Effect of Unbalanced Voltage on Induction Motor
The effect of unbalanced voltage on induction motor includes increased current, reduced torque, overheating, and efficiency loss. Learn the causes and fixes. How Voltage Affects
Electrical
Dynamic Braking in Variable Frequency Drives(VFD)
Dynamic Braking in VFD is a technique used to safely stop high-inertia loads by dissipating excess energy through braking resistors. Variable Frequency Drives (VFDs) are
Current Transformer Secondary Grounding
Current transformer (CT) secondary grounding is essential for safety, relay accuracy, and avoiding equipment damage. This article explains why CT secondary is grounded, how CT
Harmonic Filter Selection: Passive, Active & Hybrid Filtering
Harmonic filter selection is essential because all orders of harmonics harm an electrical power system, with the 5th and 7th harmonics being especially damaging to
Transformer Magnetizing Inrush Current
When energizing a power transformer, the transformer draws a magnetizing current. The magnitude of the magnetizing current is several times higher than the rated current
IR Compensation in DC Drive
IR compensation is an essential feature in DC drives and VFD to ensure speed regulation, especially when tachometer feedback is unavailable. The following sections explain
What is difference between AC and DC Resistance of a conductor?
AC resistance is higher than DC resistance due to skin and proximity effects. While DC current uses the full conductor cross-section, AC current flows near
Harmonics Mitigation Techniques
This guide explains effective harmonics mitigation techniques—including equipment selection, tuned and de-tuned filters, and active filters—to reduce distortion, improve reliability, and ensure compliance with power
Why LV Winding Is Placed Next To The Core?
In a transformer, the LV (Low Voltage) and HV (High Voltage) windings are arranged strategically for performance and safety. One common design is to place
What is Voltage Unbalance and How to Calculate It?
Voltage unbalance (also called voltage imbalance) refers to the condition in a three-phase system when the voltages across the phases are not equal in magnitude