VSA-H series switching power amplifier is designed with latest IGBT technique and MCU+DSP+FPGA framework to ensure high power availability and high safety. The single power module is designed as standard 8kVA output with large peak power margin. This feature allows VSA-H series power amplifier to be qualified in working with most kinds of electro-dynamic shakers. Different numbers of module can be combined as per requirement of actual power capacity, without replacing the rack. 

Advanced MCU+DSP+FPGA framework is used VSA-H series power amplifier with digital control to ensure high safety of each module and the whole system, to avoid collapse of whole system due to single module failure. VSA-H series power amplifier is also designed based on integrated logical unit, power unit and control unit, with obvious advantages of reliability, flexible configuration, energy saving, and easier maintenance.

Features

  • Standard 8kVA module, modulated and adaptive
  • Latest IGBT technique, with high withstand voltage and power
  • Sophisticated MCU+DSP+FPGA framework 
  • High efficiency D class power switching, 3-sigma peak current
  • Advanced digital loop control algorithms
  • Switching frequency up to 150kHz
  • Signal-to-noise ratio >65dB
  • Parallel operation current imbalance <1%
  • Energy efficiency ratio >93%
  • Dedicated and considerable Interlocks protections

Amplifier Model

VSA-H402A

VSA-H802A

VSA-H123A

VSA-H243A

VSA-H323A

VSA-H563A

Max. Output Power (kVA)

4

8

12

24

32

56

Number of Power Modules

1

1

2

3

4

7

Rated Output Voltage (Vrms)

120

120

120

120

120

120

Switching Frequency (Hz)

150k

150k

150k

150k

150k

150k

Harmonic Distortion (5-5000Hz)

≤0.8%

≤0.8%

≤0.8%

≤0.8%

≤0.8%

≤0.8%

Signal Noise Ratio (dB)

>65

>65

>65

>65

>65

>65

Frequency response (5-5000Hz)

±1.5dB

±1.5dB

±1.5dB

±1.5dB

±1.5dB

±1.5dB

Input Impedance(KΩ)

>10

>10

>10

>10

>10

>10

Output field voltage(VDC)

270

270

270

270

270

270

Amplifier Efficiency

>93%

>93%

>93%

>93%

>93%

>93%

Interlocks Protection

Input over/less voltage, Output over current/voltage, over travel/temperature, Oil pressure, Logic/module/cooling failure, etc.

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