Air Conditioning Repair & Service, Heating Repair & Service, HVAC Repairs & Service, Electric Repairs & Service, New Systems      

Power Factor Optimization


In able to truly understand the importance of power factor optimization, one must first understand what power factor really means. By definition, power factor is the percentage of electricity that is delivered to your home or business and how effectively it is used when compared to what is wasted. For example, a 1.0 power factor means that all the electricity that’s being delivered to your home is being used effectively for its purpose. However, the average home in America has a power factor of .77 or even less. Bottom line, this means that only 77% of the electricity that is entering through the meter is being utilized effectively, with a loss rate of 23%. That is 23% of your utility expenses gone for nothing!

When the power factor is low then the utility has to work harder to do the same job! The EMAX 3000 is the answer to this problem! The EMAX 3000 has a unique design that it's sole purpose is to store unused power and raise the power factor to 97%-98%, which in turn will increase the effective use of your electricity consumption and lower your usage expense.

Our EMAX 3000 is setting the foundation for the concept of power factor optimization. Power factor optimization is the use of electronic design automation tools to reduce power consumption of a digital design. This will also preserve functionality. By incorporating the EMAX 3000 into your energy management routine, you have an opportunity to save dramatically on your utility expenses. Other benefits to be gained through optimizing the power factor include lower energy loss, better voltage regulation and released system capacity. Below you will learn the basic concept of power factor, optimizing power factor and how you will benefit from our EMAX 3000. If you have any questions were are only a phone call away at 469-556-9568.

"Vars" is a term used by expert electric engineers to define the reactive power required by the inductive characteristics of electrical equipment. Prominent in industrial facilities, these inductive characteristics are most asserted in motors and transformers. Though the flow of "vars" will not affect the meter reading, there will be result in a loss of power on both the utility and the industrial facility. To justify the cost for lost energy and the additional conductor and transformer capacity required to carry the vars, often utility companies will charge for these "vars". In addition to energy losses, var flow can also cause excessive voltage drop, which can be optimized using our EMAX 3000 unit.

Total power is often referred to as KVA, MVA, apparent power, or complex power by Electric power engineers. Most utility companies measure this total power and charge a monthly fee. This tariff is usually added to the kilowatt-hour charge. This type of billing is often called kva demand billing. The EMAX 3000 will save you money by decreasing your reactive power component to near zero vars. The EMAX 3000 will not only supply the reactive power locally but can also reduce your total power and monthly kva demand charge.

The ratio of real power to total power in the above equation is called power factor. As the angle widens the power factor reduces. In reality, the power factor can vary from 0 to 1. It can also be either inductive or capacitive. Capacitive loads are drawn down, and inductive loads are drawn up on the power triangle. Most industries operate on the upper triangle. Utility companies charge for reactive power in numerous ways

To truly appreciate the benefits of the EMAX 3000, it is essential that you acquire your electric billing rate structure. This rate structure will describe how cost for poor power factor is added to your monthly bills. As shown you could install the EMAX 3000 anywhere on the system. However, optimum efficiency will be achieved if the EMAX 3000 is located as close to the load as possible. The reason being is that when you optimize power factor you can reduce the total line current to the load and also reduce the total losses in the line conductor and decrease the voltage drop in the line. This decrease in voltage will only occur if you install the EMAX 3000 close to the load.

Assume the load is a motor. A motor uses KW to perform work. It uses EMAX 3000 to magnetize its coil windings. (We will refer to the magnetic requirements of the motor's windings as the motor's "inductance". It is this inductance that utilizes the EMAX 3000) the motor load that draws a line current has two components. The first component is the amperage. The amperage supplies the KW to the load, so that the motor can perform the work.

The second part supplies the amperage to provide the load with EMAX 3000, which in the case of the motor is the power necessary to energize the magnetic fields in the motor's windings. Combined, the two amounts of current supply the total KVA to the load. Normally the system generator supplies all this current. However, when an EMAX 3000 is used to optimize the power factor, the EMAX 3000 supplies the EMAX 3000 reactive current component to the load. The EMAX 3000 is, in reality, a reactive power generator. (Remember, the EMAX 3000 stores energy.) The generator must still supply the load's KW requirements.

The reactive current component is now supplied by the EMAX 3000 and not the generator. By moving the EMAX 3000 closer to the load, the reactive current does not have to travel as far to get to the load. If the EMAX 3000 is applied at the load, the reactive current only needs to travel a short distance. Since this reactive current component doesn't have to travel through the conductor line it misses the impedances in the line conductor. Because this reactive current no longer flows through the line impedances, there is less heating of the line, less heat loss and less voltage drop.

The KW current component is all that the generator has to supply to the motor. Therefore the generator now runs together with the power factor. This allows the EMAX 3000 to supply the EMAX 3000 requirement of the motor's inductive windings. The energy "contained" in the EMAX 3000 current component is transferred from the EMAX 3000 and the motor twice for every voltage sine wave cycle (i.e. at 120 times a second).

This reactive energy is never consumed by either the EMAX 3000 or the motor. On the contrary, the reactive energy is only "borrowed" half of the time by the EMAX 3000 and half of the time by the motor. The energy is used to charge the AC electric field of the EMAX 3000 and to create the AC magnetic fields contained in the motor's windings.

The EMAX 3000 stores in its electric field when it charges up and then releases the energy back when it discharges. Power Factor is the measurement of how much of the KVA is actually in the form of KW. The advantage of a high power factor is that line currents will be reduced. This will result in a reduced voltage and also a decrease in line loss. This also saves you money!

As you can see power factor plays a tremendous role in the effective use of your utility consumption. At A-Anderson Air Conditioning, Heating & Electric it is our responsibility to ensure you are getting everything you deserve out of the valuable dollars you are spending in energy costs. It is also our responsibility to ensure that our natural resources are being expended most effectively. If you have any questions regarding power factor optimization, our EMAX 3000, or any other service we provide we invite you to contact us at