VFD output side peripherals for motor protection

An electrical panel is a metal box with main circuit breaker in the electrical panel that regulates the electricity to the entire distribution feeders across the network . These feeders with circuit breakers are designed to automatically shut off when there is too much electrical current flowing through them. Offering advanced protection, fault protection and seamless integration with energy management and control systems improves the performance of Electrical Panel . Electrical panel clearance is important for energy efficiency because it allows your panel to operate at its optimal temperature and avoid overheating , thus proper clearance inside the panel is important for fire prevention because it reduces the risk of ignition and spread of flames. This measure helps in improving life span of the panel.

Areas of concern at Motor drive output

Excessive dv/dt , Peak and overvoltage , Parasitic earth currents , Eddy current losses in the motor , Bearing currents , Acoustic motor noise

Solutions

dv/dt reactors (increase inductivity, signal smoothing)

dv/dt filters (low inductance & Capacitance, facilitates

In controlling the voltage peaks to sustainable level)

Sinusoidal output filters (High L and C for optimizing the output signal by converting it to Sine Wave)

Good and Valuable Reasons by using output Filters

Protect the motor against voltage peaks hence prolongs the lifetime Reduces the losses in the motor

- Lower copper and iron losses, -Less heat inside the motor

Eliminates acoustic switching noise from the motor

Reduces semiconductor losses in the drive with long motor cable

Possible longer motor cable with proper Voltage Regulation