topology.

Power Electronics

dc_fast_charging = {"[1]": "450-900 V", "[2]": "50-350 kW", "[3]": "CCS, CHAdeMO"}

Drag options to blanks, or click blank then click option'

AVoltage Range

BPower Rating

CConnector Types

DCharging Time

Attempts:

3 left

💡 Hint

Common Mistakes

Using Charging Time as a key which is not a direct electrical parameter.

Mixing up Connector Types with Power Rating.

The dictionary keys represent Voltage Range, Power Rating, and Connector Types, which are essential parameters for DC fast charging topology.