Parallel Phase Balancer (PPB)
Three-phase power is used widely for energy generation, transmission, and distribution. It is more economical and efficient than other power systems but can suffer from a number of issues when unbalanced.
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1U
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8 kW rated capacity
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3 ph in/3 ph out
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> 98% efficient
Specifications
The PPB’s typical applications have “finite” power sources and are typically “off-grid” full- or part-time. The PPB is, however, scalable and adaptable to applications, such as:
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ships and submarines (present application)
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expeditionary units
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forward bases
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micro-grids
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systems powered by mobile generators
Applications
Manual
UPS
PBB
Very Good
Realized Static Line Unbalance
> 5%
< 3%
< 3%
Dynamic Unbalance Response
None
Excellent
Power Efficiency
100%
~ 80 - 85%
> 98%
Impact to Size & Weight
N/A
Large
Small
Impact to Reliability and Availability
N/A
Large
Small
The Results
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1U
-
8 kW rated capacity
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3 Ph in/3 ph out
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>98% efficient
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Load unbalance correction:
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>20% @ 4 kW load
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>12% @ 8 kW load
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Pricing
Balancer On
2.14% Unbalance
Balancer Off
22.34% Unbalance
We look forward to discussing your needs.
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Traditionally, load balancing is static with varied success. Loads are manually assigned to phases, leaving no way to adjust for load dynamics and making it difficult to achieve an accurate balance.
Negative impacts of unbalance include:
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Energy loss within generation and transmission
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Limited available capacity for most heavily loaded phase
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Increased heat from generators and motors
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Vibration and mechanical stress on generators
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Potential drop out of switching gear (self-protect)
The classic solution is an uninterruptible power supply (UPS), which provides excellent static and dynamic balancing but decreases efficiency, has negative impacts to reliability and availability, and adds significant size and weight.
The Problem
The Parallel Phase Balancer pulls extra current from lightly loaded line phases and injects it onto more heavily loaded load phases. Only the unbalanced portion of the load is processed; most load power flows through standard wiring.
The PPB is connected in parallel with the power line and yields high efficiency, reliability, and fault tolerance in a small and light-weight package.
The Solution
