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Pulse width modulation, or PWM, is the method used in the inverter part of the VFD to convert the DC voltage to the variable voltage variable frequency (VVVF) AC voltage.
The AC output voltage and frequency are generated by pulse width modulation using transistors that turn the DC voltage on and off in a predetermined order. Current VFDs use IGBTs, also known as insulated gate bipolar transistors.
The transistors function as a switch to link the motor’s windings to the DC bus. The DC bus of a VFD with a 480VAC input will be roughly 678VDC. Thus, the term “pulse” refers to the transistors turning on and off, which causes a voltage pulse with an amplitude of around 678VDC.
The Global PWM drive market accounted for $XX Billion in 2021 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2022 to 2030.
Two 10V sin wave current commutation commands are launched by ACS Motion Control’s pulse width modulation single/dual servo drive.The new NPApm Series two axis NanoPWM servo drive module is compatible with commands for 10V current commutation.
With regard to move and settle times, standstill jitter, and velocity smoothness, the NPApm Series, a member of the servo drive family, can work with any motion controller to handle even the most demanding motion applications.
The NPApm Series has already been employed in a number of applications, including wafer metrology and inspection, FPD inspection, and ultra-precision machining for the production of optical components, all with remarkable success. In order to outperform linear drives in terms of stand-still jitter and tracking inaccuracy, the NPApm combines the ACS and a brand-new, unique technology.
NPApm offers all the advantages of a PWM type drive at a lower total cost of ownership, including much less heat dissipation, improved reliability, simpler supply needs, smaller size, and simpler configuration.
