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Photovoltaic (PV) is the generation of electricity using solar cells that convert sunlight energy into electrical energy. PV is also referred to as solar cells, modules, panels, or arrays, depending on the scale. Solar power is generated by using solar panels, which are made up of solar cells laid out in series or parallel.

Photovoltaic power can be generated on a small scale. The solar panels are attached to road signs and street lights in combination with batteries as a source of electricity for nighttime lighting. Photovoltaic power is also attracting attention as renewable energy. For example, eco-friendly houses combining solar panels and storage batteries are on the rise. In recent years, increasing mega-solar power plants have been built by installing many solar panels on vacant sites.

Photovoltaic Power Generation System generally consists of a "solar cell panel," "charge/discharge controller," "storage battery," "solar inverter," and "load."
The systems can be broadly classified into "Stand-alone (off-the-grid) PV systems" and "Grid-connected PV systems," and they have the following characteristics.

Off-the-grid PV System

It can be divided into systems for DC loads and AC loads.
Fig.1 shows the stand-alone PV system where all the circuits, including the loads, consist of DC.

Fig.1: DC stand-alone PV system
DC stand-alone PV system

When using a load that operates on AC power, such as home appliances, the solar inverter is used to convert the DC power generated by the solar cells into AC power, as shown in Fig.2 below.
As a disadvantage, however, it cannot be used as the battery runs out of remaining capacity.

Fig.2: AC stand-alone PV system
AC stand-alone PV system
Grid-connected PV system

The grid-connected PV system is a system where the power system is connected to a power company's grid. You can sell the generated power to the power company.

Fig.3: Grid-connected PV system for residential use
Grid-connected PV system for residential use

Here is an example of a PV system using household batteries to store electricity.
You can purchase the electricity shortfall. In Japan, it is called Home Energy Management System (HEMS).

Fig.4: PV / Battery system for residential use
PV / Battery system for residential use

The electricity produced by solar panels is direct current (DC). It needs to be converted to alternating current (AC) to be used in homes and factories. So we use solar inverters to convert the DC power to AC, as shown in the figure below.

Photovoltaic and Solar inverter

Developing solar inverters for PV, requires a DC power supply of about 300 to 600 V instead of solar cells. In such development and testing, a DC power supply called a solar array simulator or PV simulator is installed on the input side, and an AC electronic load is on the output side.

Matsusada Precision offers a broad range of high-voltage power supplies and regenerative power supplies (bidirectional power supplies) suited for developing and manufacturing solar inverters and batteries.

Abbreviations for photovoltaic:
MPPT: Maximum Power Point Tracking
PWM: Pulse Width Modulation
STH: solar-to-hydrogen efficiency

Related words:
  • Solar Cells
  • Batteries
  • Solar Power
  • Inverters
  • Storage
  • Batteries
  • Solar Panels
  • Mega Solar
  • Solar/Photovoltaic
  • Solar cell manufacturing equipment

Recommended products

High-voltage power supplies and regenerative power supplies (bi-directional power supplies) for the development and manufacturing of solar inverters and batteries

PBR series

PBR series

voltage range
80 to 1500 V
current
20 to 360 A
power
5, 10, 15kW
Regenerative DC power supply

Bidirectional power supply with power running and regeneration

R4K-36 series

R4K-36 series

voltage range
2 to 40 V
current
0.1 to 4 A
power
0.2 to 36 W
Palm size DC Power Supply

Excellent quietness with natural air-cooling system

R4K-80 series

R4K-80 series

voltage range
16 to 320 V
current
0.5 to 10 A
power
80 W
Ultra slim, 4-digit, DC Power Supply

Various lineups for output current control at 0.1 mA increment

TB series

TB series

voltage range
35 to 1000 V
current
1 to 108 A
power
360W, 720W, 1080W
Wide range programmable
DC power supply

"Turbo function" installed, Compact, Suppressing voltage/current overshoot

RE series

RE series

voltage range
10 to 650 V
current
1.2 to 1200 A
power
0.75 to 15 kW
147 models, programmable DC Power Supply

Low noise, High power, compact and high efficiency

REK/REKJ series

REK/REKJ series

voltage range
6 to 1500 V
current
1 to 1200 A
power
0.77 to 15 kW
Versatile, High-performance
DC power supply

Compact and High power, PFC circuit and universal input, Various operations is available

PRT series

PRT series

voltage range
80 to 1500 V
current
33 to 510 A
power
5 to 15 kW
High Power Wide Range DC Power Supply

Achieve a wide range of output, Variable internal resistance function

REH series

REH series

voltage range
0.75 to 1.2 kV
current
1.1 to 20 A
power
1.1 to 15 kW
Max 1.2 kV high voltage and high power
DC Power Supply

Safety design, Outstanding small size in its class of 1kV/15kW

CD series

CD series

voltage range
5 to 35 V
current
0.5 to 10 A
power
4 to 108 W
Battery cycle tester

Battery charge/discharge evaluation can be easily performed.

CDPU series

CDPU series

voltage range
5 to 60 V
current
20 to 250 A
power
200 to 1250 W
Battery cycle tester

1250Watt high power charge and discharge are realized

AMPS series

AMPS series

Voltage range
±0.6 to ±30 kV
Current
±0.02 to ±2 A
Power
0.4 to 1.2 kW
Ultra high-speed High-voltage Amplifier

Ultra high slew rate 1200 V/µs, High-speed response of frequency bandwidth 100 kHz

AMJ series

AMJ series

Voltage range
±0.5 to ±4 kV
Current
±10 to ±80 mA
Power
20 to 40 W
Compact and Fast Response
High voltage Amplifier

High speed response 75 kHz, DC bias function