Page 22 - IJOCTA-15-4

M. A. Aman et al. / IJOCTA, Vol.15, No.4, pp.549-577 (2025)
No. of No. of diodes
Type of switches and Advantages Disadvantages
Topology per capacitors
phase per phase
• Low power density
• Fewer power switches and high torque
and fast demagnetization ripple
• Compact design • High stress one
• Better magnetic the switching elements
utilization and low efficiency
• Improved control
Bifilar (Figure 22A) 1 1 • Complex in snubber
and lower electromagnetic circuits
interference • Greater space
• Improved system requirement for
reliability windings
• Cost-effective for • Increased manufacturing
high power
complexity
Auxiliary commutation
• Increased complexity
• Additional components
and manufacturing complexity
raise production costs
• Reduced torque
• Requires more physical
ripple
space for the auxiliary
• Improved efficiency
windings, which may
• Enhanced motor
challenge compact designs
4, 1 shared performance
• Need more sophisticated
capacitor for • Lower voltage stress
winding (Figure 22B) 4 control algorithms for managing
the entire system, • Better fault handling
auxiliary windings effectively
not per phase • Regenerative braking
• Higher maintenance
support can be adapted
• Energy loss in
for various power and
auxiliary windings
performance levels in
• Integration issues
EV applications
• Adds extra weight
due to additional
windings
• Scalability limitations
• Fewer power
switches
• Four modes of operation
• Reduce fault • Complex control
tolerance and increase • High losses in
high efficiency the energy
• Reduced electromagnetic recovery circuit
Sood (Figure 23A) 1 1, 1 interference • Higher voltage
• Improved torque stress
control and compact • Limited scalability
design • Higher initial
• Enhanced thermal cost
management
• Regenerative
braking support

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