Electrostatic Analysis for Electric Field and Voltage Simulation

Electrostatic Analysis in EMWORKS 

Electrostatic analysis in EMWorks is an electrostatic simulation tool that predicts electric fields, capacitance, and breakdown risk directly on 3D CAD models. Use it to validate high-voltage insulators and bushings, PCB/ESD protection, connectors, and power electronics designs before hardware testing.

• Simulate electric potential, field strength, and charge distribution

• Evaluate insulation strength, voltage breakdown, and ESD issues

Key Features of EMWORKS Electrostatic Analysis 

• Breakdown and field stress: Electric-field distribution, peak |E|, creepage and clearance checks in insulators, bushings, connectors, and air gaps.

• 3D CAD-based simulation: Electrostatic analysis on full 3D CAD parts and assemblies without intermediate geometry export/import.

• Field, potential, charge, capacitance: Electric potential, electric-field strength, charge distribution, self and mutual capacitances.

• Electrostatic forces: Forces and pressures on conductors and insulating parts under specified voltages.

• Parametric studies: Geometry, material, and voltage sweeps with outputs such as max |E|, capacitances, and forces versus design parameters.

• 3D vs 2D / axis-symmetric: 3D electrostatic problems in this module; planar and axis-symmetric electrostatics handled by EMWorks2D.

Applications of Electrostatic Field Simulation

Typical use cases:

• Dielectric breakdown in insulators and bushings – field distribution, creepage and clearance checks.

• Corona in high-voltage equipment – field enhancement around conductors in lines, bushings, capacitors, power electronics.

• ESD in PCB and electronics – fields around boards, connectors, enclosures, discharge paths.

• Connectors, cables, terminations – local field stress, partial discharge risk.

• Capacitance and capacitance matrices – self and mutual C for busbars, high-speed interconnects, capacitors.

• High-voltage testing and insulation coordination – field plots and numerical safety margins.

Industries That Rely on Electrostatic Analysis 

Typical use of EMWorks electrostatic analysis:

• High-voltage equipment and transmission – insulators, bushings, air gaps.

• Transformers and switchgear – field distribution, insulation coordination, corona checks.

• Power electronics – DC links, filters, busbars, clearances and creepage.

• Cables and connectors – stress at shields, terminations, joints.

• PCB and electronics (ESD) – fields around boards, enclosures, connectors, ESD paths.

• Labs and universities – insulation, breakdown, and electrostatic field studies.

Calculate the electric field stress, capacitance, and related quantities

The Electrostatic module computes, for each study:

• Electrostatic potential & Electric field

• Electric field stress & Voltage breakdown indicators

• Electric flux density

• Capacitance and capacitance matrix

• Force and torque

• Stored electrostatic energy