Product Introduction

WPZ IGBT Static Automatic Voltage Stabilizer (intelligent frequency-stabilized voltage-stabilized power supply) is a new generation of AC voltage-stabilized power supply product developed by our company. The product is based on advanced power electronics technology, applies 2-level topology, uses IGBT (Infineon) as the main power device, SPWM working mode voltage and current dual closed-loop controllable voltage stabilization, PID fuzzy control, to ensure stable output of voltage and frequency. This power supply is mainly used in harsh power consumption environments, for distributed power supply (small hydropower, remote power supply, grid flicker) with large impedance, large voltage drop, frequent voltage fluctuations, unstable frequency, serious waveform distortion, THD exceeding the standard, and cannot meet the stable operation of the load. This power supply can eliminate all interference and harmonic distortion in the power grid, and ensure that the output voltage meets GB/T-12325 “Power Quality Power Supply Voltage Deviation” to ensure stable operation. WPZ intelligent frequency-stabilized voltage-stabilized power supply has stable voltage, stable frequency, high precision, fast response, good impact resistance, and is suitable for all loads (inductive, capacitive, resistive, impact load).

Working principle

WPZ series IGBT Static Automatic Voltage Stabilizer is designed based on the working principle of AC-DC-AC inverter loop. The first stage AC-DC conversion adopts three-phase full-bridge rectification mode to convert the input AC voltage into DC voltage; the second stage DC-AC inverter consists of high-power insulated gate bipolar transistor (IGBT), imported Mitsubishi IGBT drive unit and high-voltage non-inductive capacitor protection circuit. Based on the advanced and mature 2-level full-bridge inverter circuit, the control adopts advanced sinusoidal pulse width modulation (SPWM) and space vector pulse width modulation (SVPWM) technology to convert the DC bus voltage into an AC voltage source with arbitrary frequency and voltage adjustment through inverter technology. In order to purify the power grid and reduce the impact of the IGBT Static Automatic Voltage Stabilizer rectifier on the power grid, the rectifier of the IGBT Static Automatic Voltage Stabilizer can be upgraded from the traditional 6-pulse to 12-pulse and 18-pulse rectification, which effectively reduces the impact of the power grid. Active rectifier and filter unit can also be used.

Control Principle Diagram

Control principle topology diagram

List Of  WPZ Technical Parameters

List of  WPZ Power Models & Products

1.Three-phase Model List

Notice:

1. For 90kVA and below, use high and low voltage switch. For 90kVA and above, choose one of the high and low voltage when ordering;

2. The current in the table is calculated when the line voltage is 380V. The actual use should be calculated according to the highest voltage of the selected equipment;

2.Single-phase Model List

Application

1. Railway, aviation, and navigation systems;

2. Precision testing of medical electronic equipment;

3. Power supply for imported electronic and electrical equipment;

4. Testing of exported electronic and electrical products;

5. CNC machine tools, light industry and textiles, and automated production lines;

6. High-performance uninterrupted power supply systems for generator plants.

Cases and Gallery

3phase-15KVA(input 480V60Hz  Output 380V50Hz)

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3phase-15KVA(input 380V50Hz  Output 200V60Hz)

3phase-20KVA(input 380V50Hz  Output 200V60Hz)

1phase-30KVA(input 220V50Hz  Output 110V60Hz)

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