Converting DC to AC: Basic Principles of Inverters

This article investigates the basic principles of inverters, different types of DC-to-AC conversion, and common applications for generating AC voltage in manufacturing. With greater electronic prevalence, increasing renewable energy sources, and industrial automation processes, inverters have become ubiquitous electrical equipment for supplying AC power from a DC source. What is an Inverter? Most power supply … Read more

How Pulse Width Modulation is Used in Variable Frequency Drives

In this article, learn how variable frequency drives make use of the principle of pulse width modulation to create analog-type signals from a digital source, such as with motor drives. Pulse Width Modulation, or PWM, is a commonly used strategy for creating analog types of signals from a digital source. This is a common method … Read more

The Link Between VFD Skip Frequency Parameters and Harmonics

Variable frequency drives (VFDs) can output simulated waveforms of nearly any frequency. However, in order to be truly useful, harmonics and resonance in the system must be avoided and frequency parameters should be put in place. Variable frequency drives (VFDs) are one of the most common methods of driving three-phase motors. The output is a … Read more

Controlling VFDs with Manual Inputs

To increase the flexibility of a motor control system, a variable frequency drive (VFD) is a common device that solves many motor control problems. In this article, learn how to control manual input of VFDs. Variable frequency drives solve many of the challenges associated with driving three-phase motors including adjustable speeds, networking many motors together … Read more