Copyright 2021 Ampt LLC.
All rights reserved.
11
V600-12 String Optimizer Platform
Installation Manual: 57070013-1 H
Chapter 1: Product Overview
Ampt String Optimizers are DC/DC converters with multiple features that lower the cost and
improve the performance of new and existing PV systems and energy storage systems.
•
Dual MPPT per optimizer
- Ampt String Optimizers put maximum power point tracking on each of its
two input strings of PV modules. This mitigates or eliminates mismatch losses to deliver more energy
under changing environmental and system conditions over the lifetime of the power plant.
•
High Fixed-Voltage Bus (HFVB)
–
Am
pt’s advanced DC power management technology allows for
HFVB system designs which turn the variable voltage of the PV array into a fixed and predictable DC
bus voltage to achieve system-level economic advantages.
•
Ampt Mode
–
Inverters with Ampt Mode
operate in a fixed or narrow input voltage range that is
closer to the maximum system voltage. This allows the inverter to deliver a higher AC output voltage
at the same current which raises the rated output power of the inverter to lower the inverter's cost
per watt.
•
String Stretch®
–
Ampt’s patented String Stretch® technology puts voltage and current limits on the
output of each optimizer which doubles the number of modules per string and allows for smaller
conductor sizing per kilowatt delivered to save up to 50% on electrical BOS costs.
•
Direct-to-Converter
–
For DC-coupled energy storage systems, Ampt String Optimizers include Direct-
to-Converter technology which allows the DC bus to operate at a higher fixed voltage, so the
converter only needs to buck when charging and boost when discharging. This simplified operation
reduces battery converter costs by up to 50% with less circuitry and a higher power density.
•
High DC/AC
–
Ampt’s unique combination of output current limits and a higher DC bus voltage allows
PV system designers to achieve optimal DC/AC ratios (up to 3:1). With Ampt, system owners can
expand the DC power on existing systems without replacing inverters, combiners, or cables; optimize
inverter utilization on new systems to lower the cost per watt; and lower capex while increasing
storage durations on systems with DC-coupled energy storage.
•
V-match
–
Ampt’s patented V
-match
technology allows the output of our optimizers to match the
DC bus voltage set by the inverter or battery converter while delivering full available power from the
PV modules. This uniquely allows PV arrays with Ampt to automatically adapt to legacy or future
power equipment to repower existing systems, upgrade inverters, mix new and legacy PV modules,
deploy optimized DC-coupled storage systems, and other applications.
•
Full Tracker Fit
–
Ampt optimizers overcome string-voltage sizing constraints to fit more modules on a
tracker than systems without Ampt. Increasing the number of modules per tracker allows system
designers to fully use the tracker’s mechanical capacity and low
er tracker cost per watt.
•
Wireless Communication
–
Ampt String Optimizers incorporate optional wireless communication to
provide string-level data that is highly accurate, synchronous, and scalable to improve O&M, as well as
enhanced controls for storage applications.
For more information on Ampt’s product features and applications, visit
www.ampt.com.
