Deck 9: Inverters, Controllers, and Applications

Question 1

Most sine wave inverters use harmonics to generate the sine wave output.

Answer 1

False

Question 2

__________________ is an efficient method for controlling charging current with significantly less power loss than using a linear regulator or an on-off switched regulator.

Answer 2

PWM
Pulse Width Modulation

Question 3

An I-V curve represents all possible voltage and current operating points for a specific set of conditions.

Answer 3

True

Question 4

What are harmonics?

Question 5

The ____________ changes DC power to AC power and interfaces with the grid.

Question 6

Shunt controllers regulate charge current by diverting current away from the ___________ by shorting the charging source output.

Question 7

Explain the inverter application utility-interactive with no batteries.

Question 8

______________ is calculated as the ratio of power-out to power-in.

Question 9

The output DC voltage and current of a PV array are continuously ___________ due to changes in solar intensity, ambient temperature, and array temperature.

Question 10

A buck converter takes a high voltage and "bucks" it down to a lower voltage.

Question 11

The stand-alone off-grid inverter application involves the energy source supplying a charge controller and batteries supplying DC to the inverter.

Question 12

Explain what the I-V curve represents.

Question 13

What is a charge controller?

Question 14

What is an inverter used for?

Question 15

Maximum power is transferred from the source to the load when the load inductance is equal to the internal source inductance.