Democratic Republic of Congo Low Voltage Capacitor Design

Can a DC-BUS capacitor be used in a 75 kW traction motor drive inverter?

Conventional inverter design sizing dc-bus capacitor based on voltage ripple is no-longer effective. In order to handle high current in high temperature environment, a lowinductance high-current film capacitor is proposed to replace the conventional electrolytic bulk capacitors for a 75-kW traction motor drive inverter.

How does geometry affect finished capacitor functions?

To understand the effects of geometry on finished capacitor functions it is first important to understand the section geometry (basic winding unencapsulated). In general, the shorter the section is the better it will function. The ideal capacitor would generally have the apparent diameter to length ratio of a hockey puck.

Can electrolytic capacitor be used as a bus link capacitor?

For years design engineers have chosen electrolytic capacitor technology for use as the bus link capacitor on inverter designs. The main attraction has always been the low cost per farad associated with electrolytic capacitors.

Can metallized polypropylene capacitors fail?

There are some concerns that in certain applications metallized polypropylene capacitors can fail in a manner such that the failure poses a hazard to the equipment and personnel. FuseacTM is a thermal fuse technology designed to protect against common capacitor failure modes in high power AC and DC applications.

What are metallized film capacitors utilizing polypropylene dielectric?

Metallized film capacitors utilizing polypropylene dielectric have become the component of choice in critical applications because of their low dielectric loss and superior breakdown voltage strength.