Solar Storage Solutions
In today’s environmentally conscious world, Solar Storage is an increasingly popular system that captures energy and stores it to perform operations in the future. These Systems involve converting many forms of energy, such as electrical potential energy or kinetic energy, into more economically storable formats for short-term and long-term use.
Panasonic product solutions include Relays, Passive Components, such as Capacitors, Metal Oxide Varistors, and more.
Solar Inverter Systems are also used to convert the direct current (DC) of a photovoltaic (PV) solar panel into an alternating current (AC) which then are fed into commercial or residential electrical grids. Solar Inverters have a particular function known as Maximum Power Point Tracking (MPPT) to retrieve the maximum possible power from the PV array. In addition, Panasonic provides Power Inductors, Capacitors, Connectors, ESD Suppressors, and Resistors to maximize the performance of the Solar Inverter System.
Block Diagrams
Energy Storage Block Diagram
Energy Storage
- VIN: Film Capacitors and Metal Oxide Varistors
- AC/DC and DC/AC: Power Choke Coils, Film Capacitors, and Polymer Capacitors
- MCU: Fuse, Chip Resistor, Relays, and Ni-MH Batteries
- Battery: Chip Resistors and Fuse
- VOUT1: Metal Oxide Varistors
- Inverter MCU: Relays and Fuse
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Solar Inverter Block Diagram
Solar Inverter
- DC/DC Power Stage Unit: Relays, Capacitors, and Power Choke Coils
- Semiconductor Power Device: GraphiteTIM
- AC Source: MOV Surge Protection
- Storage Battery Unit: Resistor, Chip Resistor, Fuse, Relays, and Ni-MH Batteries
- I/O Interface Unit: Bluetooth® Wireless Module
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Additional Solar Inverter Applications And Related Products
Solar Panel
Control
Touch Panel
Related Products
Communication
Related Products
DC/DC Power Stage
Related Products
DC/AC Power Stage
Storage Battery
Related Products
Power Supply
Related Products
Featured Passive Components for Solar Storage
SXV Series
The SXV Series of OS-CON™ Capacitors are halogen-free radial lead type Capacitors with 100.VDC maximum voltage. Offering large capacitance values and extremely low ESR at high voltage (up to 100 V.DC), suitable for DC/DC Power Stage.
ECQ-UA Series
The ECQ-UA Series Metallized Polypropylene Film Capacitors benefit from an original in-house patterned metallization process with a fuse mechanism function. This unique technology delivers stable capacitance levels over the product lifetime, suitable for AC Filter for Output Stage.
EZP-V Series
The EZP-V Series Metallized Polypropylene Plastic Film Capacitors parts offer 600, 800, and 1100 V.DC options in small package sizes. These parts are suitable for DC Filter for Input Stage and DC Link for Rectifier and Inverter.
ERZ-E Series
The ERZ-E1xAxxxSx Series Radial Leaded Disc ZNR® (Zinc Oxide Non-Linear Resistor) Transient / Surge Absorbers features outstanding performance, small diameter size, and a broad operating temperature range of -40°C to +125°C. These parts are suitable for Power Conditioner and Junction Box.
Featured Relays For Solar Storage
HE-S SERIES RELAYS
The HE-S Series is a compact Power Relay with low operating power and high-capacity switching. This Relay features contacts with long electrical life and a high-capacity resistive switching load rating of 35A at 277VAC for 50,000 cycles. This Relay also features a mirror contact structure (compliant with EN60947-4-1) which uses a 2 Form A coupled with a 1 Form B contact arrangement. The HE-S Series Relays are suitable for Solar related applications where safety cut-off to 10kW or less solar inverter (AC side) is required.
HE SERIES RELAYS PV TYPE
Panasonic's HE Series Relays PV Type is available in three different contact ratings: 35A, 48A, or 90A. These Relays have a 1 Form A (SPST-NO) contact arrangement in a PC Board mountable small case size. The HE Series Relays feature the minimum contact gap and 2.5kW surge breakdown required by photovoltaic standard requirements. The HE Series Relays are suitable for Solar related applications where safety cut-off to 30-50kW solar inverter (AC side) is required.
HE-N Series Relays
Panasonic's HE-N Series General Power Relays feature high switching capacity of 120A @ 480VAC or 55A @ 800VAC in a 1 Form A (SPST-NO) contact arrangement. Offering a compact size of 50mm x 40mm x 43mm, HE-N Relays can be mounted on a PC Board without screw terminals for easier design and faster board assembly. The HE-N Series Relays are suitable for Solar related applications where safety cut-off to 100kW solar inverter (AC side) is required.
HE-V Series Relays
The HE-V Series is a High Capacity Power Relay with up to 1000VDC, 20A cut-off capability. With reduced coil holding voltage, these DC Relays offer significant energy savings. The smaller profile of the environmentally resistant HE-V Relay provides savings in PCB space. The HE-V Series also feature 2 Form A contact arrangement and sealed construction. The HE Series Relays are suitable for Solar related applications where safety cut-off to solar inverter (DC side) / Rapid Shutdown is required.
AQV258H5 SERIES HE 1 FORM A TYPE PHOTOMOS® RELAYS
Panasonic's AQV258H5 Series HE 1 Form A Type PhotoMOS® Relays in a DIP6 Package offers a 1500V high voltage capability with switching reliability and application safety in Battery Monitoring Systems (BMS). The AQV258H5 Series are suitable for Solar applications where battery insulation solutions are required for leakage detection.
GE 2 FORM A SERIES PHOTOMOS® RELAYS
The GE 2 Form A Series PhotoMOS® Relays apply to 2 Form A use and two independent 1 Form A use, ranging from Output rating of 60V 500mA to 600V 40mA, with an I/O isolation voltage of 5000Vrms (reinforced). These are available in 8 pin DIP through-hole or surface mount. The GE 2 Form A Series Relays are suitable for Solar related Battery Cell Group Monitoring Systems.
Optimum Relay Configuration for Solar Inverters
AC Side Only
HE Series Relays PV Type provide the necessary high switching capacity and low power consumption required by energy management applications. They also feature the minimum contact gap and 2.5kW surge breakdown required by photovoltaic standard requirements.
HE-S Series compact Power Relays feature contacts with long electrical life and a high-capacity resistive switching load rating of 35A at 277VAC for 50,000 cycles. These Relays are RoHS/Reach compliant as well as compliant with VDE126 and EN61810-1 Standards.
LF-G Series Relays provide excellent creepage, clearance and breakdown voltage. Offered with a 1.8mm contact gap, these Relays can handle switching capacities up to 33A 250VAC.
The HE-S Series is a compact Power Relay with low operating power and high-capacity switching. This Relay features contacts with long electrical life and a high-capacity resistive switching load rating of 35A at 277VAC for 50,000 cycles.
DC Side Only
HE-V (2a, 20A 1,000V DC*)
The high-voltage, high-capacity HE-V Series Relays are capable of simultaneously cutting off the positive (+) and negative (-) terminal by serially connecting the 1 Form A contact up to 1,000V DC cutoff. They feature a compact size and contribute to energy savings due to reduced coil holding voltage.
*1,000V DC is the maximum allowable voltage when each 1 Form A contact is connected in series. The rating is 800V DC.
AQZ PhotosMOS (1a 10A 60V DC)
AQZ PhotoMOS Relays have high-capacity up to 6A in a slim 4-pin package. Capable of frequent switching and improving system reliability, AQZ PhotoMOS Relays have AC/DC dual use with low on-resistance and high sensitivity. As well, they contain low-level off state leakage current of max. 10 μA.
EP (1a 10A~300A 1,000V DC*)
EP Series high-voltage, compact DC Contactors offer a high capacity of a maximum of 1,000 Volt DC cutoff. With capsule contact construction, these DC Contactors are compact and generate little operating sound, even when large currents are cut off.
*1,000V DC is the maximum allowable voltage. The rating is 400V DC.
Solar Inverter Block Diagram - Film Capacitor Solutions
Film Capacitors for Input Filter
Suggested Series: EZP-E Series / EZP-V Series
Voltage: 450VDC to 1100VDC
Capacitance: 1µF to 110µF
Other Features:
- Built-In Fuse Function
- AEC-Q200 Compliant
- 85℃,85% 1000h
- Temperature: -40℃ to 105℃
Film Capacitors for Input Filter
Suggested Series: ECW-F(D) Series / ECW-F(E) Series
Voltage: 450VDC to 630VDC
Capacitance: 0.01µF to 4.7µF
Other Features:
- Built-In Fuse Function
- 85℃,85% 1000h
- Temperature -40℃ to 105℃
Y2-Rated Capacitor Solution
Suggested Series: ECQ-UB Series
Voltage: 300VAC
Capacitance: 1nF to 6.8nF
Other Features:
- Built-In Fuse Function
- 85℃,85% 500h
- Temperature -40℃ to 110℃
Film Capacitors for Snubber
Suggested Series: ECW-F(D) Series / ECW-F(E) Series
Voltage: 450VDC to 630VDC
Capacitance: 0.01µF to 4.7µF
Other Features:
- Built-In Fuse Function
- 85℃,85% 1000h
- Temperature -40℃ to 105℃
Film Capacitors for DC Link
Suggested Series: EZP-E Series / EZP-V Series
Voltage: 450VDC to 1100VDC
Capacitance: 1µF to 110µF
Other Features:
- Built-In Fuse Function
- AEC-Q200 Compliant
- 85℃,85% 1000h
- Temperature: -40℃ to 105℃
Film Capacitors for Output Filter
Suggested Series: EZP-Q Series
Voltage: 250VAC to 600VAC
Capacitance: 1µF to 36µF
Other Features:
- Built-In Fuse Function
- 85℃,85% 1000h
- Temperature: -40℃ to 105℃
X2-Rated Capacitor Solution
Suggested Series: ECQ-UA Series
Voltage: 275VAC
Capacitance: 0.0082µF to 10µF
Other Features:
- Built-In Fuse Function
- AEC-Q200 Compliant
- 85℃,85% 1000h
- Temperature: -40℃ to 85℃