IEEE Electrification Magazine - September 2014 - 46

400

4,000

Train Moving Direction

350

Speed (km/h)

300

3,000

250
Energy
Consumption

200

2,000

150
100

1,000

50
0

Beijing South Yizhuang
0

10

20

30

Yongle
40

Wuqing

50
60
70
Distance (km)

80

Energy Consumption/Generation (kwh)

Speed

Regenerative
Energy

90

100

Tianjin
0
110
120

Figure 14. The energy consumption of a CRH3 train between the Beijing South and Tianjin train stations.

243 kWh. The regenerative energy, fed back to the overhead
wire, is consumed by other trains. If there are no other
trains available, the regenerative energy is often consumed by braking resistors to keep the overhead wire
voltage at its permissible range. We propose a battery car
storage scheme to avoid the excessive use of regenerative
energy by braking resistors.
Figure 16 shows the proposed regenerative energy storage scheme installed on high-speed trains. When batteries
are fully charged, the battery container cars are unloaded
and replaced by other battery containers. Figure 17 shows
the topological structure of a regenerative energy storage

Figure 15. The Beijing South Railway Station.

46

I E E E E l e c t r i f i c ati o n M agaz ine / september 2014

scheme, and Figure 18 shows the circuit for a battery charger. For the CRH3 high-speed trains, the batteries are
3 m # 1.5 m # 0.7 m, 60-kW, 320-Ah nickel-cadmium and
weigh 770 kg. The dining and first-class cars of CRH3,
which are among the lighter cars at about 13 tons, can
often house the battery containers.

Proposed Control Strategy of Battery Chargers
In Figure 18, there are two half-bridge and one full-bridge
dc/dc converters with isolation transformers. Thus, the
current control strategy shown in Figure 19 is used in
which the voltage outer loop samples the output voltage



Table of Contents for the Digital Edition of IEEE Electrification Magazine - September 2014

IEEE Electrification Magazine - September 2014 - Cover1
IEEE Electrification Magazine - September 2014 - Cover2
IEEE Electrification Magazine - September 2014 - 1
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IEEE Electrification Magazine - September 2014 - Cover3
IEEE Electrification Magazine - September 2014 - Cover4
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https://www.nxtbook.com/nxtbooks/pes/electrification_september2017
https://www.nxtbook.com/nxtbooks/pes/electrification_march2018
https://www.nxtbook.com/nxtbooks/pes/electrification_june2017
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