The error measuring the difference between the IA output common-mode voltage
, applied to [M.sub.10a] and [M.sub.10b], and the reference common-mode voltage
([V.sub.CM]) applied to [M.sub.10c] and [M.sub.10d], is amplified in order to drive the gates of the bias transistors [M.sub.7].
However, the topology that uses series connected cells inverters presents some advantages, as smaller voltage rate (dU/dt) due to existence of higher number levels, producing less common-mode voltage
across motor windings .
"When combined with an oscilloscope equipped with the TekVPI interface, it is the first, and only, measurement system capable of accurately resolving high-bandwidth, differential signals, in the presence of large common-mode voltage
with complete galvanic isolation," he said.
The common-mode voltage
(CMV) of the permanent magnet synchronous motor (PMSM) drive system with two-level three-phase voltage source inverter (VSI), as shown in Figure 1, can be approximately calculated according to the voltage between the midpoint of the dc-link capacitor and the neutral point of the three-phase load .
Wu, "Common-mode voltage
mitigation for back-to-back current-source converter with optimal space-vector modulation," IEEE Transactions on Power Electronics, vol.
and hence to ensure high rejection of common-mode voltage
at the output, the voltage tracking errors evj must be of such values to maintain [[beta].sub.1] [approximately equal to] [beta].sub.2].
Xu, "Suppression of common-mode voltage
for matrix converter based on SVPWM," Electric Machines and Control, vol.
The NBA3N200S and NBA3N201S both support signaling rates of up to 200 megabits per second (Mbps) and have a common-mode voltage
range -1 V to 3.4 V.
Optimal Common-Mode Voltage
Reduction PWM Technique for Inverter Control with Consideration of the Dead-Time Effects--Part I: Basic Development, IEEE Transactions on Industry Applications, 40(6): 1605-1612.
Kazerani, "Common-mode voltage
reduction methods for current-source converters in medium-voltage drives," IEEE Transactions on Power Electronics, vol.